Efficacy of various insecticides against maize stem borer Chilo partellus (Swinhoe) and their cost-benefit analysis at Prayagraj

The present studies on the Efficacy of various insecticides against maize stem borer Chilo partellus (Swinhoe) and their cost-benefit analysis at Prayagraj were conducted during field experiment which is laid-out in randomized block design with three replications research department Entomology, Sam Higginbottom University Agriculture, Technology Sciences, Kharif season 2019-2020. Comparing seven treatments along control plot reveals that all chemical significantly superior over control. Among lowest percent infestation mean reduction was recorded Carbofuran 3G (9.09%) (60.28%) followed by Cypermethrin 25 EC (10.1%) (55.87%), Imidacloprid 200SL (11.1%) (51.46%), Bifenthrin 10 (11.78%) (48.53%), then Novaluron (12.45%) (45.60%) remaining treatment, Cartap hydrochloride 50% SP (14.14%) (38.22%) Deltamethrin 2.8 (15.15%) (33.81%) are least effective borer. yield obtained B:C shows yields among treatment significant. highest (39 q/ha) ratio (1:2.20) Which to other treatments. Next (36.44 (1:2.01), 200 SL (33.89q/ha) (1:1.89), (32.4 (1:1.63) (30.12 (1:1.63), Hydrochloride (27.83 (1:1.1.52), (24.42 (1:1.3) plot.