Vol. 13, Issue 1 (2024)

Author(s):
Pratibhaben P Konkani and Karishmakumari R Rathod

Abstract:
The studies on biology of Spodoptera litura (Fabricius) of castor (Ricinus communis L.) were carried out during 2015-16. Egg measured on an average 0.42 ± 0.07 mm with an average incubation period of 3.80 ± 0.79 days. The total larval duration ranged from 14 to 18 days with an average 15.80 ± 1.56 days. The duration of pre-pupa on an average 1.60 ± 0.50 days. The pupal duration on an average 6.12 ± 0.83 days. The pre-oviposition period, oviposition period and post-oviposition period was on an average with 1.56 ± 0.51, 6.72 ± 1.06 and 2.00 ± 0.71, respectively. The egg laying capacity of female on an average 2101.67 ± 402.76. The egg hatching on an average of 90.01 ± 4.09 per cent. The longevity of female on an average of 9.44 ± 1.04 days while longevity of male on an average 8.56 ± 0.96 days. The sex ratio of male to female was 1: 3. Total life cycle of male on an average of 32.28 ± 1.93 days and in case of female with an average of 34.32 ± 2.59 days.