While both organic and conventional growers use manure I personally know of no organic producers that use manure from CAFOs(Concentrated Animal Feeding Operations)or factory farms where high doses of antibiotics are given to the animals as a matter of course whether they're ill or not. While there is nothing in this article specifically stating so, I can say with a high degree of confidence that vegetables grown on fields with manure from organically raised animals will not have this problem.
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original-scienceagogo12 July 2007
Antibiotics Absorbed By VegetablesEvaluating the impact of livestock antibiotics on the environment, University of Minnesota researchers have found that many vegetables uptake the antibiotics. The study, in the Journal of Environmental Quality, shows that food crops can readily accumulate antibiotics from soils spread with cattle manure.
The findings were based on a greenhouse study involving three food crops: corn, lettuce, and potatoes. The plants were grown in soil modified with liquid hog manure containing sulfamethazine, a commonly used veterinary antibiotic. The researchers found that the antibiotic was taken up by all three crops.
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