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Ethanolic extract of dried leaves of Ricinodendron heudelotii was partitioned between equal volumes of hexane, ethylacetate, chloroform, butanol and water to obtain the various fractions. These fracti...
Both Chromolaena odorata and Citrus limon are common in tropical areas as an important weed and fruit crop respectively. Dried and pulverized leaves of C. odorata and fruit peels of C. limon were ev...
The maize weevil, Sitophilus zeamais is a major stored grain pest currently controlled by chemical pesticides. This commonly used control method to prevent post-harvest losses leads to pollution o...
Food situation has remained insecure and unpredictable in sub-Saharan Africa, leading to high levels of cyclic famine and poverty. This has been exacerbated by perennial pest problems, which cause sub...
研究了10种竹子提取物对玉米象种群形成的抑制作用和驱避作用。结果表明,灰水竹和短穗竹提取物对玉米象成虫的驱避效果较好,72 h驱避等级达到Ⅳ级,平均驱避率分别为77.44%和64.84%。应用索氏抽提法所得到的灰水竹提取物对玉米象成虫的驱避作用明显强于间歇振荡法所得到的提取物,驱避中浓度分别为0.9994 g/L。10 g/L的竹提取物对玉米象种群形成的抑制作用不明显,只有白纹短穗竹提取物对玉米象...

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