Effect of Nitrogenous Fertilizer and Insecticides on Incidence of Leafhopper, Amrasca biguttula biguttula (Ishida) in Kharif Okra

Impact of nitrogenous fertilizer and insecticides on incidence of leafhopper, Amrasca biguttula biguttula in okra was carried out at Agronomy Farm, B. A. College of Agriculture, Anand Agricultural University, Anand during Kharif, 2015. Results of pooled over three sprays during kharif, 2015 revealed that flonicamid (0.65) was found significantly superior than rest of the insecticides. The second best insecticide was dinotefuran (1.49). Thiamethoxam (2.23) and dimethoate (2.52) were at par with each other. While different doses of nitrogenous fertilizer did not have significant impact on population development of leafhopper. The interaction between different doses of nitrogenous fertilizer and insecticides was found non-significant. It indicated that there was no any significant impact of nitrogenous fertilizers on efficacy of insecticides on leafhopper in okra.