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"When the planes still swoop down and aerial spray a field in order to kill a predator insect with pesticides, we are in the Dark Ages of commerce. Maybe one thousandth of this aerial insecticide actually prevents the infestation. The balance goes to the leaves, into the soil, into the water, into all forms of wildlife, into ourselves. What is good for the balance sheet is wasteful of resources and harmful to life"
Paul Hawkin "ecology of commerce" |
The Health of our Soil
Organic agriculture builds the health of the soil, providing the foundation for healthy crops and a livelihood for good stewards of the land.
In order to be certified organic, crops must be grown on land free of prohibited substances for at least three years prior to harvest. Crops grown on land in transition to organic (during the first three years after switching from conventional farming) cannot be labeled as organic.
National organic standards require producers to use organic agricultural methods and materials that cover soil fertility, the application of manure, crop rotation, and composting. National organic standards prohibit the use of municipal solid waste and sewage sludge as compost ingredients.
Organic producers also must follow a National List of Acceptable and Prohibited Materials concerning pest control treatments, fertilizers and seed treatments that they use. All agricultural materials must be evaluated for their long-term effects on the environment and not simply whether they are synthetic or natural.
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- "Fertilization in organic systems has a positive effect on the content of organic matter and helps to avoid soil acidification;"
- "Organic soil management improves soil structure by increasing soil activity, thus reducing the risk of erosion;"
- "Organic management promotes the development of earthworms and above ground arthropods, thus improving the growth conditions of the crop. More abundant predators help to control harmful organisms (pests);"
- "Organic crops profit from root symbioses and are better able to exploit the soil;"
- "Organic fields accommodate a greater variety of plants, animals and microorganisms."
-Organic methods are as efficient, economical and financially competitive as conventional methods, and better for the soil and the environment, according to a report documenting 15 years of findings from The Rodale Institute's long-term Farming Systems Trial™. The experiment covers 12 acres and compares highly productive, intensive corn/soybean systems under conventional and organic management. The experiment demonstrates that after a transitional period of about four years, crops grown under organic systems yield as well as, and sometimes better than, those grown conventionally. In years of drought, organic systems can actually out-produce conventional systems. Specific findings:
- "Organically managed soils achieve better physical structure. Soils in the organic systems gradually became looser and more porous, and absorbed and held water better than conventionally managed soils.
- The organic soils "had reduced levels of nitrate leaching compared to the conventional soils and were more effective as a carbon sink."
- "Water is able to percolate into the organically managed soils at a faster rate. During rain storms, more water will be absorbed into the soil and less will run over the surface and out of the field."
- "As measured by soil respiration rates and available or potentially available nitrogen levels, both of the organic systems indicate higher levels of microbial activity than the conventional system. Potentially more significant, the organic and conventional systems have differences in the species composition of microorganisms."
- "Both organic systems showed significant ability to absorb and retain carbon, raising the possibility that agricultural practices might play a role in reducing the impact of global warming."
Source: The Rodale Institute Farming Systems Trial™: The First 15 Years, by Cass Petersen, Laurie E. Drinkwater, and Peggy Wagoner, the Rodale Institute, 1999.
-A 1987 study that compared adjoining organic and chemically treated wheat fields in Washington State found that the organic fields had eight more inches of topsoil than their chemical neighbors and only one-third the erosion loss.
Source: Donella H. Meadows, "Our food, our future," in Organic Gardening, September/October 2000.
-One teaspoon of compost-rich organic soil hosts 600 million to 1 billion helpful bacteria from 15,000 species. One teaspoon of chemically treated soil can host as few as 100 bacteria. Source: Elaine R. Ingham, soil scientist, Oregon State University, in "Our food, our future," by Donella H. Meadows, in Organic Gardening, September/October 2000.
-It takes approximately 3,000 years for nature to produce 6 inches of topsoil. Every 28 years, 1 inch of topsoil is lost as a result of current farming practices. Organic biointensive farming can produce 6 inches of topsoil in as little as 50 years—60 times faster than the rate in nature. Source: Maine Organic Farmer & Gardener, 1999, in "Our food, our future," by Donella H. Meadows, in Organic Gardening, September/October 2000.
-The way manure is stored makes a big difference in terms of the effects it has on the soil. Studies have shown, for instance, that composted manure makes it decompose more slowly, thus releasing nitrogen more slowly in the soil. Thus, it becomes more of a soil builder. About 25 percent of the dry matter from composted cow manure is in the form of ligno-proteins, a marriage of lignins and proteins. As a result, it is very stable, and decomposes slowly.
Source: Walter Goldstein, research director at the Michael Fields Agriculture Institute, in a talk, "Healthy Soils, healthy Roots: Part 2," given at Upper Midwest Organic Farming Conference, March 2000, LaCrosse, WI, as published in the November-December 2001 issue of The Organic Broadcaster.
Organic Trade Association, July 2002
*****Information shared courtesy Sage Creek Naturals*****
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