Articles
BIO-EFFICACY OF RYNAXYPYR 20% SC (CHLORANTRANILIPROLE), A NEW MOLECULE, AGAINST EGGPLANT SHOOT AND FRUIT BORER
Article number
917_7
Pages
63 – 68
Language
English
Abstract
Field investigations were undertaken for two consecutive crop seasons to study the bio-efficacy of rynaxypyr 20% SC (Chlorantraniliprole), the only representative of a new class of insecticide, anthranilic diamide against eggplant shoot and fruit borer at Bidhan Chandra Krishni Viswavidyalaya, West Bengal, India.
Cypermethrin 10% EC at 60 g a.i./ha and cartap hydrochloride 50% SP at 350 g a.i./ha were used as standard checks.
Rynaxypyr 20% SC at 20-60 g a.i./ha significantly reduced shoot and fruit infestation by the pest compared with the untreated control and cartap hydro¬chloride 50% SP at 350 g a.i./ha, and increased the yield significantly.
However, 40-60 g a.i./ha dosages of the insecticide showed better performance and gave significantly higher yields than the lower dosages, and to some extent with cypermethrin 10% EC at 60 g a.i./ha.
Cartap hydrochloride 50% SP at 350 g a.i./ha showed higher percentages of fruit damage than the control.
Considering the bio-efficacy of the insecticide and yield of egg plant, rynaxypyr 20% SC at 40 g a.i./ha is suggested for effective management of egg plant shoot and fruit borer.
Rynaxypyr 20% SC at different dosages did not cause any significant reduction in the predatory fauna present on the eggplant ecosystem.
This insecticide, even at a dosage of 300 g a.i./ha, did not produce any phytotoxicity to the treated eggplant crop.
Cypermethrin 10% EC at 60 g a.i./ha and cartap hydrochloride 50% SP at 350 g a.i./ha were used as standard checks.
Rynaxypyr 20% SC at 20-60 g a.i./ha significantly reduced shoot and fruit infestation by the pest compared with the untreated control and cartap hydro¬chloride 50% SP at 350 g a.i./ha, and increased the yield significantly.
However, 40-60 g a.i./ha dosages of the insecticide showed better performance and gave significantly higher yields than the lower dosages, and to some extent with cypermethrin 10% EC at 60 g a.i./ha.
Cartap hydrochloride 50% SP at 350 g a.i./ha showed higher percentages of fruit damage than the control.
Considering the bio-efficacy of the insecticide and yield of egg plant, rynaxypyr 20% SC at 40 g a.i./ha is suggested for effective management of egg plant shoot and fruit borer.
Rynaxypyr 20% SC at different dosages did not cause any significant reduction in the predatory fauna present on the eggplant ecosystem.
This insecticide, even at a dosage of 300 g a.i./ha, did not produce any phytotoxicity to the treated eggplant crop.
Authors
S.K. Mandal, N. Karam , A. Das
Keywords
anthranilic diamide, insecticide, control, phytotoxicity, predatory fauna
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