"Organic farming often leads to increased food production, in many cases we have seen a
doubling of yields, which contributes to increasing the food security of a region. The cases
studies outlined in this report support the growing body of evidence that shows that yield
increases are possible and indeed likely, with a switch to organic farming in a variety of
different contexts, particularly in marginalised areas or where traditional farming methods
are used."
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'Organic farming produces the same yields of corn and soybeans as does conventional farming, but uses 30 percent less energy, less water and no pesticides, a review of a 22-year farming trial study concludes.
David Pimentel, a Cornell University professor of ecology and agriculture, concludes, "Organic farming offers real advantages for such crops as corn and soybeans." Pimentel is the lead author of a study that is published in the July issue of Bioscience (Vol. 55:7) analyzing the environmental, energy and economic costs and benefits of growing soybeans and corn organically versus conventionally. The study is a review of the Rodale Institute Farming Systems Trial, the longest running comparison of organic vs. conventional farming in the United States.
"Organic farming approaches for these crops not only use an average of 30 percent less fossil energy but also conserve more water in the soil, induce less erosion, maintain soil quality and conserve more biological resources than conventional farming does," Pimentel added.'
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"In the flood plains of Bangladesh, community-based organic agriculture resulted from an increasing awareness of the harmful effects of the Green Revolution. The latter was showing a tremendous decline in crop yields despite an enormous increase in the need to apply fertilizers and pesticides. Groundwater was less available, livestock and fish populations were diminishing, the health situation was worsening (including gastric, skin and respiratory diseases) and exogenous varieties were gradually replacing traditional varieties. This forced many poor farmers to sell their land and other productive assets, shifting from farming to non-farming occupations....In a short time approximately 3000 Sumatran farmers have begun producing organic spices for the world markets. This has led to improved socio-economic conditions for the communities while at the same time preserving biodiversity both in the national parks and in the local agro-forestry systems (garden/forest plots)."
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"The main impact has been on vegetable production. Many have doubled their yields by adopting double digging and composting techniques, using local natural methods of pest and disease control (such as planting sunflowers to attract predators, using local plant extracts to control maize stalk borer, and intercropping to reduce tomato blight). There have been big savings on pesticides, as farmers have cut out their use."
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"In the first test in the difficult Siberian climate in 1995, GROW BIOINTENSIVE growing areas averaged yields that were 286% higher than US conventional averages."
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"Crops in the GROW BIOINTENSIVE beds outstripped the traditional by 150%-200%. GROW BIOINTENSIVE yields for tomato and cabbage were 1.5 times higher. The traditional beds had to be watered twice as frequently as the GROW BIOINTENSIVE beds."
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"Barley yield is 2 ton/ha and the estimated water consumption is 179 m3/ha/season and the estimated water use efficiency is 17.98 kg/m3. These values are recognized high as compare to conventional agriculture since much less irrigation water was applied under the permaculture design system."
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'According to
Mollison, "Although the yield of a monocultural system will probably be
greater for a particular crop than the yield of any one species in a
permaculture system, the sum of yields in a mixed system will be larger."
In most cases more food is grown than can possibly be consumed on the site
by either humans or animals.'
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