Vol. 12, Issue 8 (2023)

Author(s):
Dr. Pratap A Divekar, Sampat Kumar Patel, Manimurugan C, Motilal Kushwaha and Vikas Singh

Abstract:
Diamondback moth (DBM), Plutella xylostella and (CB), Pieris brassicae are serious insect pests on cabbage. Experiments were conducted to study the effectiveness of insecticides against these lepidopteran pests in cabbage cultivation. The efficacy of insecticides namely, chlorantraniliprole, emamectin benzoate, spinosad, indoxacarb, quinalphos, fenvelerate, and novaluron were studied against DBM and CB under field conditions at ICAR-IIVR, Regional Research Station, Sargatia, Kushinagar, India. All the insecticides were found effective in reducing these lepidoptetran insect pests over the untreated control. The reduction of DBM after the application of chlorantraniliprole, indoxacarb, spinosad and emamectin benzoate were observed significantly superior over other insecticides and untreated control at all the interval of observation giving 78.54, 89.91, 86.72 and 74.88 percent reduction over control. Similarly, the reduction of CB after the application of chlorantraniliprole, indoxacarb, spinosad and emamectin benzoate were observed significantly superior over other insecticides and untreated control at all the interval of observation giving 92.12, 84.97, 75.35 and 79.00 percent reduction over control. The insecticides like quinalphos, novaluron and fenvalerate were found relatively less effective causing 56.82, 59.33 and 59.93 percent reduction over control of DBM and 67.41, 65.18 and 51.76 percent reduction over control of CB. Therefore, we recommend the use of newer molecules cyantraniliprole and flonicamid as an alternative option for effective management of the diamondback moth and cabbage butterfly in cabbage.