Field efficacy of new insecticide molecules against Spodoptera frugiperda (J.E Smith) and dissipation studies
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Authors
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Supriya G B
Department of Entomology, College of Agriculture, Professor Jayashankar Telangana Agriculture University, Rajendranagar, Hyderabad - 500030, Telangana, India.
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G Sridevi
AINP on Pesticide Residues, Professor Jayashankar Telangana Agriculture University, Rajendranagar, Hyderabad - 500030, Telangana, India.
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T Uma Maheswari
Department of Entomology, College of Agriculture, Professor Jayashankar Telangana Agriculture University, Rajendranagar, Hyderabad - 500030, Telangana, India.
Keywords:
S. frugiperda, new insecticides, spinetoram, indoxacarb and spinosad.Abstract
A field trial of new insecticides was carried out against fall armyworm in maize during rabi, 2019-20 and 2020-21 at the College farm and studies on dissipation of selected insecticides were conducted at Pesticide Residues Laboratory, AINP on Pesticide Residues, PJTAU, Rajendranagar, Hyderabad. The bio-efficacy studies revealed that spinetoram was the most effective insecticide against S. frugiperda with 97.61 per cent reduction in population followed by indoxacarb (91.09%), spinosad (71.43%), emamectin benzoate (60.21%) and chlorantraniliprole (55.56%). The studies on dissipation pattern of selected insecticides in immature maize cobs revealed that indoxacarb persisted for 1.05 days while spinetoram dissipated below the limit of quantification (10 ppb), 2hrs after spraying.
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Manuscript will be accepted on the understanding that their content is original and that permission has been received in writing wherever necessary to produce previously published material (including quotations, data and illustrations) and that the manuscript has not been submitted/ accepted for publication elsewhere. Copyright resides with the Plant Protection Association of India.