Metabolism and Biotransformation of Pesticides

Piperonyl butoxide has been used to synergize both OPs and carbamates, but has proved most valuable in prolonging the action of pyrethrum, a derivative of Chrysanthemum cineraraefolium. Pyrethrum has a very rapid knock-down action which is invaluable (for example, in formulating anti-wasp insecticides). ................
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