ECO-FRIENDLY MANAGEMENT OF CALLOSOBRUCHUS CHINENSIS L. IN PIGEONPEA

ABSTRACT

Laboratory studies on “Eco-friendly management of Callosobruchus chinensis L. in pigeonpea” were conducted in the Department of Entomology, College of Agriculture, Rajendranagar, Hyderabad during 2010-11. The grain protectants used in the study indicated that all the 4 oils viz., soyabean, sesamum, eucalyptus and karanj oil used @ 3ml/kg seed significantly reduced the fecundity, adult emergence and seed infestation were on par with the chemical protectants deltamethrin 2.8 EC (0.04ml/kg seed) and spinosad 45 SC (4 ppm). These grain protectants took upper hand with respect to adult mortality. These chemicals caused 100% mortality at 24 hours after treatment while among the oils, except karanj oil which recorded 82.67% mortality at 24 hours after treatment, the other 3 oils were slow in their action and caused less mortality of test insect after 7 days of treatment.