Termite Mound Effects on Upland Rice Yields

Summary: Rice transplanted within 1 yard of a termite mound yields 19% more grain on average than rice grown 3 yards away.

Experimental Location: Koh Kong, Kingdom of Cambodia. 11 degrees 37 minutes 3 seconds North Latitude. 102 degrees 58 minutes 50 seconds East Longitude. Koh Kong is a port on the eastern edge of the Indian Ocean.

Climate: Koh Kong has a tropical monsoon climate. Elevation: 9.843 feet = 3 meters above sea level. Average yearly temperature: 80.33 degrees Fahrenheit = 23.68 degrees Centigrade. Monthly temperature range: 78 to 82 degrees Fahrenheit = 24.44 to 27.77 degrees Centigrade. Average yearly rainfall = 75.45 inches = 191.64 centimeters. The monsoon months are June through October (53 inches = 134 centimeters). The dry season is December through February (4 inches = 10 centimeters). The frost-free growing season = 365 days.

Geography: Koh Kong is one of the wildest and most inaccessible provinces in Cambodia. Roads into the Cardamom Mountains are few and poor. Villages are scattered with small populations. Most transportation is along the coast by ship. The Thailand border is about 6 miles north of Koh Kong city.

Agricultural Year: Nitrogen fixing cover crops like velvet bean (Mucuna utilis) can be sown as early as March, although few farmers practice modern agronomy. Rice is planted with the arrival of the monsoon in June. Early harvest starts in November, main harvest is in December, and late rice is gathered in January. Typically, only one crop is grown annually because of the difficulty of drying grain in rainy weather.

Soil Type: Soils on the coastal plain are porous and contain 40% to 60% sand. Soils in the hills are mostly highly weathered clays, low in nutrients and unsuitable for plowing or row crops.

Farm Management: On the coastal plain sow cover crops to add nitrogen and organic matter to the soil. In the mountains grow tree crops. Because of the warm climate and heavy rainfall, it is best to keep fields covered with live plants year-round. Sow orchards and plantations with perennial ground covers to control weeds and prevent erosion.

Experimental Design: 16 live termite colonies were selected for this trial. Rice growing within 1 yard of a termite mound was compared to an equal number of plants 3 yards away. Only 1 season (1955) of harvest data is available so results should not be considered definitive, merely suggestive. A ring 1-yard wide around a termite mound contains approximately 150 rice plants. These were harvested collectively and compared with 150 plants randomly sampled from a similar ring 3 yards away. For convenience, yields are expressed in pounds per acre based on a standard population of 130,680 plants per acre = 43,560 hills x 3 plants per hill. 871.2 is the conversion factor (871.2 x 150 plants = 130,680 plants per acre).

Field Size: Most local farmers grow just enough rice to feed their families. In a good year, a small surplus is available to market. Subsistence farms are small so rice fields usually range from 1 to 2.5 acres = 0.40 to 1 hectare.

Varieties: Local “land races” = unimproved farmers varieties range from 3 to 5 feet tall and yield 1/2 to 1 ton per acre with minimal care. Yields are low but reliable. Native strains have considerable resilience to environmental stress and broad tolerance of insects and diseases.

Termite Mounds: The average termite colony is approximately 9 feet in diameter and 4 1/2 to 5 feet tall. Distribution of live termite mounds averages about 1 per acre = 2 or 3 per hectare. Colony density increases along tree lines: Up to 14 or 15 per hectare = 5 or 6 per acre.

Termite Farming: Local farmers transplant rice seedlings around live termite colonies. Abandoned termite mounds are used to grow pumpkins, melons, and loofa = sponge gourds. Termites gather clay to build their mounds. Clay is ideal for strengthening sandy soils. Local farmers often “mine” dead mounds for their clay. This is hard work as termite clay is difficult to dig and crush into powder. Farmers broadcast termite clay on their fields as fertilizer. Application rates vary widely (1/2 to 1 ton per acre) depending on available mounds and the industry of farmers.

Industrial Uses for Termite Mounds: Termite clay is dense yet surprisingly soft and flexible. Craftsmen use mound clay to make terra cotta pots, tiles, and bricks. The unique properties of termite clay are probably due to the action of organic compounds in termite saliva. Chinese potters add rice flour to clay then ferment the mixture underground for 30 days before use. Chinese masons mix rice cooking water (which contains large amounts of starch) with slaked lime and sand to make mortar for repair of old buildings. These composite materials have improved strength and durability.

Rotation: Progressive farmers use 2-year rotations, alternating rice with some other crop, often beans. Most local farmers grow continuous rice with a short fallow of weeds between seasons.

Cultivation: Conventional fields are plowed before seeding. Plowing is shallow, typically not more than 6 inches deep.

Fertilizer: Average fields receive little or no fertilizer as manure is always in short supply. Good farmers apply a handful of composted manure to each hill when planting, about 3 or 4 scale ounces = approximately 5 tons per acre or about 50 to 65 pounds of nitrogen. Local soils are often deficient in phosphate. Adding small amounts of phosphorus (40 pounds per acre) can double rice harvests.

Rice Seedlings: Average transplants are 40 days old and 8 to 12 inches high with 4 or more leaves. The range in seedling age varies by farm and season. Most transplants are set between 35 and 45 days from seeding.

Spacing: Transplanting is done by women who judge distances by eye. Local custom is to set clumps or “hills” of 3 to 6 seedlings approximately 1 foot = 30 centimeters apart. Average clumps contain 4 or 5 seedlings.

Plant Density: Plant population varies widely by farm and field depending on who is doing the transplanting. Up to 20% of the seedlings die before harvest so average stands range from about 104,000 to 174,000 plants per acre. 139,000 is a good “middle” value. Rice compensates for plant density by producing more or less tillers. Thus, fields with hills spaced 8 inches = 20 centimeters apart can yield nearly the same amount of rice as fields with 15 inches = 38 centimeters spacing.

Weed Control: Local farmers pull weeds by hand or cultivate with hoes. Typical fields are cultivated 4 times, once every 10 to 14 days until rows close. When rice foliage covers the field, weeds are shaded and further hoeing is unnecessary.

Rule-of-Thumb: Under local conditions, every weeding increases rice yields 250 to 500 pounds per acre. If fields are well fertilized (22 tons of cow manure per acre = about 1 pound per square foot) each weeding can boost grain yield by 1,000 pounds per acre if shorter strains of rice are sown. (Native varieties tend to lodge = fall over if given too much nitrogen. Lodging risk increases with height so it is better to plant varieties that do not grow tall).

Agronomy Note: It is possible to control weeds without hoeing if cover crops like velvet bean (Mucuna utilis) are sown. Broadcast rice into flowering velvet beans then immediately cut vines at the soil surface. Rice grows through the decaying mulch. Rice sown into velvet beans yields 2 to 3 tons per acre without plowing, weeding, or fertilizer. Velvet beans fix 150 pounds of nitrogen per acre in 90 days from seeding. (Unfortunately, new ideas are hard to take root. Few local farmers grow cover crops).

Productivity: Typical harvests are small, only 1/2 to 1 ton per acre in most years. Yields tend to be lower on sandy soils and higher on heavier soils because clays contain more nutrients. Local varieties are adapted to produce modest but reliable yields under difficult conditions.

Irrigation: Local farmers rely on monsoon rains to water their crops. During the wet months it rains at least 1 hour daily, more than enough water to grow a good rice crop. Thus, irrigation is unnecessary and rice does not need flooding. This saves money as paddies require considerable labor to build and maintain. Upland rice is easier to grow than polder rice because farmers do not have to work in the mud.

Insecticides: No pesticides were used on experimental rice. Insecticides are not available and small farmers cannot afford agricultural chemicals. Local crops have wide tolerance or resistance to insects and diseases. Vegetation along field borders contain large populations of beneficial predators and parasites. Thus, pest outbreaks are rare and generally self-correcting.

Summary of Experimental Results

Field Rice Yield in Pounds per Acre

741

816

856

834

886

704

874

901

848

872

890

806

905

788

917

893

13,531 Total Weight / 16 termite mounds = 845.6875 pounds per acre.

Termite Mound Rice Yield in Pounds per Acre

904

1015

1103

1078

1175

899

1029

1050

991

978

1017

905

1036

889

1086

1040

16,195 Total Weight / 16 termite mounds = 1,012.1875 pounds per acre.

1,012 mound rice – 845 field rice = 167 difference

(Part / Whole) x 100 = Percent %

(167 part / 845 whole) = 0.1976331 x 100 = 19.76%

Rice grown around termite mounds has a 19% yield advantage.

Commentary: Soil near termite mounds is better than ordinary field soil. Thus, if you need to grow only a few crops, plant your garden within 1 yard of a termite mound.

There is no practical use for the results of this experiment other than the caution to leave termite colonies alone. The insects do no harm and the rice does not seem to mind.

Related Articles: Chemical to Organic Rice Conversion Trials, Trino, Italy 2014 – 2019; French Intensive Rice Agronomy 1930 – 1980; Garden Rice Trials, Paia, Hawaii 1924 – 2020; Intensive Rice Culture Primer; Paddy Rice Agronomy Trials, Trino, Italy 1853 – 1910; Ratoon Rice Trials, Paia, Hawaii 1877 – 1924; Rice and Gram Polyculture, Pondicherry, India 1763 – 1865; Rice Polder Trial, Butler, Pennsylvania 1972; Rice Rotation Trial, Puerto Limon, Costa Rica 1950 – 1973.

Would You Like to Know More? For more information about biological agriculture and rice farming please visit: http://www.worldagriculturesolutions.com — or — send your questions to: Eric Koperek, Editor, World Agriculture Solutions, 413 Cedar Drive, Moon Township, Pennsylvania 15108 United States of America — or — send an e-mail to: http://www.worldagriculturesolutions@gmailcom.

About the Author: Mr. Koperek is a plant breeder who farms in Pennsylvania during the summer and Florida over winter. (Growing 2 generations yearly speeds development of new varieties).

Index Terms: Rice (Oryza sativa japonica); Monsoon Rice; Termite Mounds; Upland Rice; Velvet Bean (Mucuna utilis).

Original Publication Date: February 1955, Koh Kong, Cambodia.

Update: June 2023, Homestead, Florida.

Author’s Note: WordPress is hostile to scientific and technical publishing. There is no way to align columns to make tables. There is no TAB key and the software is incompatible with Microsoft Word. I have complained repeatedly to the WordPress “Happiness Engineers” without result. I apologize for the klutzy numerical formatting but this is the best that I can do.

HISTORIC HUGELKULTUR

Translation: From the German: Hugel = mound or hill + Kultur = cultivation or culture

hugelkultur = mound cultivation or hill culture

Synonyms: Duotian (Chinese) = Pile Fields; Raised Beds; Raised Fields; Camellones (Spanish) = Ridges; Chinampas (Spanish) = Raised Fields; Monticulo (Spanish) = Mounds; Sukakollus (Aymara) = Raised Fields; Waru-Waru (Quechua) = Raised Fields.

Farm Technology: The basic principle is to pile up earth so water can drain and plants grow better. Chinampas, Sukakollus, and Waru-Waru are separated by shallow canals often the same width as the raised fields. Warm water protects crops from night frosts.

Agricultural Archeology: Raised field technology is at least 2,000 years old. Examples are found around the world: China, Southeast Asia, New Guinea, Africa, Mexico, Cuba, Central and South America. Ancient earthworks are often discovered by aerial photography, side-scan radar, and laser radar (LIDAR).

Historic versus Modern Hugelkultur: Historic hugelkultur has little in common with modern practice where logs and branches are covered with earth and deliberately left to rot. Ancient hugelultur is a technology used to farm swamps and marshes or any poorly drained ground:

“Where land is too wet to be plowed crops may still be grown. Cut logs and lay these upon the mire as in building a road. Hugel can be any length but it is convenient to measure them narrowly so that plants may be tended from both sides. Pile mud and peat upon the logs, one or two spades deep. The logs keep feet dry and help soil drain freely. Hugel are maintained by spreading mud and peat as need occasions. Peats are sour. Sprinkle ground charitably with ashes to sweeten the earth. Dress gardens in Autumn or after every crop. Cover earth with rushes and weeds or gather leaves from the forest. These rot and make vegetable manure as good as cow dung. Hugel are best used to grow root crops like beet, onion, radish, and turnip because these plants grow well in shallow soils. Up to six crops can be gathered if weather is favorable”. [Original document dated AD 1510 from the Codex Copernicus].

Historical Notes: In the 19th and earlier centuries country roads were “paved” with tree trunks = corduroy roads or thickly cut lumber = plank roads. These gave a rough ride but prevented horses and wagons from sinking into the mud. On well-maintained roads, sand or fine gravel was spread on top of the wood to make a smooth surface for less friction and more comfort. Many cities had streets paved with wood blocks as it was cheaper to cut trees than make bricks or quarry stone.

During the Renaissance and earlier ages, peasants had “customary rights” to gather anything they wanted from roadsides or forest floors. Live trees belonged to the landholders but anything on the ground was free for the taking. Cottagers and other “smallholders” cut weeds and raked leaves to fertilize their gardens. This was called “green manure”. Only wealthy farmers could afford to keep livestock and dung their fields.

