Vol. 12, Special Issue 8 (2023)

Author(s):
Ganesh N Gote, Uttam B Hole and Dnyaneshwar A Raut

Abstract:
A present survey was undertaken to find out the intensity of pink bollworm incidence on Bt cotton in major cotton cultivating districts of western Maharashtra viz. Ahmadnagar, Jalgaon and Dhule in farmers’ fields at 60, 90, 120 and 150 DAS during Kharif 2018-19. The incidence of pink bollworm was not found at 60 DAS in all surveyed districts but it was started at 90 DAS in Ahmednagar, Jalgaon and Dhule districts. Moreover, the mean percent green bolls damage, percent locule damage in green bolls, larval population per 20 green bolls, percent open boll damage and percent locule damage in open bolls was recorded maximum in Bt cotton fields in Jamner Tahsil of Jalgaon district which was 18.50, 9.02, 6.53, 42.50 and 33.84 percent, respectively. Whereas, the mean percent green boll damage, percent locule damage in green bolls, larval population per 20 green bolls, percent open boll damage and percent locule damage in open bolls was recorded minimum in Rahuri Tahsil of Ahmednagar district which was 14.19, 5.57, 3.59, 32.45 and 23.60 percent respectively.