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Definition |
Any substance or physical agent that inhibits development and kills fungus spores and mycelium. In the United States, fungicides are governed by the 1972 federal Environmental Protection and Control Act. They must be registered with the Environmental Protection Agency and must conform to specifications. They must control the disease without injuring the plant and must leave no poisonous residue on edible crops. Antifungal drugs are approved by the FDA. (NCI)
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