VEGETABLE OILS AS GRAIN PROTECTANTS AGAINST PULSE BEETLE CALLOSOBRUCHUS CHINENSIS INFESTING PEA SEEDS ’

摘要

Six vegetable oils, viz. mustard, neem, karanj, cedar, apricot and olive were evaluated at monthly intervals for protection of pea seeds from pulse beetle, Callosobruchus chinensis in the Department of Environmental Science, Dr. Y. S. Parmar University of Horticulture and Forestry, Nauni, Solan. All the vegetable oils were effective against pulse beetle upto two month of treatment. Neem with 17.78 per cent and karanj with 14.81 per cent mortality were most effective against C. chinensis. All the tested vegetable oils at 5 per cent concentration inhibited oviposition and progeny development of pulse beetle upto three and five months of treatment, respectively. Seed damage by pulse beetle was protected upto 5 months of treatment with maximum seed germination (86.67%) using 5 per cent neem concentration followed by karanj (84.67%).