Agronomy Notes: Planting in small hills or mounds is a closely related technology. Mounds warm earlier in Spring and cultivating widely spaced hills is much easier than digging and weeding entire fields. North American Indians used mounds to grow corn, beans, and squash. Corn stalks supported climbing bean vines. Beans fed nitrogen to corn and squash plants. Squash vines shaded the soil and helped control weeds.

Raised beds were common in middle age Europe, especially in areas with heavy clay soils that defied early wood plows. Much of northern Europe was glaciated so fields were often too rocky to plow. The solution was to plant on top of the ground. Root crops were sown in raised beds to avoid stones.

Related Articles: Hot versus Cold Composting; Upside Down Potatoes; Worm Farming.

Would You Like to Know More? For more information about Biological Agriculture and market gardening please visit: http://www.worldagriculturesolutions.com — or — send your questions to: Eric Koperek, Editor, World Agriculture Solutions, 413 Cedar Drive, Moon Township, Pennsylvania 15108 United States of America — or — send an e-mail to: http://www.worldagriculturesolutions@gmail.com.

About the Author: Mr. Koperek is a plant breeder who farms in Pennsylvania during the summer and Florida over winter. (Growing 2 generations yearly speeds development of new varieties).

Index Terms: Agricultural Archeology; Agricultural History; Agriculture in the Middle Ages; Agriculture in the Renaissance; American Indian Agriculture; Aymara Indian Agriculture; Aztec Indian Agriculture; Camellones = Ridges; Chinampas; Chinese Agriculture; Duotian = Pile Fields; Green Manures; Hill Culture; Hugel = Mound; Hugelkultur = Mound Culture; Hydraulic Agriculture; Inca Indian Agriculture; Mayan Indian Agriculture; Monticulo = Mounds; Mound Culture; Planting Hills; Planting Mounds; Raised Beds; Raised Fields; Soil Aeration; Soil Drainage; Sukakollus; Waru-Waru; Worm Farming.

Original Publication Date: November 1981 Evans City, Pennsylvania.

Update: June 2023 Homestead, Florida.

FRENCH INTENSIVE RICE AGRONOMY 1930 – 1980

Application of intensive gardening methods to rice fields increases grain yields substantially.

RICE RESENTS TRANSPLANTING

Bare Root Transplants Grown in Manure Compost (40 days from seeding): 3,122 pounds per acre

2-Inch Manure Cubes: 5,303 pounds per acre

5-Ounce Manure Pots: 6,089 pounds per acre

Direct Seeded Sprouted Rice: 7,620 pounds per acre

Transplant shock reduces yields. Pots are better than cubes for preventing root injury. Transplant seedlings directly first root shows on pot or cube. There is no advantage to delayed planting. Set transplants as soon as practical. Every day lost lowers grain yield. For best results plant pre-sprouted seeds.

RICE DISLIKES FLOODING

Paddy Rice (continuous flooding 8 inches deep): 2,884 pounds per acre

Upland Rice (sprinkler irrigated 28 inches): 4,400 pounds per acre

Rice tolerates flooding but does not thrive. For best yields keep fields moist but not wet. Roots need oxygen to absorb water and nutrients.

CULTIVATION HARMS RICE

Machine Cultivated 4 Times (every 14 days): 2,911 pounds per acre

Hand Weeded 4 Times (every 14 days): 3,460 pounds per acre

56-Day Flood 8 Inches Deep: 3,885 pounds per acre

Flame Weeded 4 Times (every 14 days): 4,336 pounds per acre

Dutch White Clover Living Mulch: 4,532 pounds per acre

Burlap Mulch 2 Bags = 4 Layers Thick: 5,617 pounds per acre

Chopped Weed Mulch 6 Inches Deep: 6,503 pounds per acre

Velvet Bean Mulch-In-Place: 6,924 pounds per acre

Any practice that disturbs soil ecology lowers crop yields. For best results do not plow, disk, harrow, or cultivate fields. Do not interfere with natural biological processes. Try to mimic nature whenever practical.

CROWDING LOWERS RICE YIELD

1 Pre-Sprouted Seed Per Hill: 6,887 pounds per acre

1 Transplant Per Hill: 4,143 pounds per acre

3 Transplants Per Hill: 3,681 pounds per acre

5 Transplants Per Hill: 2,343 pounds per acre

10 Transplants Per Hill: 2,616 pounds per acre

15 Transplants Per Hill: 2,569 pounds per acre

(12-inch equidistant spacing. 208 rows x 208 plants per row = 43,264 plants per acre. 40-day transplants from seeding).

Equidistant spacing increases crop yields by reducing plant competition for light and nutrients. Direct seeded crops usually outperform transplants. Transplant shock is not always immediately apparent; crops can be retarded 2 to 3 weeks which lowers yields.

IRRIGATION BOOSTS GRAIN YIELD

20 Inches Rainfall: 1,298 pounds per acre

Continuous Flooding 1 Inch Deep: 2,559 pounds per acre

20 Inches Rainfall + 8 Inches Irrigation at Grain Filling: 3,003 pounds per acre

Monsoon Rice (Exceeding 28 Inches without Flooding): 3,854 pounds per acre

Ridge & Furrow Irrigation (28 inches): 4,235 pounds per acre

Sheet Irrigation (28 inches) = No Standing Water: 4,870 pounds per acre

Sprinkler Irrigation (28 inches): 5,736 pounds per acre

Drip Irrigation (28 inches): 6,480 pounds per acre

Most agricultural soils do not have enough oxygen for optimum crop growth. Flooded fields yield poorly.

FERTILIZER INCREASES RICE YIELD

No Fertilizer (Rice After Fallow): 3,014 pounds per acre

Supplemental Phosphorus Only (40 pounds per acre): 3,949 pounds per acre

5-10-5 Broadcast (1 Ton Per Acre = 100 Pounds Nitrogen): 4,642 pounds per acre

Velvet Bean Mulch-In-Place (98 Pounds Nitrogen Per Acre): 5,220 pounds per acre

Composted Cow Manure (8 Tons Per Acre = 104 Pounds Nitrogen): 5,833 pounds per acre

Manure Lagoon Water (0.75 Acre-Inch = 20,000 Gallons = 100 Lb Nitrogen / Acre): 6,750 pounds per acre

Small amounts of nutrients can double yields. Prefer biological fertilizers whenever practical.

RICE PREFERS DEEP SOILS

4 Inches of Topsoil over Granite: 1,338 pounds per acre

8 Inches of Topsoil over Granite: 1,734 pounds per acre

12 Inches of Topsoil over Granite: 2,223 pounds per acre

18-Inch Raised Bed: 3,446 pounds per acre

24-Inch Raised Bed: 4,580 pounds per acre

36-Inch Terrace: 4,965 pounds per acre

Crop yield is directly related to soil volume. More roots = more water and nutrients = bigger harvests. Manage fields to increase soil depth and eliminate compaction. Rule-of-Thumb: 5% yield loss for every 1-inch decrease in topsoil depth. 2.25% yield loss for every 1-inch decrease in subsoil depth. This rule applies to most seed crops.

SEED INOCULATION RAISES GRAIN YIELDS

Pre-Sprouted Upland Rice without Beneficial Microbes: 2,622 pounds per acre

Upland Rice Seed Soaked 24 Hours in Fresh Cow Manure Tea (1 dung : 1 water by weight): 3,361 pounds per acre. Use FRESH manure only. Do not use dried or composted dung.

Upland Rice Seed Soaked 24 Hours in Compost Tea (1 compost : 1 water by weight): 3,638 pounds per acre. Use only low temperature, aerobic, fungal dominant compost.

Rice grows better with symbiotic fungi and bacteria. Fungi provide water and minerals to rice. Bacteria fix nitrogen. Active soil biology replaces synthetic chemicals.

SOIL AERATION INCREASES RICE YIELD

16 Inches Topsoil: 2,809 pounds per acre

Subsoil Tillage 16 Inches Deep (0.75-inch wide slit every foot): 3,711 pounds per acre

16 Inches Potting Soil (1 topsoil + 1 coarse sand + 1 peat = 3 parts by volume): 4,261 pounds per acre

16 Inches Topsoil over 4-Inch Diameter Forced Air Ducts Every 2 Feet Apart (220 cubic feet per minute): 5,369 pounds per acre

16 Inches Composted Hardwood Bark: 6,546 pounds per acre

For highest yields manage fields to increase soil porosity. Healthy soils need to breathe. Roots need air to absorb water and nutrients. More oxygen = bigger harvests.

HISTORICAL NOTE: Yield data come from numerous unrelated experiments conducted at many diverse sites over 5 decades, 1930 to 1980. Results are not definitive (absolute) but rather suggestive. The trends are more important than the numbers. For example: Flooded rice generally yields less than sheet irrigated rice (alternate wetting and drying) which usually produces lower yields than sprinkler irrigated rice. These results typically hold true regardless of variety, cultural methods, or environmental conditions. Experimental data vary but the underlying principle does not: Soil aeration increases grain yields. More oxygen = more rice.

This article was written before development of the modern System of Intensive Rice Cultivation. Consequently, the importance of transplanting 10 to 12-day old seedlings was unknown to the Author. 2-leaf transplants develop many tillers which greatly increase rice yields. Equidistant spacing of young transplants is the foundation of intensive rice agronomy.

DEDICATION: This article is dedicated to Father Henri de Laulanie de Sainte-Croix, S.J., who taught me that humility precedes learning. This is not an easy lesson to master. Friar Laulanie (1920 – 1995) was the inventor of intensive rice cultivation = Systeme de Riziculture Intensive (SRI). I had the privilege of working with Friar Laulanie while he developed his new rice agronomy. My interest was in mechanized plantation agriculture while Father Laulanie was the champion of small field subsistence farmers. Consequently, we often approached problems from entirely different directions. I miss our lively correspondence and, especially, our friendly debates, most of which I lost. There is nothing quite like the experience of being steam rolled by the relentless logic of a Jesuit mind.

RELATED PUBLICATIONS: Chemical to Organic Rice Conversion Trials, Trino, Italy 2014 – 2019; Garden Rice Trials, Paia, Hawaii 1924 – 2020; Intensive Rice Culture Primer; Paddy Rice Agronomy Trials, Trino, Italy 1853 – 1910; Ratoon Rice Trials, Paia, Hawaii 1877 – 1924; Rice and Gram Polyculture, Pondicherry, India 1763 – 1865; Rice Polder Trial, Butler, Pennsylvania 1972; Rice Rotation Trial, Puerto Limon, Costa Rica 1950 – 1973; Termite Mound Effects on Upland Rice Yields, Koh Kong, Cambodia 1955.

OTHER ARTICLES OF INTEREST: Wheat Agronomy Trials 2016 – 2020; Red Fife Winter Wheat Trials 1990 – 2009; Stomp Seeded Winter Barley Trials 2008 – 2017; Yield of Small Grains Surface Seeded into Standing Dutch White Clover; Maize and Kidney Bean Polyculture; No-Till Nankeen Cotton in Mulch-In-Place Palmer Amaranth; Growth Stimulation of Pea Nodules by Companion Oats; Oat, Pea, and Turnip Polyculture Trial; Hand Cultivated Maize versus Mexican Sunflower Mulch-In-Place; Upland versus Wadi Barley Cultivation in Morocco; Yield of Forest Rye Grown on Quarry Sand Terraces; Maize Polyculture Trial 2007 – 2016.

WOULD YOU LIKE TO KNOW MORE? For more information on biological agriculture and intensive grain farming please visit: http://www.worldagriculturesolutions.com — or — mail your questions to: Eric Koperek, Editor, World Agriculture Solutions, 413 Cedar Drive, Moon Township, Pennsylvania 15108 United States of America — or — send an e-mail to: worldagriculturesolutions@gmail.com.

Cornell University hosts a comprehensive SRI website at: http://www.sririce.org. E-Mail Address: sririce@cornell.edu.

The original SRI papers by Friar Laulanie are available both online and in the scientific journal Tropicultura: Technical Presentation of the System of Rice Intensification, Based on Katayama’s Tillering Model. Henri de Laulanie. 1993 Tropicultura 13 : 1. Intensive Rice Farming in Madagascar. Henri de Laulanie. 2011 Tropicultura 29 : 3 (183 – 198).

For more information on French Intensive Gardening read this classic work: Manuel Pratique de la Culture Maraichere de Paris. J.G. Moreau. 1845 Alex Richards, Paris. Reprinted in 2010 by Nabu Press. International Standard Book Number (ISBN): 978 114 387 662 2.

ABOUT THE AUTHOR: Mr. Koperek is a plant breeder who farms in Pennsylvania during Summer and Florida over Winter. (Growing 2 generations yearly speeds development of new crop varieties).

