Population fluctuation of leaf hopper under different treaments in early and main crop of potato

Potato leaf hopper (Empoasca fabae Harris) is a serious pest of potato as even relatively low numbers of leaf hopper can cause a significant yield reduction. In early crop of potato, 2 sprays of monocrotophos 36EC (0.01%) at fortnight interval were found most effective against potato leaf hopper, while in main crop of potato lmidacloprid (Confidor, 200SL, 0.02%) was found effective. Population of leaf hopper in main crop continued to build up from November till 3^rd week of December and afterwards started declining with continuous decrease in atmospheric temperature.