Management of Potato Cutworm, Agrotis ipsilon (Hufnagel) in Assam

Field experiments were conducted to evaluate the effectiveness of three different modules to manage cutworm, Agrotis ipsilon in potato. The module II comprising soil application of imidacloprid 200 SL @ 48 g a.i. ha⁻¹ + one spray of NSKE 5 mL L⁻¹ + gram bait was found to be significantly superior over the other modules except I (soil application of chlorpyriphos 20 EC @ 400 g a.i. ha⁻¹ + one spray of NSKE 5 mL L⁻¹ + gram bait) in terms of both per cent hulm cut and tuber damage. Module II recorded the lowest hulm cut (10.09%) and tuber damage based on weight (7.61%) as well as number (8.96%). The highest yield was recorded in module II (112.2 q ha⁻¹) followed by module I (111.02 q ha⁻¹), both being at par. However, the highest benefit: cost ratio was registered in module I (3.21) followed by module II (3.12) and module III (2.25).