Vol. 11, Special Issue 5 (2022)

Author(s):
Madhu Thuppukonda and Ashwani kumar

Abstract:
A field trail was conducted at the Central Research Field (CRF), Department of Entomology, SHUATS, Prayagraj during Kharif 2021 with an investigation entitled “Comparative efficacy of selected insecticides against chilli thrips (Scirtothrips dorsalis Hood) at Trans Yamuna region of Prayagraj.’’ Seven treatments were evaluated against Scirtothrips dorsalis, i.e., Acetamiprid 20% SP (T1), Imidacloprid 70% WG (T2), Azadirachtin 1% EC (T2), Thiamethoxam 25% WG (T3), Fipronil 5% SC (T4), Diafenthiuron 50% WP (T5), Indoxacarb 14.5 SC (T6), Neem oil 1500ppm (T7) and untreated Control (T8) were evaluated against chilli thrips (Scirtothrips dorsalis). Results revealed that, Among the different treatments, the lowest per cent population reduction of chilli thrips was recorded in Imidacloprid 70% WG (94.523%) followed by acetamiprid 20% SP (92.313%), Indoxacarb 14.5 SC (90.98%). It is followed by Fipronil 5% SC (88.57%) and Diafenthiuron 50% WP (85.92%), Thiamethoxam 25% WG (84.40%) and Neem oil 1500ppm (81.78%) was the least effective among all treatments. While, the highest yield 130.4 q/ha was obtained from the treatment Imidacloprid 70% WG as well as B:C ratio 1:10.64 was obtained high from this treatment. It was followed by acetamiprid 20% SP (1:10.08), Indoxacarb14.5 SC (1:9.16), Fipronil 5% SC (1:8.45), Diafenthiuron 50% WP (1:7.32), Thiamethoxam 25% WG (1:6.97), Neem oil 1500ppm (1:5.64), as compared to Control (1:3.41).