Performance of insecticides with different pH and TDS level of water against leafhopper Empoasca Kerri Pruthi on greengram

Abstract

An experiment entitled “Performance of insecticides with different pH and TDS level of water against major insect pests of greengram” was conducted during kharif 2024-25 at Seed Technology Research Unit, Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola to study the effect of water pH, TDS and Electrical conductivity on bio efficacy of insecticides against major pests of greengram. The experiment was laid out in Factorial Randomized Block Design (FRBD) with three replications and nine treatments. The treatment details of the experiment, spraying insecticides with Acidic, Neutral and Alkaline water. The respective TDS and Electrical conductivity of Acidic, Neutral and Alkaline water were (358 ppm), (531 ppm), (691 ppm) and (0.53 dS/m), (0.83 dS/m), (1.08 dS/m). The population of leafhopper observed lowest in the treatment of Quinalphos25% EC followed by Spinetoram 11.7% SC and Chlorantraniliprole 18.5% SC. Among water pH levels, the population of leafhopper was lowest in the treatment of Acidic water (7 pH) it was at par with Neutral water (7pH) and maximum population was recorded in Alkaline water (9 pH). In interaction effect, insecticides in acidic and neutral water more effective for management of leafhopper.