Department of Agricultural Entomology, University of Agricultural Sciences, Raichur-584 102, Karnataka
Online published on 12 August, 2013.
Among different hybrids of Bt cotton, Brahma recorded least number of mirid bugs (1.72 bugs/5 squares/plant) followed by VICH 303 (1.80 bugs/5 squares/plant), while non Bt hybrid DCH-32 recorded high incidence of 3.84 bugs/5 squares per plant. Mirid bug incidence was found to be high on genotypes which had higher trichome density, and hence the hairy varieties NCS-145, MRC-7351 and Tulsi-144 might have been prone to mirid attack as compared to glabrous varieties like Brahma, VICH-303 and RCH-530.
Bt, Mirid bug, Poppiocapsidea biserratense, trichome, Hemipteraand Miridae
