Madras Agricultural Journal
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Persistent Toxicity of Imidacloprid 17.8 SL to Aphids and Leafhoppers on Cotton

Abstract

Experiments were conducted to assess the effect of imidacloprid 17.8 SL as foliar application against aphids and leafhoppers on cotton. The results revealed that cent per cent mortality of aphids was observed upto 7 and 9 days after treatment (DAT) and it was upto 9 and 11 DAT for leafhoppers, when imidacloprid 17.8% SL was applied at 25 and 50 g a.i./ha, respectively. The chemical persisted for 29 days at 50g a.i./ha and 25 days at 25g a.i./ha against aphids and 31 days at 25 and 50 g a.i./ha against leafhoppers

Keywords: Cotton, Aphis gossypii, Amrasca biguttula biguttula, imidacloprid, persistence

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Madras Agricultural Students Union
Tamil Nadu Agricultural University
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Tamil Nadu, India.

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Madras Agricultural Students Union
Tamil Nadu Agricultural University
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Tamil Nadu, India.

ISSN : 0024-9602
eISSN : 2582-5321

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