Research Article
Effects of Temperature and Relative Humidity on the Life Table of Pieris brassicae (Linnaeus) (Lepidoptera: Pieridae) on Cauliflower
Author(s): Deep Shikha*
Pieris brassicae, the large cabbage white butterfly, has emerged as a serious pest of cauliflower in India, considering basic studies on its development and survival at different temperatures (17.5 ± 7.5, 20 ± 10, 22.5 ± 12.5, 25 ± 15, 27.5 ± 17.5, 30 ± 20 and 32.5°C ± 22.5°C) at constant Relative Humidity (RH) of (65 ± 5%) level and photoperiod of 14:10 (Light: Dark) to ascertain optimal population growth during 2021 and 2022. A life table was constructed using temperature, humidity and photoperiod. The immature stages duration was 92.61 ± 0.99 days at 17.5°C ± 7.5°C and 65 ± 5% RH, but shortened to 25.25 ± 0.35 days at 32.5? ± 22.5? at same RH. Adult longevity of male and female was 12.30 ± 0.07 and 14.12 ± 0.04 days at 17.5°C ± 7.5°C and 65% RH.. Read More»
