Department of Entomology, Dr Rajendra Prasad Central Agricultural University, Pusa, Samastipur, 848125, Bihar, India
*Email: rk440659@gmail.com (corresponding author)
Online Published on 6 February, 2023.
A field experiment was conducted at the Research Farm of Tirhut College Agriculture Dholi, Muzaffarpur (Bihar) during kharif 2018 and 2019 to evaluate the efficacy of insecticides against whitefly Bemisia tabaci (Genn.) on okra. The results revealed that thiamethoxam 25WG @ 25 g a.i./ha after three applications, at 15 days interval gave maximum reduction of incidence (0.50/3 leaves). The next effective ones were acetamiprid 20SP 20 g a.i./ha and profenophos 50EC 500 g a.i./ha which was at par with thiamethoxam 25WG @ 25g a.i./ha. Among the botanicals, the yam bean seed extract (YBSE) 5% was superior followed by neem seed kernel extract (NSKE) 5% and neem oil 3%.
Efficacy, Insecticides, Okra, Bemisia tabaci, Thiamethoxam, Acetamiprid, Profenophos, Spinosad, Deltamethrin, Neem oil, YBSE, NSKE
