Organic farming

Posted: 14 September 2000

Production system that avoids or largely excludes the use of synthetically produced fertilizers, pesticides, growth regulators, and livestock feed additives. As far as possible, it relies on crop rotations, crop residues, animal manures, legumes, green manures, off-farm organic wastes, and aspects of biological pest control to maintain soil productivity and tillage, to supply plant nutrients, and to control insects, weeds, and other pests.