INDEX TERMS: 5-10-5 (chemical fertilizer); Aerobic Compost; African Rice; Alternate Wetting and Drying (irrigation); Asian Rice; Beneficial Bacteria; Beneficial Microbes; Burlap Mulch; California Rice Farming; Compost Tea; Composted Hardwood Bark; Cover Crops; Cow Manure Compost; Direct Seeding; Drip Irrigation; Equidistant Spacing; Flame Weeding; Flood Irrigation; French Intensive Gardening; Fungal Dominant Compost; Hand Weeding; Henri de Laulanie (agronomist); Hills (for planting); Indian Rice; Intensive Rice Agronomy; Intensive Rice Culture; Intensive Rice Farming; Intensive Rice Growing; Japanese Rice; Lowland Rice; Low Temperature Compost; Manure Cubes; Manure Lagoon Water; Manure Pots; Manure Tea; Monsoon Rice; Mucuna utilis; Mulching; Mulch-In-Place; Nitrogen Fixing Bacteria; Organic Fertilizers; Organic Rice Farming; Oriental Rice; Oryza glaberrima; Oryza sativa indica; Oryza sativa japonica; Paddy Rice Cultivation; Phosphorus (fertilizer); Plant Density; Pre-Sprouting Seeds; Rice Tillering; Ridge and Furrow Irrigation; Seed Inoculation; Seed Priming; Sheet Irrigation; Sistema Intensivo de Cultivo Arrocero; Soil Aeration; Soil Depth; Soil Porosity; Sprinkler Irrigation; Subsoil Tillage; Symbiotic Fungi; System of Rice Intensification; Systeme de Riziculture Intensive; Transplanting; Upland Rice; Velvet Bean; Weed Control; West African Rice.

ORIGINAL PUBLICATION DATE: November 1981, Lime House, Dominica

UPDATE: July 2023, Homestead, Florida

WILDCRAFTED POTATOES

It is not enough to be “organic”. Now, shoppers want wildcrafted. This is as wild as it gets:

Wait until late Fall or early Winter when air and soil temperatures are reliably cold but the ground is not yet frozen. This is called dormant planting = most everything is asleep waiting for Spring.

Fall planted potatoes yield more than Spring planted potatoes. Dormant planted potatoes sprout very early in Spring and make most of their growth when weather is cool and wet. This provides considerable protection from drought and avoids most competition from weeds.

Choose the weediest field you can find. Broadleaf weeds 5 to 6 feet tall are ideal but use whatever is available. If you cannot plant in Autumn, wait patiently for Spring weeds to grow shoulder to head high. In Pennsylvania, potatoes can be planted the first or second week of July for harvest in late October or early November.

Mow the weeds and save the cuttings for mulch. On large farms use a forage harvester to deposit chopped weeds into convenient windrows for planting. Alternatively, use a hay baler. Weeds for mulch can be baled wet. Cut only weeds needed for mulch. Leave all other weeds standing. Weeds feed and protect soil.

Plant whole seed potatoes the size of an egg (2 to 3 ounces). Do not use cut or damaged potatoes as these will rot. Plant a mixture of colors and varieties to increase biodiversity. Multiple species protect crop from insects and diseases.

Do not apply fungicides or insecticides to tubers or vines. No chemicals are necessary for wildcrafted potatoes. Control pests and diseases with 7-year rotations. Always plant potatoes on fresh ground.

Dig planting holes 5 to 8 inches deep. A bulb planter works great for this task or use a no-till planter.

Space plants widely to avoid water competition = 3 feet x 3 feet apart = 4,840 plants per acre. Alternate rows of potatoes with rows of weeds. Adjust weed row width to match your equipment. Weeds regrow in Spring and protect potato plants from bugs.

Fill holes with dirt then cover with 8 inches of weed mulch = about 2 bushels = 18 gallons. Make a circle of mulch at least 2 feet in diameter. Mulch protects young potato plants until vines start running. When plants are established vines sprawl over everything around them and even climb nearby weeds.

No fertilizer is needed for wildcrafted potatoes. Weeds bring nutrients up from the subsoil to feed potato plants.

Irrigate if practical or just let nature take its course. Neighboring weeds provide potatoes some drought protection. Weeds make light shade and block drying winds. This raises humidity around potato vines. Potato roots also follow weed roots deep into moist subsoil.

There is nothing more to do until harvest. Wait until vines are completely dead before digging tubers with a garden fork, potato plow, or potato harvester.

My 2022 wildcrafted potato harvest averaged 2 pounds 4.5 ounces per plant. This yield did not win any prizes at the Butler County Fair, but I do not care about ribbons. Wildcrafted potatoes are selling for $1.00 per pound, and I have $10,000 worth of spuds in the barn.

RELATED ARTICLES: Crops in the Weeds; Living Mulches for Weed Control; Managing Weeds as Cover Crops; Upside Down Potatoes; Trash Farming; and Weed Seed Meal Fertilizer.

WOULD YOU LIKE TO KNOW MORE? For more information on biological agriculture and farming in the weeds, please visit: http://www.worldagriculturesolutions.com — or — send an e-mail to: worldagriculturesolutions@gmail.com — or — post your questions to: Eric Koperek, Editor, World Agriculture Solutions, 413 Cedar Drive, Moon Township, Pennsylvania, 15108 United States of America.

ABOUT THE AUTHOR: Mr. Koperek is a plant breeder who farms in Pennsylvania during Summer and Florida over Winter. (Growing 2 generations yearly speeds development of new varieties).

INDEX TERMS: Bio-Drills; Biological Agriculture; Biological Insect Control; Bio-Pumps; Cover Crops; Mulching; Nurse Crops; Organic Farming; Potato (Solanum tuberosum); Weeds as Bio-Drills; Weeds as Fertilizer; Weeds as Mulch; Weed Farming; Wildcrafting; Windbreaks.

PUBLICATION DATE: January 2023, Evans City, Pennsylvania.

CROP ROTATION PRIMER

Problem:     Growing the same crop in the same field year after year weakens the soil and promotes harmful insects and diseases.

Solution:     Plant a different crop each year.  Alternating unrelated species allows soil to rest and breaks reproduction cycles of diseases and pests.

Example:     Rather than sowing Wheat — Wheat — Wheat, grow Red Clover — Potatoes — Wheat.

Rotation Science:     Each species roots at different depth and takes varying amounts of minerals.  Rotating crops gives soil time to replenish these nutrients.  Every variety has its own cast of villainous insects and debilitating diseases.  Alternating different plants each season starves harmful organisms by denying them hosts on which to feed.

How To Do It:     Following is a list of strict rotation rules.  Obey these instructions and your crops will thrive.  Ignore the rules and you will spend unpleasant sums for costly pesticides, nematicides, and fungicides.

Rule-Of-Thumb:     Never follow a crop with a similar or botanically related species.  Thus:

Rule:     Never follow a grain crop with a grain crop.  Examples:  Oats & Wheat.  Maize & Barley.  Note:  This rule applies to all true cereals = grass crops.

Rule:     Never follow a leaf crop with a leaf crop.  Examples:  Spinach & Lettuce.  Cabbage & Chard.

Corollary:     Never follow a broad leaf plant with a broad leaf plant if there is a better alternative.  Example:  Sunflower & Collards.  Sunflower & Millet is a better choice (broad leaf plant followed by a narrow leaf = grass plant).  This rule is not always easy to follow but keep it in mind especially if nematodes are a problem.  Grasses suppress most nematodes.

Good Practice:     Rotate nematode resistant crops where these parasites cause economic losses:  Asparagus, Arugula, Barley, Broccoli, Cabbage, Castor Bean, Collards, Cowpea, Crimson Clover, Grasses (Poaceae), Hairy Vetch (winter vetch), Jack Bean, Joint Vetch, Kale, Lupine, Maize (corn), Marigold (Tagetes species), Millet, Mustard Greens, Mustard Seed, Oats, Partridge Pea, Rapeseed (canola), Rice, Rye, Sesame, Showy Crotalaria, Sorghum, Sudan Grass, Sunn Hemp, Velvet Bean, Wheat.

Rule:     Never follow a root crop with a root crop.  Examples:  Carrots & Potatoes.  Onions & Sugar Beets.  Note:  All roots, tubers, corms, and bulbs are called “root crops”.

Rule:     Never follow a fruit crop with a fruit crop.  Examples:  Tomatoes & Peppers.  Watermelons & Gourds.  Cucumbers & Eggplants.

Rule:     Never follow a seed crop with a seed crop.  Examples:  Buckwheat & Sesame.  Caraway & Fennel.  Note:  “Seed Crops” include “pseudo-cereals” (Quinoa & Amaranth) and “Oil Seeds” (Safflower, Flax, Sunflower).

Rule:     Never follow a flower crop with a flower crop.  Examples:  Poppies & Zinnias.  Marigolds & Nasturtiums.

Rule:     Never follow a vine crop with a vine crop.  Examples:  Gourds & Pumpkins.  Cucumbers & Squash.  Note:  Some rotation rules overlap.  This repetition is deliberate.  Gourds, pumpkins, squash, and cucumbers are fruit crops, vine crops, and in the same botanical family = 3 reasons not to follow these crops in close rotation.

Rule:     Never follow crops sharing common diseases or insect pests.  Example:  Tomatoes & Watermelons are both susceptible to anthracnose.

Rule-Of-Thumb:     Highly aromatic plants = herbs “cleanse” the soil.  Examples:  Basil, Oregano, Sage, and Thyme.  This rule dates back to the Middle Ages and is especially useful for market gardens and other small spaces.  If you cannot think of a better rotation follow cash crops with herbs or strongly scented flowers like Marigolds.

Rule:     Alternate legumes with cash crops whenever practical.  Examples:  Red Clover & Sweet Corn.  Crimson Clover & Cabbage.  Frost Beans & Green Peppers.  Why buy costly synthetic fertilizer when you can grow nitrogen-fixing legumes?  Let nature pay your fertilizer bills!

Corollary:     Plant legumes with cash crops whenever practical.  Growing 2 or more species together is called polyculture.  Examples:  Pumpkins & Dutch White Clover.  Barley & Chickling Vetch.  Sweet Corn & Pinto Beans.  Cotton & Crimson Clover.  Potatoes & Frost Beans.  Seed multiple species in the same row, in alternate rows, or broadcast together.  For best results use short or non-climbing legumes that will not interfere with harvesting equipment.

Rule:     Use 7-year rotations whenever practical.  Example:  Flax — Sweet Clover — Wheat — Lentils — Rapeseed (canola) — Pinto Beans — Sunflower.  Long rotations are essential to control insects and disease organisms that live in the soil.

Rule:     Alternate cash crops with forage crops whenever practical.  Examples:  Safflower — Winter Rye & Winter Vetch & Forage Turnips.  Winter Barley & Austrian Winter Peas & Tillage Radish — Sunflower.  Forage Maize & Velvet Bean — fall Broccoli or other cabbage family crops.

Good Practice:     German farmers have a long history of planting “Landsberger Gemenge” = Hill Mixture = Mountain Mixture = Waste Land Mixture = multi-species forage crops sown on land unsuitable for plowing.  Typical mixes include 1 cereal or grass + 2 legumes + 1 cabbage family plant or root crop.  For example:  Winter Rye + Red Clover + Winter Vetch + Forage Kale or Turnips.  This combination of cereal, legume, forb, and root crops makes a balanced diet ideal for grazing animals.  Cattle gain 2.5 to 3.5 pounds daily when feeding on forage mixtures of 4 or 5 species.

Historical Note:     Farmers in the Middle Ages planted “The Twelve Apostles” = a mixed species forage crop with 4 grains + 4 legumes + 4 root or broad leaf crops.

Rule:     Practice sabbatical rotation whenever possible:  Let fields rest every seventh year.  Grow weeds or multiple species cover crops to restore soil structure and fertility.  Example:  Caraway Seed — Red Clover — Sunflower — Berseem Clover — Winter Rye — Soy Beans — Mixed Grass & Alfalfa Hay Crop.

Rule:     Grow crops in narrow strips rather than large fields.  Plant adjacent strips with unrelated species.  Adjust strip widths to fit planting and harvesting machinery.  For best results strips should not exceed 200 feet wide on flat land or 50 feet wide on hills or slopes.  Example:  4 rows of Sweet Corn — 4 rows of Snap Beans — 4 rows of Sunflower — 4 rows of Sweet Potatoes . . . .  Note how tall crops alternate with short crops.  This increases light penetration into the canopy and greatly reduces pest populations.

Rule:     Plant cash crops with companion plants whenever practical.  Use short cover crops that will not compete with taller cash crops.  Example:  Oats & Forage Peas & Turnips.  Harvest oats with a “stripper header” then graze peas & turnips.  Historical Note:  Farmers in the Middle Ages grew polycrops called The Holy Trinity = 1 cereal grain + 1 legume + 1 root crop.

Rule:     Include multiple species cover crops in farm rotations whenever practical.  Use multi-species cover crops just like legume cover crops.  Mixed species cover crops and legumes can be freely substituted in any crop rotation.  Growing multiple species cover crops is the best way to improve soil tilth and increase soil organic matter.

Good Practice:     Experience has shown that mixed species cover crops effectively control pests and diseases.  However, it is best to be cautious.  Thus, a corn and soybean farmer should not include either maize or soy in his cover crops.  This principle applies to all cash and cover crops.

Rule-Of-Thumb:     Mixtures of plants grow better than isolated species.  full synergistic effects require at least 8 cover crop species.  There is a certain minimum number of species that must be present before soil biology reaches maximum activity.  this “tipping point” appears to vary depending on location and plant varieties.  Some farmers include 30 species in their cover crop mixes.

Generic Cover Crop Mixture:     2 warm season grasses + 2 warm season legumes + 2 warm season broad leaf plants + 2 cool season grasses + 2 cool season legumes + 2 cool season broad leaf plants + 2 or more root crops = 14 or more species cover crop mix.  Broadcast not less than 20 pounds per acre or drill in 2-inch deep furrows spaced 7.5 inches apart.

Rule-Of-Thumb:     Include 50% legumes by weight in mixed species cover crops to provide sufficient nitrogen for following cash crop.

