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procymidone

n. A pesticide often used for killing ferns and nettles.

Wikipedia
Procymidone

Procymidone is a pesticide. It is often used for killing unwanted ferns and nettles, and as a dicarboximide fungicide for killing fungi, for example as seed dressing, pre-harvest spray or post-harvest dip of lupins, grapes, stone fruit, strawberries. It is a known endocrine disruptor ( androgen receptor antagonist) and to interfere with the sexual differention of male rats. It is considered to be a poison.