author(s)
Ganesha Halikatti and SB Patil

abstract
The field experiment was carried out on optimization of spray schedule for shoot weevil management in Bt cotton at B. Gudihal village (Kalghatgi Taluk) during 2013-14 and 2014-15 kharif seasons under rainfed conditions. Results revealed the superiority of Profenophos 50 EC @ 2 mL/L at 30 DAS + 45 DAS by registering A significantly lowest adult population of 7.19 per plot and grub infestation of 17.78 per cent. Similarly, treatment, Profenophos 50 EC @ 2 mL/L at 30 DAS + 45 DAS recorded the lowest number of grubs (0.53/plant), shortest tunnel length (4.83 cm) and the lowest number of broken branches (4.5/10 infested plants) was found to be superior to the rest of the treatment. Treatment Profenophos 50 EC @ 2 mL/L at 30 DAS + 45 DAS recorded significantly higher seed cotton yield (21.45 q/ha), net returns (Rs. 49,559.54/ha) and B:C ratio (2.34) and found to be a promising treatment.