Vol. 12, Issue 12 (2023)

Author(s):
Nagaraju Alugoju, M Rajeshwar Naik, K Shivakrishna, I Thirupathi, U Sravanthi and B Sathish Kumar

Abstract:
A front line demonstration on management of sucking pest complex i.e., jassids, thrips and whitefly in Bt cotton has been conducted in different villages in various mandals of Mancherial district in Telangana state during Kharif (June - December) season of 2019-20, 2020-21 and 2021-22 respectively to create awareness about the integrated approaches for the management of the pest among the farming community. The adoption of Integrated Pest Management practices like Stem application with Imidacloprid, water @ 1:20 at 45 and 60 DAS for Jassids and other sucking pest, Need based or intermittent spraying of Azadirachtin 1500 ppm @ 5ml with surf (1g) per litre of water, Rotation of insecticidal sprays with different groups and Installation of Yellow sticky traps @ 10/acre etc. were carried out. The results revealed that the superior percent reduction i.e., in the incidence of jassids in the IPM demonstrated plots at 25.69%, 60.70% and 30.35%, in case of thrips @ 32.70%, 59% and 41.77% and in case of whiteflies @ 50.91%, 65.50% and 21.85% over farmers practice with increased yields of 9.98%, 9.03% and 10.97% during corresponding Kharif (June - December), 2019-20, 2020-21 and 2021-22. Further, the demonstration plots registered with higher cotton yield of 1785, 1817 and 1608 kgha^-1 as compared to 1623, 1661 and 1449 kg ha^-1under farmers practice. The Cost-Benefit ratio of 1.89, 1.79 and 2.79 respectively in the technology demonstrated plots whereas in farmers practice the recorded Cost - Benefit ratio of 1.64, 1.46 and 1.90 during corresponding Kharif (June - December), 2019-20, 2020-21 and 2021-22.