Author(s): Gandrakoti Ramadevi and Ashwani Kumar

Abstract: The field experiment was conducted in kharif season of 2023-2024 at Central Research Farm (CRF), SHUATS, Uttar Pradesh, India. The experiment was laid in Randomized Block Design with eight treatments each replicated thrice viz., Imidacloprid 17.8%SL (T₁), Azadirachtin 00.03% EC (Neem oil) (T₂), Emamectin benzoate 5%SG (T₃), Spinosad 45% SC (T₄), Nisco sixer plus (T₅), Chlorpyriphos 50%+ Cypermithrin 5% EC (T₆), Profenofos 40% + cypermethrin 4% EC (T₇) and control plot (T₈). The data on larval population of Chilo partellus after first and second spray revealed that all the treatments were significantly superior over control. Among all treatments, Profenofos 40% + cypermethrin 4% EC (5.13 and 2.17) recorded lowest larval population of Chilo partellus after both sprays followed by Chlorpyriphos 50%+ Cypermithrin 5% EC (5.48 a n d 2. 60), Spinosad 45% SC (6.04 and 2.97), Imidacloprid 17.8%SL (6.33 and 3.37), Emamectin benzoate 5% SG (6.73 and 3.77), Nisco sixer plus (7.13 and 4.17), Azadirachtin 00.03%EC (Neem oil) (7.53 and 4.62) was the least effective among all treatments respectively. While, the highest yield 60.56q/ha was obtained from the treatment Profenofos 40% + Cypermethrin 4% EC as well as C:B ratio 1:2.74 followed by Chlorpyriphos 50%+ Cypermethrin 5% EC (49.32 and 1:2.23), Spinosad 45% SC (42.3 and 1:1.92), Imidacloprid 17.8%SL (41.4 and 1:1.86), Emamectin benzoate 5% SG (40.29 and 1:1.85), Nisco sixer plus (37.5 and 1:1.69), Azadirachtin 00.03%EC (Neem oil) (36.26 and 1:1.68) and c o n t r o l (25.4 and 1:1.24).

DOI: 10.33545/26174693.2024.v8.i6c.1298