Fumigant Activities of Three Plant Powders against Stored Grain Beetles
The insecticidal properties of Eugenia aromatica, Dennettia tripetala and Piper guineense were assessed in the laboratory for their potential to protect stored grains against insect depredation using their fumigant action. Results from fumigant bioassay revealed that responses of test beetles to plant materials was dependent upon susceptibility of insect species, application rate and exposure time. E. aromatica powder was the most toxic; evoking the highest mean percentage mortality on the test beetles and this was significantly different（P ≤ 0.05)from the mortalities obtained in treatments with two other plant powders and control. At the highest concentration of 0.47mg/cm3,E. aromatica gave 63.75,82.5,67.5,43.75,and 48.75% mean percentage mortalities on S. zeamais, C. maculatus, T.castaneum, L. serricorne and O. mercator respectively at four days after treatment. The plant powders used in this study have bioactive components, which are toxic to stored product insects, thus could serve as good substitute for synthetic chemical insecticides like Methyl Bromide. Resourcepoor farmers in developing countries could harness the use of these plant materials for protecting their produce against insect attack.
Akinkurolere R.O Xie Jun Yi Shixiao You Hongguang Zhang Hongyu
Institute of Urban Pests, College of Plant Science and Technology, Huazhong Agricultural University, Hubei Branch of China Grain Reserves Corporation, No.786 Minzhu Road, Wuhan, Hubei, 430071, P.R.Chin Macheng Grain Depot of China Grain Reserves Corporation, Economic-technological Development Area of Institute of Urban Pests, College of Plant Science and Technology, Huazhong Agricultural University,
国际会议
成都
英文
114-119
2008-09-21（万方平台首次上网日期，不代表论文的发表时间）