Effect of novel insecticide molecules in mulberry on reeling parameters of silkworm Bombyx mori L. cocoons

Abstract

Effect of novel insecticides treated mulberry leaves on the reeling performance of silkworm Bombyx mori L were studied. The cocoon filament length was longest in untreated control and in the insecticide treatments viz., dinotefuron 20 SG @ 0.25 g/l, dichlorvos 76 EC @ 2.63 ml/l at different time intervals of 10, 20, 30 Days After Spraying. Lowest filament length was recorded when flonicamid 50WG sprayed @ 0.3 g/l and 20, 30 and 40 DAS. This was followed by azadirachtin 1 % @ 1 ml/l recording shorter filament length at 40 DAS. However, at 10 and 20 DAS azadirachtin 1 % @ 1 ml/l recorded longest cocoon filament which were on par with untreated control. At 10 DAS, filament denier across all the treatments was on par with each other except in the treatments dinotefuron