Science Note:     Cover crops containing many species can fix substantial amounts of nitrogen even if few or no legumes are present.  Agronomists speculate that this nitrogen comes from free-living soil bacteria.  Also, symbiotic bacteria fix more nitrogen when mixtures of legumes are grown with plants that do not fix nitrogen.  Maximum synergistic effects are noted in cover crops with 20 or more species.  Ideal number of species is not known.

Rule:     Reserve 5% to 10% of farmland for native weeds.  Grow weeds around fields and in narrow strips between cash crops.  Sow weeds in vineyards and orchards.  Mow weeds only when necessary = at harvest.  Example:  Obtain weed seeds = screenings from local grain elevators.  Sow wherever soil is bare.  Bale weedy fields.  Spread bales of “wildflower hay” wherever soils are weak or pests prolific.  Native weeds are essential to provide food, shelter, and alternate hosts for beneficial insects.  Biological pest control is not effective without native wees growing in close proximity to crops needing protection.

Rule:     Tolerate weeds in cash crops provided density does not exceed 2,500 to 5,000 weeds per acre = approximately 1 weed every 3 or 4 feet equidistantly.  Thin weeds as necessary to protect cash crops from excess competition.  Weeds provide food, shelter, and alternate hosts for predatory and parasitical insects.  Example:  Let weeds grow inside and around tomato fields.  Result:  Save $400 per acre on insecticide costs.

Rule:     For biological pest control, plant cash crops adjacent to native weeds and other plants with small flowers.  More weeds = more flowers = fewer pests = less crop damage.  Rule-Of-Thumb:  If you have a pest problem it means you do not have enough flowers.  Examples:  Plant wildflowers in your vineyard or buckwheat, hairy vetch, and turnips in your orchard.

Rule:     Reserve 5% to 10% of farmland for hedgerows, windbreaks, and wood lots.  For high biodiversity plant not less than 40 species per acre or linear mile.  for best results choose economic species that produce nuts, fruits, berries or other cash crops.  Rule-Of-Thumb:  Everything on a farm should produce income.  Example:  Wildflowers can be harvested for seed or rented to local bee keepers.

Rule:     Break any rule rather than do something stupid.  Rotation rules are based on centuries of practical experience.  Thus, think deeply before trying anything risky.  For example:  Crop rotation can be difficult or inconvenient in small spaces or market gardens.  Solution:  Compromise where needed and apply lots of compost = at least 1 inch deep = 1 pound per square foot.  Soils of high biological activity have strong resistance to pests and diseases.  Rule-Of-Thumb:  Plants with Brix readings above 12% dissolved solids are generally immune to most insects and pathogens.  High Brix levels are directly related to soil organic matter content.  Translation:  More compost = healthier plants = crop rotation is not always necessary all of the time.

Plant Families:     Following is a list of the top 10 botanical families most important to farmers and gardeners.  Use listed species to plan effective crop rotations.

Beet Family = “Chenopods” = Chenopodiaceae:     Amaranth, Beet, Lamb’s Quarters, Mangel-Wurzel (stock beet = forage beet), Spinach, Sugar Beet, Swiss Chard, Quinoa, Redroot Pigweed.

Cabbage Family = “Crucifers” = “Brassicas” = Cruciferae = Brassicaceae:     Arugula, Brussels Sprouts, Broccoli, Cabbage, Chinese Cabbage (bok choy), Cauliflower, Collards, Garden Cress, Horseradish, Kale, Kohlrabi, Mustard (greens), Mustard (seed), Nasturtiums, Radish, Rapeseed (canola), Rapini, Rutabaga, Turnip, Water Cress, Woad (blue dye plant).

Agronomy Note:  Brassicas and Chenopods are good pioneer plants because they do not need mycorrhizal fungi in order to thrive.  Caution:  Do not plant Brassicas or Chenopods if you are trying to encourage beneficial fungi.  Brassicas and Chenopods will not feed mycorrhizal fungi.

Carrot Family = Apiaceae = Umbelliferae:     All plants in the Carrot Family have umbels = umbrella-like flowers composed of hundreds of tiny florets.  Small flowers are ideal “bee forage”:  Angelica, Anise, Caraway, Carrot, Celeriac, Celery, Chervil, Cilantro, Coriander, Cumin, Dill, Fennel, Lovage, Parsley, Parsnip, Wild Carrot (Queen Anne’s Lace).

Cucumber Family = “Cucurbits” = Cucurbitaceae:     Cantaloupe (melon), Cucumber, Cushaw (squash), Gourd, Honeydew (melon), Luffa (sponge), Muskmelon, Pumpkin, Squash (summer, winter, & spaghetti), Watermelon, Zucchini.

Daisy Family = Aster Family = Asteraceae = Compositae:     Artichoke, Calendula, Chamomile, Chicory, dandelion, Endive, Escarole, Everlasting (helichrysum), Lettuce, Marigold, Raddichio, Sunflower, Tansy, Tarragon, Wormwood, Yarrow.

Grain Family = Cereal Family = Grass Family = Gramineae = Poaceae:     Barley, Corn (maize), Durum (wheat) = Semolina = Kamut, Einkorn (wheat), Emmer (wheat), Fonio, Millet, Oat, Rice, Rye, Sorghum, Spelt (wheat), Teff, Triticale (rye x wheat hybrid), Wheat, Wild Rice.  Pseudo-Cereals are not grass plants but are grown and eaten like true grains:  Amaranth, buckwheat, Chia, and Quinoa.

Legume Family = Fabaceae = Leguminosae:     Any plant that has seeds in pods is called a legume.  All legumes fix nitrogen and can be grown as “green manure crops”:     Alfalfa (lucerne), Beans, Carob Tree, Chickpeas (garbanzo beans), Clovers, Cowpea, Castor Bean, Fenugreek, Hairy Indigo, honey Locust Tree, Jack Bean, Lentils, Lespedeza, Lupine, Partridge Pea, Peas, showy Crotalaria, Sunn Hemp, Vetches (tares).  Legumes grown for dry, edible seeds are called “pulses” or “pulse crops”.

Mint Family = Lamiaceae = Labiatae:     Basil, Bee Balm, Bergamot, Calamint, Catnip, Hyssop, Lavender, Lemon Balm, Marjoram, Mint, Oregano, Pachouli, Rosemary, Sage, Savory, Thyme.

Onion Family = Lily Family = “Alliums” = Alliaceae = Liliaceae:     Asparagus, Chives, Garlic, Hyacinth, Leeks, Lilies, Onions, Ramps, Scallions, Shallots.

Tomato Family = Solanaceae:     Eggplant, Peppers, Petunias, Potatoes, Tobacco, Tomatoes, Tomatillos.

Related Publications:     Clifton Park System; Biblical Agronomy; The Twelve Apostles; Biological Agriculture in Temperate Climates; Polyculture Primer; Strip Cropping Primer; Worm Farming; Managing Weeds as Cover Crops; Earthworm Primer; Planting Maize with Living Mulches; Living Mulches for Weed Control; Crops Among the Weeds; The Edge Effect; Organic Herbicides; Forage Maize for Soil Improvement; Coppicing Primer; Forage Radish Primer; Weed Seed Meal Fertilizer; Intensive Rice Culture Primer; Trash Farming; Pelleted Seed Primer; Upside Down Potatoes; Maize Polyculture Trial 2007 – 2016; No-Till Hungarian Stock Squash; and the Rototiller Primer.

Would You Like To Know More?     For more information on crop rotation and Biological Agriculture please visit:  http://www.worldagriculturesolutions.com  — or —  send your questions to:  Eric Koperek, Editor, World Agriculture Solutions, 413 Cedar Drive, Moon Township, Pennsylvania, 15108 USA.

About The Author:     Mr. Koperek is a plant breeder who farms in Pennsylvania during summer and Florida over winter.  (Growing 2 generations yearly speeds development of new crop varieties).

Index Terms:     Biological Pest Control; Brix Levels (in crops); Companion Planting; Compost; Cover Crops; Crop Rotation; Holy Trinity (grain + legume + root crop polyculture); Landsberger Gemenge (mixed species forage crop); Mixed Species cover Crops; Multi-Species Cover Crops; Multiple Species Cover Crops; Polycrop; Polyculture; Sabbatical Rotation (fallow fields every 7th year); Strip Cropping; Stripper Header; Twelve Apostles (12 species forage crop mix); Weed Management; Wildflower Hay; and Wildflowers.

BIBLICAL AGRONOMY

“Plant a garden and you work hand in hand with God”.

What Is It?     “Biblical Agronomy” is a philosophy of agriculture, a system of farming based on the Christian bible and practices of the early Catholic Church.  Over time these precepts have evolved into a new way of thinking, a unique form of Biological Agriculture.

How To Do It:     Following are Bible passages with agricultural commentaries to help farmers apply biblical principles in a modern world:

“Thou shalt not kill”.  Exodus 20 : 1 – 17.   Editor’s Note:  This injunction from the “Ten Commandments” is the first principle of Biblical Agronomy and the hardest concept for most farmers to practice.  Modern industrial agriculture is largely negative.  It proceeds from the assumption that nature must be subdued.  Soils must be plowed.  Weeds must be eradicated.  Insects must be exterminated.  Farmers spend much of their time spraying deadly chemicals:  Herbicides, insecticides, fungicides — a laundry list of toxins.  Conventional agriculture is all about killing things.  Biblical agronomy takes the opposite approach:  Agriculture is about life, not death.  Farmers concentrate on genesis = creating life.  Biology replaces chemicals.  Earthworms replace plows.  Plants replace petroleum.  “Let nature do the heavy lifting”.  The principle distinction between Biblical Agronomy and conventional agriculture is that when problems arise farmers ask:  “How do I solve this without killing anything?”

“Speak to the earth, and it shall teach thee”.  Job 12 : 8.  Editor’s Note:  Successful farmers copy nature in their fields.  Two thousand years ago Roman farmers practiced “Cultura Promiscua” = companion planting:  Olives, pomegranates, figs, grapes, cereals, legumes, and vegetables were grown together on small, 5-acre farms worked by hand.  Today, we call this “agroforestry”.  Back then, it was practical husbandry.  Planting mixtures of crops without plowing was the easiest way to maintain soil fertility and prevent erosion.  Native fields and forests have no bare ground.  The earth is constantly covered with mixtures of plants.  Observe nature closely then copy what you see.

“If you enter your neighbor’s grain field, you may pick kernels with your hands, but you must not put a sickle to  his standing grain”.  Deuteronomy 23 : 25.  Editor’s Note:  The poor have the right to eat from your fields but not the right to harvest for profit.  Over the centuries this rule has evolved into the practice of leaving some part of a field unharvested so beneficial insects and wildlife have something to eat.  Modern custom is to reserve 5% to 10% of crops for “Nature’s Pantry”.  The alternative is buying costly insecticides.

“If you enter your neighbor’s vineyard, you may eat all the grapes you want, but do not put any in your basket”.  Deuteronomy 23 : 24.  Editor’s Note:  Eat your fill but do not carry any away.  Hospitality to all in need was official Church doctrine during the Middle Ages.  The right of the hungry to eat from the fields was part of the social safety net for the poor.  This practice was later codified in various “laws of hospitality”.  Modern farmers plant hedgerows and “insectary crops” to feed beneficial wildlife.  Biologically managed vineyards are sown with legumes and wildflowers.  Flowers replace insecticides.

“Do not plant two kinds of seed in your vineyard; if you do, not only the crops you plant but also the fruit of the vineyard will be defiled”.  Deuteronomy 22 : 9.  Editor’s Note:  Modern agronomists interpret this rule as a general injunction against mixing varieties of the same open pollinated species.  Isolation distances must be preserved to prevent cross-pollination so varieties remain pure.  (This rule does not apply to self-pollinated species because out-crossing rarely occurs).

“Isaac planted crops in that land and the same year reaped a hundredfold, because the Lord blessed him.”  Genesis 26 : 12.  Editor’s Note:  Historical seed to harvest ratios of 1 : 100 are not inconceivable.  Roman farmers routinely harvested 40 bushels of wheat per acre.  80-bushel yields were common when irrigated grain followed nitrogen-fixing cover crops of lentils, lupines, clover, or vetch.  Modern wheat varieties regularly produce 100-bushel yields.  The keys to bumper grain crops are no tillage, live soils, wide spacing of individual plants, living mulches to control weeds, companion plants to increase biodiversity, and irrigation to prevent water competition between grain and cover crops.  Farmers in the Middle Ages planted the “Holy Trinity” = 1 grain + 1 legume + 1 root crop.  For example:  Wheat, clover, and turnips.  Seeded at 50 pounds of wheat per acre, this polycrop easily yields 3,000 pounds (50 bushels) per acre = 1 : 60 seed to harvest ratio.

“But the seed falling on good soil refers to someone who hears the word and understands it.  This is the one who produces a crop, yielding a hundred, sixty, or thirty times what was sown.”  Matthew 13 : 33.  Editor’s Note:  Plant most any heritage variety of winter wheat in your garden, for example, Red Fife.  Space plants 1 foot apart equidistantly.  Mulch the ground and water as needed.  Each plant will yield 1 1/2 to 2 1/2 ounces of grain on average = approximately 1,305 to 2,175 seeds per plant = 68 to 113 bushels per acre.  You do not need “improved” or “hybrid” varieties to obtain high yields.  Good growing conditions are the most important factors.

