Harvest Time Residues of Spirotetramat in Cotton

B. Vinoth Kumar and S. Kuttalam

doi:https://doi.org/10.29321/MAJ.10.100145

Madras Agricultural Journal

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Harvest Time Residues of Spirotetramat in Cotton

Author: B. Vinoth Kumar and S. Kuttalam,

p-ISSN: 0024-9602, e-ISSN:2582-5321, Vol: 99, Issue: jul-sep,

DOI:https://doi.org/10.29321/MAJ.10.100145

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Abstract

Two field studies were conducted to assess the harvest time residues of spirotetramat on cotton at TNAU, Coimbatore during 2006 and 2007. Spirotetramat was sprayed thrice at fifteen days interval at 75 and 150 g a.i. ha -1 . Samples of seed, lint and oil were extracted with acetonitrile: water (80:20 v/v, containing 0.22 ml formic acid l -1 ). The results revealed that the harvest time residues of spirotetramat were below detectable level (BDL) in cotton lint, seed, oil and soil samples in both the field experiments.

Keywords: Spirotetramat, Cotton, Residues, HPLC, Kapas

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