STUDIES ON THE MANAGEMENT OF CUTWORM, Spodoptera exigua (Hubner) ON CHICKPEA
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Date
2017-07-30
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University of Agricultural Sciences Raichur
Abstract
Investigations carried out on various aspects of management of cutworm, Spodoptera
exigua on chickpea, at main Agricultural Research Station Raichur during 2016-17. Revealed
that varying level of larval population and foliage damage on chickpea crop among 50 genotypes
screened along with A-1 (check) recorded foliage damage in the range of 11 to 50 per cent.
Evaluation of efficacy of different poison baits under laboratory condition indicated that poison
bait with spinosad was the best treatment followed by poison bait with cypermethrin and poison
bait with lambda cyhalothrin however among biorationals Nomuraae rileyi treated poison bait
was the best. Studies under field condition on the efficacy of different poison baits spinosad
treated poison bait recorded highest yield (12.33 q ha-1 ) followed by lambda cyhalothrin (11.56
q ha-1) and cypermethrin (11.06 q ha-1) similarly poison bait with N. rileyi recorded highest yield
among biorationals. Field trial on efficacy of biorationals and insecticides indicated spinosad as
the best treatment (12.02 q ha-1) followed by cypermethrin (11.53 q ha-1) and lambda cyhalothrin
(10.57 q ha-1) N. rileyi recorded highest efficacy and yield (10.05 q ha-1) followed by B.
thuringiensis (9.80 ha-1).
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