Understanding Natural, Chemical, and Organic Weed Killers
Organic weed controls must be produced from a list of allowed synthetic substances, or come from all-natural substances that are not prohibited. The National Organic Program (NOP) is administered by the USDA and includes a list of national organic standards, a list of allowed and prohibited substances, and a regulatory oversight structure. Generally, these products are clearly marked on the label as being certified organic.
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