Ecology, Environment and Conservation Paper

Vol.11, Issue 3,4, 2005; Page No.(415-417)

DETOXIFICATION OF LINDANE5 CHLORPYRIFOS AND QUINALPHOS BY SOME PHYSICAL METHODS

H.K. Senapati, B.B. Beheri-.7 and P.K. Saniant

Abstract

A pot culture experiment was conducted during 1998 taking cowpea as the test crop. The pesticides like linclane, chlorpyrifos and quinalphos were applied to the soil at recommended dose of 1.0, and 0.5 kg a.i. ha-', respectively. Some of the physical methods, like covering the soil with paddy straw and polyethylene were adopted for decontamination of the pesticides.The soil samples were collected at 0,5,10,20, and 30 days after application of the toxicant and residues of the pesticides were estimated by Gas Liquid Chromatograph(GLC).There was positive response of decontamination of pesticides by the above mentioned physical methods when compared with untreated soil. The paddy straw mulching resulted in better decontamination than the polyethylene cover.

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