Green Global
Foundation   Journal
...an emerging window for scientific research and publication across the globe

THE FUMIGANT TOXICITY OF FOUR PLANT BASED PRODUCTS AGAINST THREE STORED PRODUCT PESTS (Pages : 6 - 9)

The fumigant effect of emulsified petroleum ether extract of Acorous calamus rhizome alone and three separated mixtures of different plants materials (A. calamus rhizome + Corchorus capsularis seed, A. calamus + Thevetia neriifolia seed and A. calamus + Zingiber cassumunar rhizome) were evaluated against adults of Sitophilus oryzae (L.), Callosobruchus chinensis (L.) and 13 days old larvae of Tribolium castaneum (Herbst.). The fumigant toxicity of different combination of plant materials with A. calamus extracts were assessed at four doses viz. 10, 20, 30 and 40 mg/100 ml volume and for A. calamus alone was 5, 10, 20 and 30 mg/100 ml volume in space fumigation. Emulsified of A. calamus rhizome extract was found to be the most effective against T. castaneum larvae and C. chinensis adults at 24 and 48 hours. The LD50 values for T. castaneum larvae were 19.63 and 4.08 mg/100 ml volume whereas in case of C. chinensis the LD50 values were 4.63 and 1.04 mg/100 ml volume at 24 and 48 hours respectively. Combination of A. calamus with Z. cassumunar extract was found to be the most effective fumigant against S. oryzae adult (16.48 mg/100 ml volume) at 24 hours but it varied at 48 hours where A. calamus with C. capsularis was the most effective against the beetle (4.08 mg/100 ml volume). Download