Efficacy of Insecticides against Borers on Pigeonpea in Malwa Region of Madhya Pradesh, India
Tilotama Chouhan
Department of Entomology, Rajmata Vijayaraje Scindia Krishi Vishwa Vidyalaya, Gwalior, Madhya Pradesh, 474002, India.
Bharat Lal
*
Department of Entomology, Rajmata Vijayaraje Scindia Krishi Vishwa Vidyalaya, Gwalior, Madhya Pradesh, 474002, India.
Kiran Thakur
Department of Entomology, Rajmata Vijayaraje Scindia Krishi Vishwa Vidyalaya, Gwalior, Madhya Pradesh, 474002, India.
*Author to whom correspondence should be addressed.
Abstract
An experiment was carried out in pigeonpea variety RVSA 16-1 during Kharif season of 2022-23 at Zonal Agriculture Research Station, Rafi Ahmed Kidwai College of Agriculture, Sehore (M.P.) to find out most effective newer insecticide against one of the major insect-pest of pigeonpea i.e pod borers. There are eight different treatments were sprayed at 15 days interval. The lowest larval population of H. armigera, M. vitrata and E. atomosa were recorded in plot treated with lufenuron @ 1200 ml/ha followed by chlorfluazuron @ 500 ml/ha, emamectin benzoate @ 125 gm/ha, chlorantraniliprole @ 150 ml/ha and lambda cyhalothrin @ 500 ml/ha with maximum reduction percent over control. While maximum population recorded in control plot. The treatment with the highest yield was recorded in lufenuron @ 1200 ml/ha, which yielded 14.42 q/ha. Chlorfluazuron @ 500 ml/ha 13.27 q/ha was the next effective treatment. Based on the cost benefit ratio results chlorfluazuron @ 500 ml/ha (1:7.95) followed by lufenuron @ 600 ml/ha (1:3.84) recorded the highest cost benefit.
Keywords: Pigeonpea [Cajanus cajan (L.)], gram pod borer (Helicoverpa armigera), plume moth (Exelastis atomosa), leaf webber (Maruca vitrata)