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https://blogs.scientificamerican.com/science-sushi/httpblogsscientificamericancomscience-sushi20110718mythbusting-101-organic-farming-conventional-agriculture/

• Sohcahtoa82 7y ago
  Thank you for this. Come to think of it, I do seem to recall at one point reading about organic farming using "natural" pesticides and ending up needing to use more of them because they're less effective.