Studies on symptomological and economic parameters of silk cocoons of Bombyx mori inoculated with Beauveria Bassiana (Bals.) Vuill.

Beauveria bassiana infection influenced the growth and development of silkworm larvae and ultimately the economical cocoon characters like matured larval weight, cocoon weight, shell weight, shell percentage, filament length, non-breakable filament length, number of breaks and denier. Significant reduction of matured larval weight (2.08 g), cocoon weight (0.72 g), shell weight (0.09 g), shell ratio (12.80%), filament length (478.9 m), non-breakable filament length (120.8 m) and more number of breaks (4.1) and higher denier (2.62 d) was recorded in the experimental silkworm compared to control.