EVALUATION OF SEX-PHEROMONE COMPONENTS OF RICE LEAF FOLDER, CNAPHALOCROCIS-MEDINALIS GUENEE

Different blends of (Z)-13-18:AC, (Z)-11-16:AC and (Z)-13-18:OH were e valuated for the pheromonal activity to rice leaf folder, Cnaphalocroc is medinalis under field conditions. Mixture of (Z)-13-18:AC and (Z)-1 1-16:AC in the ratio of 10:1 was pheromonally active and captured rela tively larger number of male moths than traps baited with two Virgin f emales. Addition of (Z)-13-18:OH to the mixture reduced the trap captu re. Polythene vial dispensers were superior to rubber septa.