Division of Entomology, Faculty of Agriculture, Sher-e-Kashmir University of Agricultural Sciences and Technology, Main Campus, Chatha, Jammu, 180 009, India
The biological studies on Plutella xylostell revealed that after mating period of 69.9±2.58 min. and laid eggs 3.1±0.16 days after mating. Single female laid on an average of 45.11±2.31 eggs during an oviposition period of 4.8±0.24 days. The post oviposition period was recorded 5.5±0.34 days. The pre-pupal and pupal period lasted for 1.20±0.13 and 4.6±0.37 days, respectively. The larvae passed through four instars and total larval developmental period from egg to adult emergence varied from 21.5±1.10 days. Longevity of adult male was 7.0±0.25, while for female it was 11.8±0.44 days.
Biology, Brassica oleracea, Plutella xylostella.
