Effectiveness of bed disinfectants on silkworm diseases and cocoon yield under tropical conditions of Kolar district, Karnataka

Abstract

The impact of bed disinfectants for successful cocoon harvest and crop stability was successfully demonstrated in the farmer’s field during 2014-15. The study revealed that, application of Ankush vijetha green and slaked lime powder combination (T3) bed disinfectant was recorded low incidence of silkworm diseases like grasserie (0.10 – 0.08 %), flacherie (0.25 – 0.15%) and muscardine (0.05 – 0.35%) and lower defective cocoon percentage viz., stained cocoons (0.10 – 0.10 %), flimsy cocoon (0.30 – 0.04%) and uzi pierced cocoon (0.80 - 0.30 %) during post rainy and rabi seasons respectively. Further, single cocoon weight (1.821 g), shell weight (0.340 g), pupal weight (1.456 g), shell percentage (18.75 %), filament length (851.13 mtrs) and cocoon yield (81.10 kg/100 dfls) were recorded high in T3 compared to application of bundh powder (T1).