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.
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Madras
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Tamil Nadu Agricultural University
Coimbatore - 641 003
Tamil Nadu, India.
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Madras Agricultural Journal (MAJ)
Madras
Agricultural Students Union
Tamil Nadu Agricultural University
Coimbatore - 641 003
Tamil Nadu, India.
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