Rakholiya TD, Khanpara AV, Bhumika Solanki and Polara RD
Author(s): Rakholiya TD, Khanpara AV, Bhumika Solanki and Polara RD DOI: https://
Abstract: Investigations on bionomics of fall armyworm, S. frugiperda (J.E. Smith) infesting maize was carried out at PG Research Lab, Department of Entomology, College of Agriculture, JAU, Junagadh. For this experiment, duration and measurement of different stages of S. frugiperda viz., eggs, larva, pupa, adult and were studied. The life cycle of S. frugiperda revealed that the number of eggs laid by female was 327.4±55.09. As far as the hatching percent and the incubation period were concerned, 81.0±5.91 percent and 2.43±0.67 days were recorded. Mean period of larval instars i.e., first, second, third, fourth, fifth, sixth was 2.56±0.49, 2.30±0.46, 2.03±0.60, 2.00±0.58, 2.40±0.61, 4.63±0.66, respectively with a total larval period of 15.93±1.48 days. Pre-oviposition, oviposition and post-oviposition periods were 4.2±0.75, 3.6±0.49 and 4.4±0.80 days, respectively. The period of pupal stage was 9.37±0.91 days. Male and female adult longevity were 8.8±1.17 and 11.6±1.02 days, respectively. Total male and female adult life span were 37.6±1.36 and 40.4±1.62 days, respectively having 1:1.72 (Male: female) of sex ratio. The morphometric data viz., larval body length; pupal length and adult body length and wing span were measured.
