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Health and Safety
Herbicide Carryover

Herbicide Carryover in Manure and Hay: Caution to Organic Farmers and Home Gardeners
by Jeanine Davis, North Carolina Extension Horticultural Specialist, June 2009
There have been a number of reports from organic farmers and home gardeners of damage to
vegetables following compost application. The symptoms exhibited are twisted, cupped, and elongated leaves; misshapen fruit; reduced yield; death of young plants; and poor seed germination. One possibility for the source of this crop injury is the presence of certain herbicides in manure and compost.