B. LAKSHMI ROJA*, N.C. VENKATESWARLU, A. RAJESH AND B. RAMANAMURTHY
Department of Entomology, S.V. Agricultural College, ANGRAU, Tirupati
A laboratory experiment was conducted to study the effect of different storage containers against pulse beetle Callosobruchus chinensis attack on blackgram seeds in storage during 2019-20. Different storage containers viz., earthen pot, metal bin, plastic bin, plastic bin with 3 cm sand layer above the grain, polypropylene bag, double layered poly ethylene bag, triple layered poly ethylene bag, polyethylene lined gunny bag and gunny bag as control were used for management of pulse beetle. The experiment was conducted with nine treatments and three replication in Completely Randomized Design. The results revealed that maximum oviposition was recorded on metal bin (27.33 eggs/female on 500 seeds) followed by earthen pot (27.00 eggs/female on 500 seeds) and plastic bin (24.33 eggs/female on 500 seeds) and lowest oviposition was recorded on triple layered polyethylene bag (6.33 eggs/female on 500 seeds) followed by Plastic bin with 3 cm sand layer above the grain (14.00 eggs/female on 500 seeds) for 500 seeds than gunny bag (30.33 eggs/female on 500 seeds) and significantly different with each other. Triple layered polyethylene bag and plastic bin with 3 cm sand layer above the grain were found superior and effective in reducing per cent weight loss (5.43% and 9.89%) of seeds, respectively at 90 days after infestation. Earthen pot (20.78%) and Metal bin (19.47%) were the least effective treatments in reducing the per cent weight loss of grains.
Blackgram, Callosobruchus chinensis, per cent weight loss, storage containers