Efficacy of Cow Bone Charcoal Dust in the Management ofthe Maize Weevil, Sitophilus zeamais Motsch. [Coleoptera: Curculionidae], and the Lesser Grain Borer, Rhyzopertha dominica Fab. [Coleoptera: Bostrichidae)), Infesting Stored Maize (Zea mays L.)Grains.

Abstract

Dry bones (femur and ribs) of the African humped cow, Bos indicus (L.), were burnt with wood fire and the resulting charcoal was manually ground and sieved to produce the fine inert cow bone charcoal dust (CBCD) that was admixed-with maize (Zea mays L.) grains at the rates of 0.1 ,0.25,0.5, 1.0,2.0,4.0, and 8.0 g /100 g of grain. Adults of Sitophilus zeamais Motsch. and Rhyzopertha dominica Fab. were exposed to the treated grain and mortality was recorded at 2, 4, 6, and 8 days post-infestation. The study was conducted under ambient conditions (28.5-32.5°C and 50-62 % RH) in the laboratory. For both species, mortality increased significantly (P<0.05) with application rate and exposure interval. CBCD significantly (P

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牛骨炭粉防治玉米象甲的效果研究。[鞘翅目:蛾科]和小纹螟，纹螟。[鞘翅目:蝽科])，贮藏玉米(Zea mays L.)籽粒害虫。

非洲驼背牛(Bos indicus, L.)的干骨(股骨和肋骨)用柴火燃烧，所得的木炭经过人工研磨和筛选，生产出精细的惰性牛骨炭粉(CBCD)，以0.1、0.25、0.5、1.0、2.0、4.0和8.0克/100克谷物的比例与玉米(Zea mays L.)谷物混合。玉米象成虫。和多米尼沙沙。分别于侵染后2、4、6和8天记录死亡率。本研究在实验室环境条件下(28.5-32.5°C, 50- 62% RH)进行。两种植物的死亡率均随施用量和暴露时间的增加而显著升高(P<0.05)。CBCD显著(P< 0.01)抑制了处理谷物的F、后代产量和成虫排斥。在23.5 ~ 33℃、63.5 ~ 87.5%相对湿度的环境条件下，每100g玉米中添加~ 0.25 g CBCD，在贮藏4 ~ 12个月期间，玉米玉米玉米的子代羽化被完全抑制。用~ 0.5 g CBCD处理100 g稻谷时，结果与此相似。死亡率(probit)与施药率(log)的回归表明，多米家蝇对CBCD的敏感性低于玉米家蝇。CBCD似乎在储粮害虫管理中具有潜力。

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