Author(s):

Lingam Game, Sasya Nagar and Sobita Simon

Abstract: The present investigation entitled, Comparative efficacy of selected chemical insecticides and neem products against tomato fruit borer [Helicoverpa armigera (Hubner)] in Allahabad, Were carried out during Rabi season of 2017-2018 at Central Research Farm, Sam Higginbottom University of Agriculture, Technology and Sciences, Allahabad. The seasonal incidence of fruit borer (Helicoverpa armigera) from 1st week of December (2.98% damage) that is 49th week of sowing which gradually increased. The infestation percent reached to its peak level (39.71%) at 3rd week of January. Among the data on present infestation of fruit borer after first spraying results were statistically significant. The lowest infestation of fruit borer were recorded in treatments T₃-Spinosad 45% SC (3.17%), followed by T₇-Fipronil SC (3.73%), T₄-Cypermethrin 25EC (4.19%), T₅-Quinalphos 25EC (5.29%), T₆-Indoxacarb 14.5%SC (5.44%), T₂-NSKE (10.05%), T1-Neem oil (11.23%). However all these treatments were superior over control. The maximum yield was reported in T3 Spinosad (17.43 q/ha), followed by Fipronil (16.6q/ha), Quinalphos (15.44q/ha), Cypermethrin (14.46q/ha), Indoxacarb (12.38q/ha), NSKE (13.53q/ha), Neem oil (13.32q/ha). The highest cost benefit ration was obtained from Spinosad (1:0.78).

Pages: 2215-2218  |  991 Views  407 Downloads

Download (527KB)