“When you are harvesting in your field and you overlook a sheaf, do not go back to get it.  Leave it for the foreigner, the fatherless and the widow, so that the Lord your God may bless you in all the work of your hands”.  Deuteronomy 24 : 19.  Editor’s Note:  Modern farmers plant wildlife food plots or leave border rows unharvested.  Biological agriculture practice requires that farms be managed as ecosystems rather than individual fields.  The idea is to encourage large populations of many beneficial species.  More biodiversity = healthy ecology = better plant growth = higher yields.

“Do not go over your vineyard a second time or pick up the grapes that have fallen.  Leave them for the poor and the foreigner”.  Leviticus 19 : 10.  Editor’s Note:  Today, “good farming practice” means leaving as much plant residue as possible to prevent erosion and feed soil critters.  Grain fields are harvested with “header reels” to leave standing straw to slow wind and trap snow.  Farmers plant mixed species cover crops to feed earthworms over winter.  Fallen fruits are grazed, composted, or burned to break insect and disease cycles.  Vineyards and orchards are sown with weeds, legumes, wildflowers, and insectary crops to support large populations of beneficial insects.  More flowers = fewer pests.

“When you reap the harvest of your land, do not reap to the very edges of your field or gather the gleanings of your harvest”.  Leviticus 19 : 9.  Editor’s Note:  The right of the poor to glean fields is common to many cultures.  Modern farmers leave border rows unharvested.  Head rows are planted with “bee pasture”.  Strips of weeds, wildflowers, and insectary crops are sown within fields to feed beneficial insects.  Wildlife food plots and “insect refuges” are seeded in odd corners of land.  The idea is to encourage maximum populations of useful species.

Social Commentary:  In this modern world farmers comprise less than 2% of the United States population.  Most farms are located far from cities.  Fields are harvested by machines.  Thus, there are few rural poor and hardly any crops to glean.  This is in stark contrast to biblical times when 98% of the people were farmers, many of them hungry.  Today, feeding the urban poor is not easy.  Rural labor shortages mean there are few hands to pick fruits and vegetables.  Surplus crops often rot in the fields while Food Banks go empty.  The Bible is easy to read but difficult to practice.

“You shall not breed together two kinds of your cattle; you shall not sow your field with two kinds of seed, nor wear a garment upon you of two kinds of material mixed together”.  Leviticus 19 : 19.  Editor’s Note:  Ancient Jews had a passion for keeping everything separate.  This extended to cooking (do not mix meat and milk) and marriage (do not marry “gentiles” = non-Jews).  Modern agronomy has turned the old rules upside down.  Farmers now plant hybrid seeds and graze hybrid cattle on multiple species forage crops.  Science and practical experience have taught us that mixtures grow better than individual species grown separately.  Polycrops are the new “best practice”.  Grains and legumes are sown together.  Fields are planted with strips of unrelated crops.  The goal is maximum biodiversity.  Biology, not chemistry, keeps soils fertile and pests under control.

“But during the seventh year the land shall have a sabbath rest, a sabbath to the Lord; you shall not sow your field nor prune your vineyard”.  Leviticus 25 : 4.  Editor’s Note:  Long rotations break insect and disease cycles.  For example:  Farmers in Argentina rotate 7 years of field crops with 7 years of pasture.  (Alternating pasture and row crops is called “ley farming”).  7-year rotations are ideal for restoring soil structure and fertility.  Rule-of-Thumb:  Never plant the same crop on a field more than once every 7 years.  Reserving 1/7th = 14% of cropland for annual fallow is a great way to support large populations of wildlife and beneficial insects.

“A king who cultivates the field is an advantage to the land”.  Ecclesiastes 5 : 9.  Political Commentary:  Humility precedes learning.  There is much advantage in keeping leaders humble.  From a practical standpoint, a king busy growing his crops has little time for mischief.  Most people care not who runs the government as long as it leaves them alone.  “God bless us with a king who rules and does nothing”.  (Farmers around the world have inherent distrust of government.  This reticence comes from long experience:  When officials arrive, bad things happen).  Farmers who practice Biblical Agronomy tend to be independent spirits.  Many live off-grid.  The majority are socially conservative.  Most have root cellars or can their own vegetables.  Large numbers store a 2-year food supply.  “Biblical” farmers are much like the Amish:  They are part of our modern culture yet live apart from it.

“But on the seventh year you shall let it rest and lie fallow, so that the needy of your people may eat; and whatever they leave the beast of the field may eat.  You are to do the same with your vineyard and olive grove”.  Exodus 23 : 11.  Editor’s Note:  Planting monocrops year after year depletes soil fertility and promotes outbreaks of pests and diseases.  Farmers practicing Biblical Agronomy avoid these problems by keeping 7-year rotations and planting polycrops.  For example:  “The Twelve Apostles” is a multi-species forage mix including 4 grains + 4 legumes + 4 root or forb crops.  Mixed species produce more nutritious forage and higher yields.  “Tithing” 1/7th = 14% of cropland for annual fallow (weeds or mixed species cover crops) promotes large numbers of beneficial insects.  The good bugs eat the bad bugs.

“I will feed them with good pasture, and on the mountain heights of Israel shall be their grazing land”.  Ezekiel 34 : 15.  Editor’s Note:  “Mixed Farming” = growing plants and animals has been the foundation of agriculture since historic times.  The reason is simple:  Plants and animals have evolved to grow well together.  While it is possible to raise plants and animals separately, monocultures are much more susceptible to insects, diseases, and environmental stress.  Biological balance is a key principle of Biblical Agronomy.  Pastures grow better when grazed.  Crops yield more when dunged.  Animals stimulate plants to grow better.  Healthy plants keep animals in good condition.

“What the cows eschew the goats relish.  That which the goats ignore the sheep enjoy.  Upon what the sheep leave the birds feast.  Whatever the fowl demurs the worms delight.  In this way the land feeds all”.

“Thirty milking camels and their colts, forty cows and ten bulls, twenty female donkeys and ten male donkeys”.  Genesis 32 : 15.  Editor’s Note:  Smart farmers use rotation and polycrops to control pests and diseases.  The same principles apply to raising animals.  Herds should be rotated to improve pastures.  Mixed species control weeds and parasites.  For example:  Range chickens 3 or 4 days behind cattle.  Chickens eat fly maggots and keep pastures sanitary.  Every mouth eats something different and so the whole farm produces more food.

“The best medicine is the watchful eye of the herdsman”.

“Know well the state of your flocks, and pay attention to your herds”.  Proverbs 27 : 23.  Editor’s Note:  Anciently, herds grazed randomly and were moved irregularly.  Plants were overgrazed and pastures declined.   Modern farmers practice “Intensive Rotational Grazing”:  Animals are crowded into small paddocks then moved to fresh pasture every 12 to 24 hours.  Each meadow is rotated on a 30-day or longer calendar so plants have time to regrow.  Pasture rotation produces more forage and breaks parasite reproduction cycles.

“The sea coast will be pastures, with cottages for shepherds and folds for flocks”.  Zephaniah 2 : 6.  Editor’s Note:  Piling, carting and spreading manure is hard work.  “Sheep Folding” is easier:  Flocks are crowded into small fields at dusk where they urinate and defecate all night long.  At dawn, animals are turned into fresh pasture.   Fertilized ground can then be plowed and sown.  Alternatively, broadcast seed into standing vegetation then fold animals overnight.  Hooves trod seed into ground.  Trampled plants cover and protect germinating crops.  This is called “Stomp Seeding”.  Roman farmers averaged 40 to 50 bushels of wheat per acre using these methods.  Biblical Agronomy is all about balance.  Plants and animals grow well together.

“I shall become enlightened for the sake of all living things”.

Ten Agricultural Commandments:  Following is a list of biological principles for Biblical Agronomy.  Use these guidelines to make farm management decisions.

I.  Do Not Kill.  Find another way.  Use the least intrusive methods.  “Walk lightly upon the land”.

“Farmers are keepers of the earth”.

II.  Keep the Agricultural Sabbath.  Follow 7-year rotations.  Long rotations control most insects and diseases without need for human intervention.  Crop rotations improve soil tilth and fertility.

“At Nature’s table all are welcome”.

III.  Tithe for Nature.  Provide hospitality to all in need. Leave border rows unharvested.  Plant wildlife food plots.  Reserve 5% to 10% of farmland for hedgerows, windbreaks, and wood lots.  Wildlife are an essential part of the agricultural ecosystem.

“God loves all his creatures, even bugs”.

IV.  Feed the Insects.  Reserve 5% to 10% of cropland for native weeds, insect refuges, bee pasture, and insectary crops.  Conventional monocrop farms are “green deserts” without nectar or pollen for beneficial insects.  Feed the good bugs and they will protect your crops.

V.  Sow Polycultures Whenever Practical.  Plant the “Holy Trinity” and “The Twelve Apostles”.  Mixed species are the key to soil fertility and high yields.

VI.  Do Not Plow.  Practice zero-tillage whenever possible.  Symbiotic fungi are essential to plant health and nutrition.  Beneficial fungal networks must be protected at all times or soil ecology will collapse.

VII.  Keep Soil Covered at All Times.  Soil is a living organism that requires air, water, food, and shelter.  Keep it warm during winter and cool over summer.  Do not let topsoil dry out.  Prevent crusting and compaction so soil can breathe and rain can enter.  Protect fields with mulch or live plants 365 days yearly.  “Keep fields green”.

“Good farmers grow fungi.  The fungi grow the crops”.

VIII.  Feed the Fungi.  Plants feed sugar to fungi.  Fungi provide water and minerals to plants.  Trading requires live roots or fungi die or go dormant.  Plant productivity is directly related to the number and extent of fungal networks.  More fungi = higher yields.  Good farmers keep their fields covered with growing plants year-round.

“Roots in the ground all year round”.

IX.  Encourage Maximum Biodiversity.  Genesis is the heart of Biblical Agronomy.  Agriculture is all about creating life.  Ecosystem productivity and stability are directly related to number of species.  More species = healthy ecology = higher yields.  Good farmers plant many varieties to provide food and shelter for all God’s creatures.

X.  Grow Crops and Animals Together.  Plants and animals are like two sides of an arch:  Remove one and the other falls.  Mixed farms have more biological stability and greater resilience to environmental stress and economic change.  Wide diversity protects farmers from crop failures and uncertain markets.

“The Lord gave the word and great was the company of the creatures”.

The Eleventh Commandment:     “Thou shalt inherit the holy earth as a faithful steward conserving its resources and productivity from generation to generation.  Thou shalt safeguard thy fields from soil erosion, thy living waters from drying up, thy forests from desolation, and protect thy hills from overgrazing by the herds, that thy descendants may have abundance forever.  If any shall fail in this stewardship of the land, thy fruitful fields shall become sterile stony ground or wasting gullies, and thy descendants shall decrease and live in poverty or perish from off the face of the earth”.  [Walter Clay Lowdermilk, soil conservationist, radio broadcast from Jerusalem, June 1939].

Wrapping It Up:     Biblical Agronomy is not so much a rigid set of rules but rather a way of thinking about biology.  Adapt basic principles to fit local conditions.  The key is to be practical rather than zealous.  God will not smite you if you spray the locusts.

Agronomy Notes:

Bee Pasture = Plants selected for long flowering seasons and large amounts of nectar and pollen.  Wild bees and other native insects provide most of the pollination for agricultural crops.  Good farmers sow 5% to 10% of farmland with bee forage.  (If you cannot afford seed plant native weeds).

Border Rows = Crops growing along field edges.  Farmers often leave 2 to 4 rows unharvested to feed wild animals.  Border row dimensions are determined by the width of planting and harvesting machinery.

Head Rows = Empty space at field ends used for turning tractors and farm equipment.  On conventional farms head rows are covered with sod or left bare.  On biologically managed fields head rows are planted with clover, wildflowers, native weeds, or other “bee forage”.  The idea is to provide food and shelter to encourage large numbers of beneficial insects.

Hedgerows = Narrow lines of small trees or shrubs planted to contain animals, slow wind, trap snow, moderate micro-climate, and provide food and shelter for beneficial wildlife.  Ideal hedgerows are composed entirely of economic species that can be harvested for nuts, berries, fruits or other cash crops.  Plant 40 or more species per linear mile for high biodiversity.  Hedgerows support large populations of insect eating birds.

Insectary Crops = Plants with many small flowers ideal for feeding beneficial insects.  For example:  Anise, buckwheat, caraway, clover, coriander, dill, and fennel.  These can be combine harvested and the seed sold for profit.

Insect Refuges = Standing crops left unharvested so insects have undisturbed habitat for feeding and breeding.  For example:  If you mow a hay field all at once the insects have nowhere to go and nothing to eat.  The solution is to leave a strip of meadow unharvested so insect populations are preserved.  (If land is scarce sow native weeds in odd corners or other spaces unsuitable for farm machinery).

“Rotational Grazing Rule-Of-Thumb:  Eat 1/3, Stomp 1/3, Leave 1/3”.

Intensive Rotational Grazing = Crowding animals into small paddocks then moving herd to fresh pasture every 12 to 24 hours.  Pastures are rotated on 30-day or longer cycles so plants have time to regrow.  Rotational grazing produces large amounts of highly nutritious forage.  400% yield increases are possible with mixed species forage crops. Long rotations break insect, disease and parasite reproduction cycles.  (Mob grazing is a similar practice).

