Caution: Herbicide Carryover

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Caution to Hay Producers, Livestock Owners, Farmers, and Home Gardeners

Certain herbicides can remain active in hay, straw, grass clippings, manure, and compost. They can damage vegetables, fruits, flowers, and other crops. The damage can be poor seed germination, death of young plants, cupping or twisting of leaves, misshapen fruit, or reduced crop yields. Read about this important issue by clicking on the title of this publication. If you have questions, contact the authors: or

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Herbicide Carryover in Hay, Manure, Compost, and Grass Clippings

Many farmers and home gardeners have reported damage to vegetable and flower crops after applying horse or livestock manure, compost, hay, or grass clippings to the soil. The symptoms reported …