1Department of Agriculture, Government of Andhra Pradesh, India.
2Department of Entomology, Agricultural College, Acharya N.G. Ranga Agricultural University, Bapatla-522 101, Andhra Pradesh, India.
3Department of Plant Pathology, Agricultural College, Acharya N.G. Ranga Agricultural University, Bapatla-522 101, Andhra Pradesh, India.
4Department of Biotechnology, Regional Agricultural Research Station, Acharya N.G. Ranga Agricultural University, Lam, Guntur-522 034, Andhra Pradesh, India.
*Corresponding Author: Rajasekhar Lella, Department of Agriculture, Government of Andhra Pradesh, India. Email: rajagrico724@gmail.com
Field efficacy of insecticides to control thrips in significant blackgram cultivation regions with bud necrosis disease as a key concern.
Field experiment was conducted to test insecticides as seed treatment and foliar sprays for the management of thrips in blackgram during rabi 2019–20 and kharif, rabi of 2020–21.
T5 (Seed treatment with Imidacloprid 70% WG followed by Fipronil 5 % SC @ 2 mL L-1) was proved best in reducing the thrips population with highest grain yield i.e. 1414 kg ha-1 and highest ICBR 1:4.80 during rabi 2019–2020 with least bud necrosis disease incidence. During Kharif 2020–2021, highest population reduction was found in treatment Imidacloprid 70 WG seed treatment + spinosad 45 SC spray (86.67 per cent). During rabi 2020–2021, Imidacloprid 70 WG seed treatment + Fipronil 5 SC spray recorded highest grain yield i.e. 1439 kg ha-1 with ICBR 1:4.45 followed by thiamethoxam 70 WS seed treatment + Fipronil 5 SC spray.
Grain yield, ICBR, Kharif, Rabi, Thrips
