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Research Article Open access CC BY 4.0

Evaluation of Novel Insecticides against Tobacco Caterpillar Spodoptera litura and Castor Semilooper Achaea janata of Castor

Keerthana, B, Chalam, M. S. V, Radhika

International Journal of Environment and Climate Change · pp. 301–313 · Published 9 Aug 2024

10.9734/ijecc/2024/v14i84351

Abstract

An experiment was conducted to evaluate the efficacy of ten insecticides viz., spinetoram 11.7 SC @ 0.5 ml l-1, cyantraniliprole 10.26 OD @ 1.2 ml l-1, chlorantraniliprole 18.5 SC @0.3 ml l-1, chlorfluazuron 5.4 EC @ 2.0 ml l-1, azadirachtin 1 EC @ 1 ml l-1, spinetoram 11.7 SC + azadirachtin 1 EC @ 0.5 ml l-1 + 1 ml l-1, cyantraniliprole 10.26 OD + azadirachtin 1 EC @ 1.2 ml l-1 + 1 ml l-1, chlorantraniliprole 18.5 SC + azadirachtin 1 EC @ 0.3 ml l-1 + 1 ml l-1, chlorfluazuron 5.4 EC + azadirachtin 1 EC @ 2.0 ml l-1 + 1 ml l-1 and quinalphos 25EC @ 2.0 ml l-1 along with an untreated control. Pooled efficacies of these treatments revealed that chlorantraniliprole 18.5 SC + azadirachtin 1 EC @ 0.3 ml l-1 + 1 ml l-1 was found to be the most effective treatment which exhibited highest efficacy against Spodoptera litura (75.26 per cent reduction over control) and Achaea janata (82.31 per cent ROC) followed by chlorantraniliprole 18.5 SC @ 0.3 ml l-1 which recorded 68.80 % and 76.15 % ROC respectively. The least per cent ROC was recorded in azadirachtin 1 EC (0.01 %) @ 1 ml l-1.

Castor Spodoptera litura Achaea janata Chlorantraniliprole 18.5 SC Azadirachtin 1 EC

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