Ley Farming = Rotating pasture and field crops to control weeds and fertilize soil.  Combining animals in farm rotations boosts crop yields.  Manure stimulates plant growth more than equal weights of fresh or composted grass.  (Strange things happen in a cow’s stomach.  Grass goes in and super-charged fertilizer comes out.  How this happens is scientific mystery).

Living Mulches = Short plants sown to cover the soil and prevent weed growth.  Cash crops are seeded or transplanted into the living mulch using no-till equipment.  For example:  Peppers can be transplanted into an established sward of Dutch White Clover (Trifolium repens).  The clover smothers weeds and feeds nitrogen to the cash crop.

Mixed Farming = Growing a wide variety of plants and animals on the same farm.  Including pasture and hay in crop rotations.  Grazing herds on harvested fields.  Using animals to control weeds.  Spreading manure to fertilize cash crops.  Mixed farms are more biologically stable and much less susceptible to economic and environmental changes.

Mob Grazing =  Concentrating very large herds on small pastures is called “Mob Grazing”.  Density is about 800 to 1,000 cows per acre and animals are shifted every 1 or 2 hours.  Meadows are rotated on long 6 to 12 month cycles so plants regrow.  High density and long rotations mimic natural migration of buffalo and other vast herds on prairie ecosystems.  (Intensive Rotational Grazing is a closely related practice).

Mulch-In-Place = Sow a fast-growing cover crop that produces large amounts of biomass (stems and leaves).  Kill the mature cover crop with a roller-crimper or sickle-bar mower.  Seed or transplant through the mulch using no-till equipment.  Mulch-In-Place provides 90% to 95% weed control, as good or better than glyphosate (Roundup) or other conventional herbicides.

Multiple Species Cover Crops = Mixtures of plants grown to control weeds, feed livestock, and fertilize fields.  For best results sow many species to enhance biological synergy.  Mixed plants feed soil bacteria and support vast networks of beneficial fungi.  The fungi provide water and nutrients to the plants.  Basic cover crop mixes include:  2 cool season grasses + 2 cool season legumes + 2 cool season broad leaf plants + 2 warm season grasses + 2 warm season legumes + 2 warm season broad leaf plants + 2 or more root crops = 14 or more species.  Use no-till equipment to drill 20 pounds of seed per acre in 2-inch deep furrows spaced 7.5 inches apart.

Polyculture = Growing 2 or more species together.  Polycrops greatly reduce insect pests and produce large amounts of sugar to feed soil bacteria and fungi.  Most soil humus is made by bacteria that eat sugar exuded by plant roots.  Agricultural productivity is directly related to the number of polyculture species.  More species = more leaves and stems = more photosynthesis = more sugar exuded by roots = larger populations of soil microbes = faster nutrient cycling = higher yields.  Some farmers plant cover crops with 60 species!  “There is strength in numbers”.

Strip Cropping = Polyculture system adapted to farm machinery.  Divide farms or fields into narrow strips following land contours.  Plant adjacent strips with unrelated crops to maximize edge effects and increase biodiversity.  Adjust strip widths to match planting and harvesting equipment.  For best results strips should not be wider than 200 feet on flat land or 50 feet on hillsides.  Planting a variety of crops spreads economic and biological risk.  Strip cropping supports large populations of beneficial insects that keep pests under control.

Weed Farming = Manage weeds just like any other cover crop.  (A)  Fertilize and irrigate weeds to promote maximum growth, then flatten with a roller-crimper or sickle-bar mower.  Immediately seed or transplant through the weed mulch using no-till equipment.  (B)  Overseed native weeds with clover or other legumes to make a cheap multi-species cover crop.  (C)  Harvest weeds like silage using a forage chopper.  Use chopped weeds to mulch cash crops.  (D)  For biological pest control, plant weeds next to crops needing protection.  Alternatively, mow strips through tall weeds then plant cash crops down the rows.  Crops grown in weeds rarely have pest problems.  (E)  Native weeds support enormous populations of beneficial insects.  Good farmers reserve 5% to 10% of cropland for weeds.  For best results grow weeds in narrow strips within fields and around field borders.  (F)  Sow weeds to heal bare or worn-out soils.  Wildflower hay can be baled and spread for this purpose or haul weed seeds from the nearest grain elevator.  (G)  Grind weed seeds in a roller mill to make free fertilizer.  Use weed seed meal just like cotton seed meal or other organic plant food.  (H)  When insects threaten to overwhelm, soak chopped weeds in water, strain, then spray “weed tea” on plants.  Weed juice chases away most bugs.

Wildlife Food Plots = Small fields planted with grains, legumes, forbs, and root crops to feed deer, pheasants, turkeys, rabbits, and other game animals.  Wildlife plots are typically seeded on poor, wet or rocky land unsuitable for hay or cash crops.

Windbreaks = Rows of trees, shrubs, perennial Pampas grass, or other vegetation planted to slow wind, stop erosion, trap snow, and moderate micro-climate.  For best results plant windbreaks no closer than 50 feet nor farther than 150 feet apart.  Effective wind protection extends downwind 10 times average tree height.  Plant 40 species per linear mile for high biodiversity.  Windbreaks increase average yields 15% by reducing water loss from crop leaves.  (Common synonyms include:  Greenbelts, Hedgerows, and Shelterbelts).

Wood Lots = Small areas of forest grown to provide firewood.  For highest yield manage trees by coppicing:  Cut down 7-year old trees then harvest on 7-year cycles when stump or root sprouts reach 2 to 3 inches diameter.  Divide forest into 7 sections then harvest each part sequentially.  Coppiced trees live hundreds of years because the are constantly renewed.

Related Publications:     Cover Crop Primer; The Twelve Apostles; Biological Agriculture in Temperate Climates; Polyculture Primer; Strip Cropping Primer; Worm Farming; Managing Weeds as Cover Crops; Earthworm Primer; Planting Maize with Living Mulches; Living Mulches for Weed Control; Crops Among the Weeds; The Edge Effect; Organic Herbicides; Forage Maize for Soil Improvement; Coppicing Primer; Forage Radish Primer; Weed Seed Meal Fertilizer; Intensive Rice Culture Primer; Trash Farming; Pelleted Seed Primer; Upside Down Potatoes; Maize Polyculture Trial 2007 – 2016; No-Till Hungarian Stock Squash; and the Rototiller Primer.

Would You Like To Know More?     For more information on biological agriculture and practical polyculture please visit:  http://www.worldagriculturesolutions.com  — or —  send your questions to:  Eric Koperek, Editor, World Agriculture Solutions, 413 Cedar Drive, Moon Township, Pennsylvania, 15108 USA.

About The Author:     Mr. Koperek is a plant breeder who farms in Pennsylvania during summer and Florida over winter.  (Growing 2 generations yearly speeds development of new crop varieties).

THE TWELVE APOSTLES

What Is It?     “A multi-species cover crop containing 12 varieties often 4 grains, 4 legumes, and 4 root crops”.

12 Apostle mixes are frequently planted by farmers practicing “Biblical Agronomy”.

For example:  Oat, pea, turnip, rye, winter vetch, mangel-wurzel (stock beet), wheat, clover, forage radish, barley, frost bean (fava bean), and rutabaga.

Other possible species include:  Millet, sorghum, buckwheat, maize, teff, sunflower, lentil, lupine, runner bean, sunn hemp, soy bean, flax, rapeseed, safflower, kale, and many other varieties.  Choose what grows well on your farm.

“Melange:  A mixture of grains, legumes, and root crops grown to feed animals and improve soils”.

All melanges contain at least 3 components:  1 grain + 1 legume + 1 root crop = “Holy Trinity”.

“We sowed the Holy Trinity.  Father Michael blessed the crop and our cattle thrived”.

For example:  Thomas Jefferson sowed buckwheat, winter vetch, and turnips to cure “tired soils”.

There is nothing magical about the number 12.  Melanges often contained fewer species.  Farmers blended odds and ends from their granaries or whatever they could buy cheaply.

Growing several species together (polyculture) is not a new idea.  The practice dates to Roman times.  Middle Age farmers called mixed plants “melanges”.  Today, modern agronomists call them “multi-species cover crops”.

Call it what you will, but “bio-diversity” (many species) is a key principle of Biological Agriculture.  Life breeds life.  Each additional species creates more food and shelter for myriad lifeforms.  Grow multi-species cover crops and soon your soil will teem with billions of critters.  More critters = faster nutrient cycling = higher yields.

“Feed the critters and the critters will feed your crops”.

I have not purchased fertilizer (chemical or organic) in 19 years.  Truly, there is power in numbers.  More species means more money in my pocket.

Try this on your farm:  Keep your ground covered with growing plants year-round.  Never plant a crop by itself.  Always plant mixed species.  Copy nature in your fields.  You will be glad you did.

“Roots in the ground all year round”.

Agronomy Notes:

If you do not have experience with polycultures, try something simple.  Winter grains and Dutch White Clover (Trifolium repens) can be planted together at the same time.  (Broadcast clover at 12 pounds per acre).  Clover suppresses weeds and provides nitrogen to the cereal crop.  When the grain is harvested clover covers the field.  The following season mow first then seed or transplant into clover living mulch using no-till equipment.

Different sized seeds can be mixed in the same seed box and drilled into a common furrow.  Big seeds like maize, sunflower and peas break through the soil so little seeds like clover and turnips germinate easily.  Furrows spaced 7.5 inches apart are ideal for most multi-species cover crops.

If desired, seeds can be mixed with cornmeal or sawdust to provide more volume for even distribution.

Small seeds like wheat, vetch and sugar beet can be surface seeded.  For best results use pelleted seed.  Broadcast into standing vegetation then immediately flatten plants with a roller-crimper or cut with a sickle-bar mower.  Surface mulch covers and protects germinating seedlings.

Large seeds like maize, sunflower and beans are best planted underground with no-till equipment.  Surface sow large seeds only with monsoon rains or daily irrigation.

When sowing grains mix several varieties with the same maturity date.  For example:  3 varieties of wheat or 4 varieties of barley.  Planting multiple varieties often increases yields 5% to 7%.  You can also sow different species together:  Mixtures of rye and wheat are called maslin; blends of barley and oats are called dredge; a polyculture of oats, peas and beans is called bulmong.  Mixed grains have better resistance to insects and diseases.

Plant mixtures grow better than individual species.  Sow barley, pinto beans, and tillage radish in separate plots.  Plant a fourth plot with all 3 species.  Come the drought and monocrops shrivel and die, but the polycrop remains green.  Mixed species help each other.  They also support vast networks of beneficial fungi.  The fungi provide water and nutrients to the plants.

“Good farmers grow fungi.  The fungi grow the crops”.

Mixed plants capture more sunlight and produce more biomass.  Rule-of-Thumb:  A polycrop of 1 grain + 1 legume + 1 root crop produces 2 times more vegetation by weight than the same species grown separately.

Polycultures increase grain yields substantially.  For example:  Oats grown alone yielded 43 bushels per acre.  Oats grown with peas and turnips yielded 62 bushels per acre.

Rule-of-Thumb:  You need at least 8 species to get significant benefits from polycultures.  For example:  Oats, peas and turnips yielded 62 bushels per acre.  Oats grown with peas, pinto beans, Dutch white clover, Japanese long turnips, tillage radish, stock beet, and rutabaga yielded 76 bushels per acre.  More species = more biological synergy = higher yields.  For example, mixtures of 12 to 16 species out-yield blends of 8 or fewer species.  Communities of 30 species yield more forage than pastures with only 20 varieties.

Pair tall growing cash crops with short height legumes.  For example:  Sow tall heritage varieties of wheat with Dutch white clover.  Dutch clover grows only 6 inches high so it competes minimally for sunlight with companion crops.  (Planting clover with dwarf or semi-dwarf cereals reduces yields 30% to 50%.  Clover shades grass stems which reduces photosynthesis.  Less sunlight = lower yields).

Sow non-climbing beans with maize for efficient combine harvest.  Vines without tendrils are the best companion plants.  For example:  Maize planted with climbing velvet bean (Mucuna pruriens) yielded 128 bushels per acre.  Maize seeded with non-climbing pinto beans yielded 208 bushels per acre.  Similarly, oats planted with climbing peas yielded 19% less than oats seeded with dwarf peas.

Earthworm (Lumbricus terrestris) growth is determined mostly by the amount and quality of available food.  Plant monocrops and worms take 3 years to reach sexual maturity.  Sow polycrops and earthworms take only 2 years to reproduce.

Earthworms thrive on balanced diets of mixed plants.  1 acre of orchard grass (Dactylis glomerata) supported a population of 361,000 earthworms.  1 acre of 50% orchard grass + 50% Dutch white clover produced 647,000 worms per acre.  Earthworm numbers soared to 2,150,000 per acre planted with a 16 species mix of grasses, legumes, forbs, and root crops.

1,350,000 earthworms per acre feeding on a 20-variety cover crop mix produce 2,700 pounds of surface castings each day of the growing season = about 1 ounce of manure per square foot = 68 pounds of available nitrogen, 35 pounds of phosphorous, and 41 pounds of potassium per acre daily.  That is more than enough fertilizer for maize, sugar cane, potatoes, or any crop a farmer wants to grow.

“Feed the worms and they will tend your crops”.

