COMPARATIVE EFFICACY OF SYNTHETIC AND BOTANICAL INSECTICIDES AGAINST SUCKING INSECT PEST AND THEIR NATURAL ENEMIES ON COTTON CROP
2016
The Synthetic and botanical insecticides are relatively
saferfor environment and
beneficial insects. The study was conducted in Rahim Yar Khan during the cotton cropping season 2014 to evaluate the comparative efficacy of two Synthetic insecticides i.e.
Nitenpyram(Jasper 10% SL) and
Pyriproxyfen(Bruce 10.8% EC) and two botanical extracts of Calotropic
proceraand
Azadirachtaindica, against sucking insect pest complex of cotton and their natural enemies. Upon reaching
economic thresholds, the recommended field doses of all the insecticides were applied on cotton cultivar MNH-886. Data against sucking pests and their natural enemies was recorded 24 hours prior to insecticidal application and then 24, 48, 72 and 96 hours after insecticidal application. Results revealed that
Nitenpyramwas much toxic against sucking pests followed by
Pyriproxyfenas compared to two botanical extracts. On the other hand, the synthetic insecticides did not prove
saferfor natural enemies as compared to botanical extracts. It was concluded that as an
Integrated Pest Management(IPM) strategy, botanical extracts can be used at low infestation levels so that ecosystem service of biological control may be sustained.
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