Laboratory evaluation of the efficacy of three pesticidal plants: Senna alata Linnaeus., Hura crepitans Linnaeus., and Calophyllum inophyllum Linnaeus for the protection of Cola nitida (Schott & Endl.) against cola weevil (Balanogastris kolae Desbr.) was carried out in the Department of Forestry and Wildlife Resources Management, University of Calabar. Adult mortality in treated kolanuts at various concentrations was significantly (P < 0.05) higher compared with the untreated (0.00 %). The selected plants at various concentrations recorded a significant (P < 0.05) lower adult emergence from week five to nine compared with the untreated (12.33 ± 1.20, 20.67 ± 3.18, 31.67 ± 2.96, 38.00 ± 0.58, and 40.33 ± 0.88). However, in weight loss, all the extracts (paste) from week three to nine caused significantly (P < 0.05) low weight loss compared to the untreated. Storage of kolanut with 1.5 g of the selected plants, especially with C. inophyllum was found adequate, considering their general protective effectiveness on the kolanuts. The tested extracts therefore could be used as alternative to synthetic insecticides by resource poor farmers, so as to reduce their total dependence on synthetic insecticides for kolanut storage.

中文翻译：

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生物杀虫植物产品保护可乐 (Schott & Endl.) 免受储存中的可乐象鼻虫、龟尾螟（鞘翅目：仙茅科）的功效

三种杀虫植物的实验室评估：番泻叶、Hura crepitans Linnaeus. 和 Calophyllum inophyllum Linnaeus 保护可乐 (Schott & Endl.) 对抗可乐象鼻虫 (Balanogastris kolae Desbr.) 的功效卡拉巴尔大学林业和野生动物资源管理系。与未处理的 (0.00 %) 相比，处理过的各种浓度的可乐果的成人死亡率显着 (P < 0.05) 更高。与未处理（12.33 ± 1.20、20.67 ± 3.18、31.67 ± 2.96、38.00 ± 0.58 和 40.33 ± 0.88）相比，不同浓度的选定植物从第 5 周到第 9 周记录显着（P < 0.05）较低的成虫出现。然而，在减肥方面，从第 3 周到第 9 周的所有提取物（糊状物）都造成了显着的影响（P < 0. 05) 与未处理的相比，体重减轻低。考虑到可兰果对可兰果的一般保护效果，发现用 1.5 克选定植物，尤其是 C. inophyllum 的可兰果储存是足够的。因此，经过测试的提取物可以被资源贫乏的农民用作合成杀虫剂的替代品，从而减少他们对合成杀虫剂储存可乐果的完全依赖。