Abstract
Present investigation was carried out during summer and rainy seasons under laboratory conditions at the Department of Sericulture, Chintamani UAS (B) during 2012-13. Rearing of bivoltine silkworm hybrid CSR2 X CSR4 in different seasons reveals that rainy season open rearing is found to be susceptible for Uzi infestation as compared to summer season under protected and open rearing. Uzi fly incidence on top position tray was observed significantly maximum in rainy season open rearing as compared to summer season open batch and least observed in summer season protected rearing. Longevity of the uzi fly is reported to be negatively correlated with weather parameters such as temperature; higher the temperature lower the adult longevity. Experimental observation revealed that rearing of silkworm in summer with all the precautionary measures under protection is suitable for more yield of cocoon with least uzi fly infestation in Karnataka.
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