Vol. 10, Special Issue 10 (2021)

Author(s):
Priti Priya and Rabindra Prasad

Abstract:
In order to develop rice cultivars for resistance to leaf folder, Cnaphalocrosis medinalis (Guenee) some rice genotypes were screened under natural field conditions at the rice research farm of Birsa Agricultural University, Kanke, Ranchi during kharif 2018. Leaf folder incidence as percent leaf damage was recorded on 30, 40, 50, 60, 70, 80, 90 and 100 days after transplanting and scoring was done. Based on the resistance index and population, the experimental results revealed that genotypes Sinna Sivappu, MSM-3, MTU 1245, Suraksha, RP-2068-18-3-5, MSM-1, MSM-2, W1263, KAUPTB 0627-2-11-14-15 and Kavya were found promising and resistant against the leaf folder, receiving damaged leaves below 10 percent whereas remaining cultures except TN-1 were moderately resistant receiving (11-20% LDLF), TN-1 was moderately susceptible receiving the highest incidence of leaf damaged percent i.e. (20.82% LDLF) in the present studies. W-1263 could be responsible for realization of the highest grains yield (44.00 q/ha) among all the tested rice genotypes in the present studies.