Varietal resistance against Sitophilus Oryzae in rice

Fifteen varieties/genotypes were screened against the rice weevil Sitophilus oryzae (L.) during 2018–19 at the Biological Control Laboratory and P.G. Research Laboratory, Department of Agricultural Entomology, N. M. College of Agriculture, Navsari Agricultural University, Navsari. The varieties GR-7, GNR-7 and IR-28 were observed to show maximum resistance, as indicated by minimum seed damage, weight loss, more germination and less population buildup while, the genotype GNR-4 was the most susceptible.