Cereals grown with companion plants are less susceptible to lodging = falling down.  Over a 61-year period, oats grown by themselves lodged 38 times.  Oats sown with dwarf peas and turnips lodged only 11 times.  In all 11 cases full crops were harvested by cutting and swathing oats into windrows.  Peas and turnips held oat stems above ground so the grain did not spoil in the mud.  (Grain on the ground cannot be harvested due to risk of contamination by pathogenic mold and bacteria).

Weedy fields can be improved by surface planting with clover or other small-seeded legumes.  Large seeded legumes like peas and beans should be drilled with no-till equipment.  The combination of native weeds and nitrogen-fixing legumes makes a cheap mixed species cover crop that will support large populations of earthworms and beneficial insects.  For biological pest control reserve 5% to 10% of cropland for native weeds.

German farmers have a long history of planting Landsberger Gemenge” = Hill Mixture = Mountain Mixture = Waste Land Mixture = multi-species forage crop sown on land unsuitable for plowing.  Typical mixes include 1 cereal or grass + 2 legumes + 1 cabbage family plant or root crop.  For example:  Winter rye + red clover + winter vetch+ forage kale or turnip.  The combination of cereal, pulse, forb, and root crops makes an ideal balanced diet for grazing animals.  Cattle gain 2.5 to 3.5 pounds daily when feeding on forage mixtures of 4 to 5 species.

Plant mixtures extend growing seasons by increasing soil and air temperatures.  Seed tall, medium and short varieties to hold warm air near soil surface.  Multiple species can raise air temperatures 10 degrees Fahrenheit and expand growing seasons by 30 to 60 days.

Related Publications:     Crop Rotation Primer; Biblical Agronomy; The Twelve Apostles; Biological Agriculture in Temperate Climates; Polyculture Primer; Strip Cropping Primer; Worm Farming; Managing Weeds as Cover Crops; Earthworm Primer; Planting Maize with Living Mulches; Living Mulches for Weed Control; Crops Among the Weeds; and The Edge Effect.

Would You Like To Know More?     For more information on biological agriculture and practical polyculture please visit:  http://www.worldagriculturesolutions.com  — or —  send your questions to:  Eric Koperek, Editor, World Agriculture Solutions, 413 Cedar Drive, Moon Township, Pennsylvania, 15108 USA.

About The Author:     Mr. Koperek is a plant breeder who farms in Pennsylvania during summer and Florida over winter.  (Growing 2 generations yearly speeds development of new crop varieties).

BIOLOGICAL AGRICULTURE IN TEMPERATE CLIMATES

A Seminar at Cornell University, Monday 19 November 2018. Sponsor: Norman Uphoff, Professor Emeritus, International Programs SRI Project, College of Agriculture and Life Sciences. Guest Speaker: Eric Koperek = erickoperek@gmail.com. Website: http://www.worldagriculturesolutions.com

My ancestors were literally dirt poor = without soil. They farmed abandoned quarry land. Over the course of 8 centuries they created 10 to 15 feet of topsoil = 1/5 to 1/4 inch yearly. This is how they did it:

BIOLOGICAL AGRICULTURE PRINCIPLES

Copy Nature: “Gardeners are the best farmers”. Observe nature closely then mimic what you see. How do you grow your garden? What do you see in the forest? Copy this in your fields. The idea is to combine biological processes with labor efficient agricultural machinery.

Keep Fields Green: Fields should be covered with growing plants 365 days yearly. Do not waste sunlight. The goal is to produce the maximum possible amount of organic matter per square foot each year. More plants = more organic matter = increased populations of soil “critters” = faster nutrient cycling = higher crop yields. “Roots in the ground all year round”.

No Soil Disturbance: Avoid plowing, disking, harrowing, and cultivation whenever practical. Transplant crops or surface sow using pelleted seed and no-till equipment. Tillage kills earthworms and destroys fungal networks = lower crop yields. “Good farmers grow fungi. The fungi grow the crops”.

Keep Soil Covered: Use living mulches, dead mulches, or growing crops to keep fields covered year-round. Control weeds with Mulch-In-Place. Never leave soil bare not even for a single day. Harvest and replant fields the same day or try relay planting: Sow the following crop several weeks before the first crop is harvested.

Worm Farming:  Use earthworms (Lumbricus terrestris) to till and fertilize fields. Earthworms are the key to biological soil management. Worms eat their weight in soil and organic matter daily. One million earthworms per acre = 1 ton of worm manure daily. More worms = more nutrients = higher crop yields. “Feed the worms and the worms will tend your crops”.

Increase Biological Diversity: Grow many crops rather than one crop. Plant polycultures whenever practical. Multiple crops diminish risk of crop failure. “Life breeds life”. More crops = more biological activity = higher yields.

Watershed Management: Agriculture is all about water management. Mind the water and everything else will fall in place. The goal is zero runoff = trap every drop of rain and flake of snow that falls on the land. Store water for dry seasons. Build ponds wherever possible. Irrigate whenever practical. Water is the best investment a farmer can make. One drought pays for an irrigation system.

Biological Nitrogen Fixation: Grow your own fertilizer. Rotate nitrogen fixing cover crops with cash crops. Plant small grains and clover together. Seed maize into roller-crimped Red Clover (Trifolium pratense). Transplant vegetables into Dutch White Clover (Trifolium repens). Topseed cash crops with low growing legumes. Include 50% legumes in pasture and cover crop mixes.

Increase Edge Effects: Divide big fields into smaller fields. Plant hedgerows and windbreaks. Mix fields with pastures, orchards, hay fields and forest. Grow unrelated crops in narrow strips = strip cropping. Plant borders and head rows with clover and insectary crops. The idea is to attract and maintain large populations of beneficial insects. “The good bugs eat the bad bugs”.

Plant Multi-Species Cover Crops: Mixtures of plants repel insect pests, fix more nitrogen, better resist drought, and produce more organic matter than plants grown alone. Plants in mixtures cooperate with each other sharing water and nutrients through fungal networks. Multi-species cover crops can fix more than 100 pounds of nitrogen per acre; this nitrogen is not accounted by conventional soil tests. Mixed species cover crops promote maximum earthworm populations, up to 8 million worms (8 tons) per acre = 184 worms per cubic foot of topsoil.

Long Rotations Increase Yields: 7-year rotations best control soil diseases and insect pests. Never follow similar crops in sequence (oats & wheat; carrots & potatoes; lettuce & spinach). Never follow crops in the same botanical family (tomatoes & peppers; pumpkins & squash). Never follow plants sharing common pests or diseases.

Grass Crops Make Deep Soils: Integrate perennial grass crops into field rotations. This is called Ley Farming. Perennial pastures and grazing animals promote large earthworm populations = 1 ton per acre = 1 million worms per acre = 23 worms per cubic foot of topsoil = 120 miles of earthworm burrows per acre. Worms produce vast amounts of castings = manure, more than needed for any commercial crop.

Integrate Animals and Crops: Use grazing animals to fertilize fields. Practice Rotational Grazing, Mob Grazing, Stomp Seeding, Cattle Penning, and Folding = Yarding to improve fields and increase yields. Sustainable agriculture is difficult to achieve without farm animals.

Plant Weeds and Crops Together: Reserve 5% to 10% of farm for native weeds. Plant weeds in narrow strips within and around fields. Grow orchards and vine crops in weeds. Weeds provide food, shelter, and alternate hosts for beneficial insects that protect cash crops. “Weeds are the shepherds of the garden”. More weeds = less insect pests.

Plant Flowers with Crops: Most beneficial insects have small mouth parts and so they need tiny flowers on which to feed. Healthy farms grow many small-flowered plants to encourage maximum populations of helpful insects. For best results plant flowers and weeds next to crops needing protection. Sow flowers around fields, orchards, vineyards — anywhere there is open space. More flowers = less pests.

Making Sense of It All

Biological agriculture requires patience. Converting a field from conventional chemical agriculture usually requires 12 to 15 years before the soil is healthy enough to sustain commercial yields without added fertilizer.

Active biological soils easily produce 160 bushels (8,960 pounds) of maize per acre without plowing, fertilizer, herbicides, or cultivation. Irrigated fields can exceed 200 bushels (11,200 pounds) per acre.

On biologically managed soils, most Japonica rice varieties yield 3.5 ounces of grain per plant = 9,528 pounds per acre when plants are direct seeded 12 inches equidistantly on drip irrigated fields. (Indica rice varieties yield less, about 1.5 ounces of grain per plant = 4,083 pounds per acre).

Related Publications:     Crop Rotation Primer; Biblical Agronomy; The Twelve Apostles; Polyculture Primer; Strip Cropping Primer; Worm Farming; Managing Weeds as Cover Crops; Intensive Rice Culture Primer; Weed Seed Meal Fertilizer; Earthworm Primer; Planting Maize with Living Mulches; Living Mulches for Weed Control; Crops Among the Weeds; Forage Maize for Soil Improvement; Forage Radish Primer; The Edge Effect; Coppicing Primer; and Rototiller Primer.

Would You Like To Know More? Please contact the Author directly if you have any questions or need more information about Biological Agriculture.

Eric Koperek. Office Address: 413 Cedar Drive, Moon Township, Pennsylvania, 15108 United States of America. Cellular Telephone Number: 412-888-7684. E-Mail Address: erickoperek@gmail.com. Website Address: http://www.worldagriculturesolutions.com

About The Author: Mr. Koperek is a plant breeder who farms in Pennsylvania during summer and Florida during winter. (Growing 2 generations yearly speeds development of new crop varieties).

 

 

 

 

 

 

STRIP CROPPING PRIMER

What Is It?     Strip cropping is a natural way to control pests without using insecticides.  Unrelated crops are grown in narrow strips to increase biodiversity and maximize edge effects.  Beneficial insects flourish and eat harmful bugs.

The Edge Effect:     Life increases proportionately to the boundary area between different environments.  For example, a meadow and a hedgerow are unique ecologies.  Each has its own mixture of species.  There is an abundance of food and shelter along the edge where the two environments meet.  Interaction along this edge promotes large populations and increased diversity.

Ecology Math:     Square fields have less edge than rectangular fields.  For example, a square field measuring 300 feet on each side has 1,200 feet of edge (300 feet per side x 4 sides = 1,200 feet).  Take the same field and stretch it into a rectangle 100 feet wide x 900 feet long.  Both fields have the same area (90,000 square feet) but the rectangular field has 2,000 feet of edge (900 + 900 + 100 + 100 = 2,000 feet).  The perimeter of the rectangular field is 40% larger than the square field.  More edges = more food and habitat = more species and larger populations.  Hunters understand this instinctively.  Long, narrow fields have more browse (twigs and buds) along their perimeter.  More hedgerow = more browse = more food = more deer.

Agricultural History:     Farming in the Middle Ages was not easy.  Wood plows were heavy and difficult to turn.  The solution was to make long, narrow fields.  Long fields required fewer turns.  Each field was one “furrow” long = 1 furlong = 1/8th mile = 220 yards long x 22 yards wide = 4,840 square yards = 1 acre.  A man with a team of oxen took a whole day to plow 1 acre.  Adjacent fields were planted to unrelated crops, for example:  Peas, Wheat, Turnips, and Pasture.  Narrow strips and diverse crops increased edge effects supporting large populations of beneficial insects.  The good bugs ate the bad bugs.

Agroecology:     Wind the clock back to when knights went clanking around in armor.  Northwest France (Normandy) was divided into thousands of little fields surrounded by hedgerows.  Each field measured about 1 1/4 acres.  This mixture of small fields and hedgerows is called bocage.  The bocage landscape contains hundreds of miles of biological edges = vast populations of predatory and parasitic insects.  Modern farmers in the bocage rarely have pest problems.  Significant outbreaks occur about once every 20 years and are mostly self-correcting without insecticides.

“Altering the geometry of fields costs nothing and can reduce or eliminate pesticide use.”

Practical Polyculture:     Plant 4 rows of corn then 4 rows of soybeans.  Repeat this pattern across fields and farms following land contours.  Result:  Pests go down 50% and corn yields go up 15% (because of increased light penetration into the crop canopy).

  • Alternate tall and short crops.  Insect pests do not like fields with mixed light and shade.  Example:  Sunflowers — Alfalfa — Barley — Lentils
  • Adjust strip widths to fit planting and harvesting equipment.  Try to keep strip widths as narrow as mechanically practical.  Narrow strips better control insect pests.  Plant strips no wider than 200 feet to encourage rapid movement of beneficial insects into fields.  Example:  Hay (150 feet) + Soup Beans (75 feet) + Safflowers (75 feet)
  • Plant adjacent strips to unrelated crops.  Plant as many different crops as economically practical.  Diverse crops reduce insect pests and spread market risk.  Example:  Wheat — Peas — Flax — Soy Beans — Barley — Alfalfa
  • Seed grains and legumes together.  Legumes fix nitrogen, protect soil and control weeds.  Example:  Winter Wheat + Dutch White Clover  — or —  Field Corn + Red Clover  — or —  Oats + Forage Peas  — or — Winter Rye + Winter Vetch
  • Alternate legumes with non-legumes.  Legumes improve soil, feed earthworms and attract beneficial insects.  Example:  Canary Seed — Lentils — Barley — Soy Beans — Wheat — Field Peas — Flax — Alfalfa
  • Plant windbreaks not closer than 50 feet nor farther than 150 feet apart.  Windbreaks increase biological diversity and help crops grow better.  Windbreaks do not have to be great belts of trees.  A single row of shrubs or perennial pampas grass will slow wind and increase crop humidity.  Example:  Trees (25 feet wide) + Cropland (150 feet wide)  — or —  Shrubs (10 feet wide) + Cropland (100 feet wide)  — or — Pampas Grass (3 feet wide) + Cropland (50 feet wide)
  • Alternate strips of native weeds with cropland.  Space weed strips not farther than 200 feet apart.  Weeds should comprise at least 5% to 10% of total cropland.  Native weeds are essential to provide food and shelter for beneficial insects.  Example:  Weed Strip (15 feet) + Cropland (135 feet)
  • Plant several varieties of the same crop together.  Choose varieties that have the same harvest date.  Varieties can be mixed or drilled in separate rows.  Alternatively, plant similar species that ripen together.  For example:  Winter Wheat + Winter Rye.  Genetic diversity reduces the chances of crop failure due to weather, disease or insects.

