Screening of okra genotypes against shoot and fruit borer, Earias vittella (Fab.) in Gwalior (Madhya Pradesh)

Abstract

An experiment was conducted at Agriculture entomology research farm, College of Agriculture, RVSKVV, Gwalior, Madhya Pradesh during kharif season 2015-16 and 2016-17 taken to know the infestation of okra shoot and fruit borer, Earias vittella (Fab.) on okra. Sixteen okra genotypes viz., 326-10-1, 633-7-1, IC – 140206, IC – 282280, 303- 10- 1, 461-10-1, IC- 43742, 419-10-1, 599-8-1, IPM-20-16-39, 1753, IC- 288892, 304-10-1, 100-10-1, 231- 10-1 and VRO-22 were screened to know their response on the basis of fruit damage scale. Only two genotypes viz., IC – 282280 and 303- 10- 1 showed tolerant, remained genotypes were falled in the category of moderately resistance, However, the IPM-20-16-39 showed minimum fruit damage with highest yield 32.29 q/ha, while, IC – 282280 genotype showed highest no. of fruit damage and fruit weight damage and it exhibited lowest health fruit yield 16.77 q/ha was noticed during 2015-16 and 2016-17. The peak borer infestation (24.50%) was recorded during fourth week of September.