Vol. 7, Issue 8, Part A (2025)

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 green-gram. 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 Spinetoram11.7%SC and Chlorantraniliprole18.5%SC. Among water pH, TDS and EC levels, the minimum leafhopper population was observed in the acidic water treatment (pH 7, TDS 358 ppm, EC 0.53 dS/m), which was at par with the neutral water treatment (pH 7, TDS 531 ppm, EC 0.83 dS/m). Whereas, the highest leafhopper population was recorded under the alkaline water treatment (pH 9, TDS 691 ppm, EC 1.08 dS/m). In interaction effect, insecticides in acidic and neutral water treatment were more effective for management of leafhopper.