Vol. 11, Issue 5 (2022)

Author(s):
Buredla Shaik Neelofor and Ashwani Kumar

Abstract:
The field experiment was conducted at central research farm, SHUATS, Prayagraj, U.P. from September 2021 to March 2022. Efficacy of seven treatments viz., Spinosad 45 SC, Diafenthurion 50 WP, Acetamiprid 20 SP, Indoxacarb 14.5 SC, Nisco sixer plus, Mech – 333 and Neem oil were evaluated against Chilli thrips, Scirtothrips dorsalis 2021. Among the insecticidal treatments Spinosad 45% SC reported best in the population reduction of chillithrips with 95.21% followed by Acetamiprid 20% SP (88.61%), Diafenthiuron 50% WP (86.52%), Nisco sixer plus (85.21%), Indoxacarb 14.5% SC (83.70%) and Mech 333 (81.75%) was next effective treatment. Among all the treatments Neem oil (78.91%) was found least effective but comparatively superior over control (Water spray). All treatments were found at par with control (water spray). The best and economical treatment was Spinosad 45% SC (125q/ha) with C:B ratio 1:23.5 followed by Acetamiprid 20% SP (119 q/ha) with C:B ratio 1:22.4, Diafenthiuron 50% WP (115q/ha) with C:B ratio 1:21.5, Nisco sixer plus (11q/ha) with C:B ratio 1:20.4, Indoxacarb 14.5% SC (100q/ha) with C:B ratio 1:18.7, Nisco Mech – 333 (92q/ha) with C:B ratio 1:17.0, Neem oil (85 q/ha) with C:B ratio 1:15.6 as compared to control (45q/ha) with C:B ratio 1:15.6. On the basis of Cost benefit ratio (CBR), Spinosad 45 SC was found most economical.