Vol. 11, Special Issue 9 (2022)

Author(s):
Rashmi Vishwakarma, SB Das, Shrikant Patidar, Shraddha Mohanta and VK Paradkar

Abstract:
The fall army worm, Spodoptera frugiperda (J.E. Smith, 1797) is a polyphagous insect pest that damages several field crops including corn, sorghum, cotton and soybean in many parts of the world. In this study, the effect of 8 maize genotypes on biological and morphometric parameters of S. frugiperda was studied under laboratory conditions. The results showed that the longest larval and pupal period and adult longevity were observed on genotype JM-218 (14.24, 9.99 and 36.65 days, respectively), while it was shortest on CHH-213 (11.47, 9.01 and 33.28 days, respectively). Significant differences were observed in head capsule width, body length and width of different larval instars. Based on these parameters, JM-218 and CHH-213 were found to be least and highly suitable genotypes for the insect development.