Asian Journal of Bio Science

Abstract

Biology of diamondback moth, Plutella xylostella was studied under protected natural and laboratory condition on mustard crop. Oviposition period 4.5±0.38 days of Plutella xylostella in field condition while, 6.5±0.41 days in laboratory condition. It passed through four instar, the larval periods are 9.5±0.36, 16.5±0.41, 7.5±0.79 and 7.5±0.72 days, respectively. The pupal period ranged from 10.0±1.58 days. Adult longevity of males and females 12.5±1.11 and 20.0±1.00 days in field condition. In laboratory condition the larval periods ranged from 5.0±0.55, 3.5 ±0.60, 4.0±0.45 and 3.5±0.85 days and the pupal period ranged from 4.50±1.11 days. The adult longevity of males and females 8.0±0.70 and 11.0±0.82 days. The life period of males and females 64.5±5.02 and 72.0±5.09 days in field condition while, in laboratory condition 32.5±4.03 and 35.5±4.32 days.

Keywords

Full Text