Natural Parasitization of Sugarcane Leaf Hopper, Pyrilla perpusilla (Walk.) in Uttarakhand

The experiment on natural parasitization of sugarcane leaf hopper, Pyrilla perpusilla was conducted at Crop Research Center of G.B. Pant University of Agriculture and Technology, Pantnagar. The maximum number of egg mass, nymph and adult per leaf of pyrilla observed was 6.67, 22.67and 18.00 on 30th, 30th and 15th August, respectively. The highest parasitization of eggs masses by Tetrastichus pyrillae was observed in the month of October i.e. 85.33% indicating peak activity of parasitoid. The maximum population of egg, pupa and adult/ leaf of E. melanoleuca were 8.00, 27.33 and 18.67 on 30th Sept., 30th Oct. and 15th of Oct., respectively.