NATURAL VERSES ORGANIC VERSES CONVENTIONAL LIVESTOCK
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You can find information on how to become a certified organic farm here: http://www.ams.usda.gov/services/organic-certification/faq-becoming-certified
There is more information on becoming certified organic here as well: http://www.usda.gov/wps/portal/usda/usdahome?contentidonly=true&contentid=organic-agriculture.html
The Organic Standards will describe the different pesticides, etc that are allowed and prohibited in organic farming: http://www.ams.usda.gov/grades-standards/organic-standards
Information on prohibited and allowed pesticides are available here as well: http://npic.orst.edu/reg/organic.html
Please let us know if you have any other questions!