Efficacy of edible and non-edible oils against the pulse beetle, Callosobruchus chinensis (Coleoptera: Bruchidae) [in Bangladesh].
1993
Ahmed K.S. | Haque M.A. | Islam B.N.
Laboratory experiments were conducted to ascertain the efficacy of oils of neem, Azadirachta indica A. Juss; Linseed, Linum usitatissimum L., Safflower, Carthamus tinctorius L.; Sunflower, Helianthus annus L.; and Sesame, Sesamum indicum L. against the pulse beetle, Callosobruchus chinensis (L.) on mungbean seeds, Vigna radiata L. Four concentrations viz., 0.5, 1.0, 2.0 and 4% (v/v) of each oil were tested. All the concentrations of each oil significantly reduced the oviposition and adult emergence of the pulse and 0.44 adults were recorded on mungbean seeds treated with 4% concentration completely protected the pulse seeds from the attack of the pulse beetle while only 2.00, 11.27, 2.08 and 1.96% of seed loss were recorded at the same concentration of linseed, safflower, sunflower and sesame oil, respectively compared to 56.27 in control. The effectiveness of oils increased with the increase of the concentrations in all cases. Among the oils tested neem oil was the best protectant of pulse seeds against C. chinensis.
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