Try This On Your Farm:     Divide big fields into narrow strips and watch your pest problems go away.  Strip cropping combines the biological advantages of polycultures with the economic efficiency of farm machinery.

Related Publications:     Crop Rotation Primer; Biblical Agriculture; The Twelve Apostles; Maize Polyculture Trial 2007-2016; Managing Weeds as Cover Crops; Trash Farming; No-Till Hungarian Stock Squash; Planting Maize with Living Mulches; Living Mulches for Weed Control; 2012 Tomato and Sweet Potato Polyculture Trial; Crops Among the Weeds; and The Edge Effect.

Would You Like To Know More?     Contact the Author directly if you have any questions or need more information about polycultures or strip cropping.  Please visit:  http://www.worldagriculturesolutions.com  — or — send your questions to:  Eric Koperek, Editor, World Agriculture Solutions, 413 Cedar Drive, Moon Township, Pennsylvania, 15108 United States of America  — or — send an e-mail to:  http://www.worldagriculturesolutions.com

About The Author:     Mr. Koperek is a plant breeder who farms in Pennsylvania during summer and Florida during winter.  (Growing 2 generations yearly speeds development of new crop varieties).

MAIZE POLYCULTURE TRIAL 2007-2016

Abstract:     This experiment measures the productivity of a 3-species polyculture of flint corn, pole beans, and winter squash.  Heritage varieties are grown in traditional hills with fish fertilizer.  Areas between hills are untended and covered with native weeds. 

Experimental Location:     Butler County, Pennsylvania, United States of America.  40.8606 degrees North Latitude, 79.8947 degrees West Longitude.

Climate:     Butler County has a temperate climate with cold winters.  Average annual temperature = 48.75 degrees Fahrenheit = 9.3 degrees Centigrade.  Average yearly rainfall = 41.85 inches = 106.299 centimeters.  Average yearly snowfall = 37 inches = 93.98 centimeters.  Average Last Spring Frost (36 degrees Fahrenheit) = 26 May.  Average First Fall Frost (36 degrees Fahrenheit) = 23 September.  Frost Free Growing Season = 119 days (about 4 months).

Experimental Plot Size:     1/4 acre = 10,890 square feet exactly = 104 x 104 feet approximately = 10,816 square feet nominal measure.

Experimental Design:     A 1/4-acre plot was planted each year.  Crops were not rotated; hills were replanted each year in keeping with traditional Indian practice.  The experiment was repeated for 10 years (to account for weather variability between years).  10 data sets ensure reliable averages for accurate conclusions.

Soil Type:     Heavy Clay Loam

Crop Rotation:     Field was fallowed in native weeds for 7 years prior to experiment.  Hilled crops were NOT rotated.  Hills were replanted each year following traditional Indian methods.  (Historical sources record that native farmers practiced long rotations.  When soils became exhausted, hills were moved or fields abandoned).

Tillage:     There is no easy way to make Indian planting hills using conventional farm machinery.  Consequently, tree planting augers were used to dig holes 2 feet wide x 2 1/2 feet deep.  Holes were then refilled with excavated soil to make traditional mounds approximately 1 foot high.  Augers save considerable hand labor while preserving weed ground cover.  (The idea is to use native weeds as a multi-species cover crop.  Cash crops are planted in hills surrounded by weeds.  The weeds protect crops from insect pests).

Plant Density:     Hills were equidistantly spaced every 4 feet on center = 26 rows x 26 hills within each row = 676 mounds in the 1/4 acre research plot.  Each hill contained 4 maize plants seeded evenly around a circle 1-foot diameter.  When maize plants reached 2 feet high (4 to 8 leaves), 1 pole bean seed was planted 3 inches from each maize stalk.  676 hills x 4 maize plants per hill = 2,704 maize plants per 1/4 acre.  676 hills x 4 bean plants per hill = 2,704 bean plants per 1/4 acre.  Squash plants were set every other row and every other mound within alternate rows  = 8 feet x 8 feet apart = 13 rows x 13 mounds within each row = 169 squash plants per 1/4 acre.

Plants Per Acre:     10,816 maize plants; 10,816 bean plants; and 676 winter squash plants per acre.  For ease of comparison, yields are summarized in pounds per acre.

Transplant Size:     Squash transplants were 4 weeks old.  All plants were about 4 inches high.  Transplants were grown in 3 1/2 inch interior diameter peat pots filled with crumbled, dried cow manure.

Crop Varieties:     Floriani Red Flint Corn; Scarlet Runner Pole Bean; and Waltham Butternut Winter Squash.

Predominant Weed Species:     Pigweed (Amaranthus blitum), Lambs Quarters (Chenopodium album), Bull Thistle (Cirsium vulgare), Foxtail Millet (Setaria species), and Morning Glory (Ipomoeae species).

Weed Management:     No attempt was made to eradicate weeds.  Fields were mowed as close to ground level as practical immediately prior to seeding and transplanting.  Cut weeds were used as mulch for planting mounds, about 2 1/4 pounds (dry weight) of weed mulch per hill.  Squash vines overwhelmed most weeds.  Wild morning glory vines were the most difficult to control and some hills (about 15 percent on average) were nearly overrun.  Hand pruning was necessary to prevent crop loss.  A second mowing (when squash vines started to run) effectively suppressed weed growth, but squash and weeds battled for dominance in the “No Man’s Land” between hills.

Irrigation:     Crops were NOT irrigated, in keeping with traditional practice.  There is no historical record of Eastern North American Indians irrigating their crops, probably because there was little need to do so and also because native farmers did not have effective irrigation technology.  Carrying water in gourds, bark buckets, and clay pots is grueling labor.

Insect Control:     No active measures were taken to control insect pests.  Native weeds provided food and shelter for many beneficial insects that protected crops.

Fertilizer:     Fresh trash fish or fish scraps were too difficult to obtain in quantity, so fish meal (10 percent nitrogen, 5 percent phosphorous, 0 percent potassium) was used instead.  Each maize and squash plant received 1/3 cup (1.66 scale ounces) of fish meal mixed with the soil at planting.  This is the approximate equivalent of 119 pounds of available nitrogen and 59 pounds of phosphorous per acre.  Potassium was provided in the form of wood ashes, 6 scale ounces top dressed over each hill when squash vines were transplanted = about 1/2 ton (1,000 pounds) per acre = 70 pounds of available potash per acre.  (Fertilizing crops was NOT a common practice among North American Indians.  Native farmers learned these techniques from Europeans.  For example:  In colonial times, French farmers in Normandy fertilized their fields with herring).

10-Year Maize Yield Summary:     2,997.7 pounds per acre = 1.49885 tons per acre = 53.5 bushels per acre.  Range = 1,853 to 3,960 pounds per acre = 33.08 to 70.71 bushels per acre.  Average Yield per Plant = 4.43 ounces.  1 bushel of clean, shelled corn = 56 pounds.

10-Year Bean Yield Summary:     520.8 pounds per acre = 0.2604 ton per acre = 8.68 bushels per acre.  Range = 336 to 688 pounds per acre = 5.6 to 11.46 bushels per acre.  Average Yield per Plant = 0.048 pound = 0.768 ounce.  1 bushel of clean, dried beans = 60 pounds.

10-Year Winter Squash Yield Summary:     7,293.6 pounds per acre = 3.6468 tons per acre.  Range = 5,412 to 8,776 pounds per acre = 2.706 to 4.388 tons per acre.  Average Fruits per Acre = 3,000.  Average Fruit Weight = 2.43 pounds = 2 pounds 6.88 ounces.  Average Yield per Plant = 10.78 pounds = 10 pounds 12.48 ounces.  Average Fruits per Plant = 4 (4.43 exactly).  Note:  Because of their size, winter squash and pumpkins are not measured in bushels.

Estimated Carrying Capacity:     A 1-acre polyculture of maize, beans, and squash with hills spaced 4 feet apart feeds 1 family (4 people) for 1 year = 2.05 pounds of corn meal per person per day + 0.3567 pound (5.7 ounces) of dried beans for each person daily + 4.99 pounds of fresh winter squash per person daily.  This is more than sufficient to support a small family, especially if rations are supplemented by hunting and gathering.

Experimental Data (Maize):     Yields are recorded in pounds of clean, air dried corn per 1/4 acre.  All numbers are rounded down to the nearest whole pound.  Hills are spaced 4 x 4 feet equidistantly.  26 rows x 26 hills within each row = 676 hills x 4 corn plants per hill = 2,704 corn plants per 1/4 acre.

Year                    Maize Yield in Pounds per 1/4 Acre

2007                    463

2008                    895

2009                    590

2010                    848

2011                    556

2012                    990

2013                    934

2014                    804

2015                    689

2016                    727

10-Year Total Yield          7,496 pounds

Average Yield                   749.6 pounds per 1/4 acre

Yield Range                      463 to 990 pounds per 1/4 acre

Average Yield per Plant = 0.2772 pound = 4.43 ounces

Experimental Data (Pole Beans):     Yields are recorded in pounds of clean, air dried beans per 1/4 acre.  All numbers are rounded down to the nearest whole pound.  Hills are spaced 4 x 4 feet, equidistantly.  26 rows x 26 hills within each row = 676 hills x 4 bean plants per hill = 2,704 bean plants per 1/4 acre.

Year                    Bean Yield in Pounds per 1/4 Acre

2007                    103

2008                    146

2009                    92

2010                    132

2011                    84

2012                    161

2013                    124

2014                    172

2015                    128

2016                    160

10-Year Total Yield          1,302 pounds

Average Yield                   130.2 pounds per 1/4 acre

Yield Range                       84 to 172 pounds per 1/4 acre

Average Yield per Plant = 0.048 pound = 0.768 ounce.

Experimental Data (Winter Squash):     Yields are recorded in pounds of fresh fruit per 1/4 acre.  All numbers are rounded down to the nearest whole pound.  Squash plants are spaced every other row and every other hill within alternate rows = 13 rows x 13 hills within each row = 8 x 8 feet apart = 169 plants per 1/4 acre.

Year                    Squash Yield in Pounds per 1/4 Acre

2007                    1,353

2008                    2,138

2009                    2,025

2010                    1,497

2011                    1,446

2012                    2,140

2013                    2,040

2014                    1,669

2015                    2,194

2016                    1,732

10-Year Total Yield          18,234 pounds

Average Yield                   1,823.4 pounds per 1/4 acre

Yield Range                      1,353 to 2,194 pounds per 1/4 acre

Average Fruits per 1/4 Acre = 750

Average Fruit Weight = 2.43 pounds = 2 pounds 6.88 ounces

Average Yield per Plant = 10.78 pounds = 10 pounds 12.48 ounces

Average Fruits per Plant = 4 (4.43 exactly)

Commentary:     Traditional polycultures of corn, beans and squash are not commercially practical because planting and harvest cannot be mechanized.  Fish meal fertilizer is also un-economic because it costs more ($0.72 per pound) than most chemical or organic plant foods.  Planting nitrogen-fixing cover crops and sowing seeds in rows is far less expensive than traditional hill cultivation.

Strip cropping combines the ecological advantages of polycultures with the economic efficiency of farm machinery.  Plant narrow strips of cash crops following land contours.  (Adjust strip width to fit farm equipment).  Seed or transplant unrelated crops on adjacent strips to take advantage of edge effects.  Planting multiple species on each field increases biodiversity and greatly reduces crop pests.

Related Publications:     No-Till Hungarian Stock Squash; 2012 Tomato and Sweet Potato Polyculture Trial; and The Edge Effect.

Other Articles of Interest:     Crop Rotation Primer; Biblical Agronomy; The Twelve Apostles; “Can Sunnhemp Outgrow Morning Glory?”; Worm Farming; Managing Weeds as Cover Crops; Weed Seed Meal Fertilizer; Trash Farming; Earthworm Primer; Planting Maize with Living Mulches; Living Mulches for Weed Control; Upside Down Potatoes; and Crops Among the Weeds.

Would You Like To Know More?     Please contact the Author directly if you have any questions or need additional information about modern or traditional polycultures.  Please visit:     http://www.worldagriculturesolutions.com  — or —  send an e-mail to:  http://www.worldagriculturesolutions@gmail.com  — or —  send a letter to:  Eric Koperek, Editor, World Agriculture Solutions, 413 Cedar Drive, Moon Township, Pennsylvania, 15108 United States of America.

About the Author:     Mr. Koperek is a plant breeder who farms in Pennsylvania during summer and Florida over winter.  (Growing 2 generations yearly speeds development of new crop varieties).