Ileke Kayode David, Ojomo Ayomide Anuoluwapo
Department of Biology, School Life of Sciences, Federal University of Technology, P. M. B. 704, Akure, Ondo State, Nigeria.
Heliyon. 2024 Feb 3;10(3):e25329. doi: 10.1016/j.heliyon.2024.e25329. eCollection 2024 Feb 15.
The main insect pest of stored paddy is (rice weevil). Huge amounts of rice are produced by peasant farmers each year, but the bulk of it is wasted due to insufficient storage facilities and insect pest attacks brought on by careless handling. In this study, the insecticidal effects of biochar on were assessed in femurs from (pig), (chicken), and (cattle). Adult mortality, adult emergence, weight loss, seed damage, and weevil perforation index are among the indicators evaluated. To apply the biochar, different dosages were used: 0.2, 0.4, 0.6, 0.8, and 1.0 g/20 g of paddy rice. In this work, the population of adult on paddy rice was dramatically reduced by all animal bones biochar tested for insecticidal activity (p < 0.05). The animal bone biochar became more effective with increasing dosage. After 24 h of treatment, pig biochar induced a 36.67 % mortality rate of adult , followed by cow biochar's 20 % mortality rate of rice weevils. The fatal dose of cattle, pig, and chicken biochar at which 50 % (LD) of the population of adult responded after 24 h of treatment were 0.83g, 0.43g, and 0.90g, respectively. It should be encouraged to utilize biochar made from animal bones to combat the in stored paddy. They could be utilized as a green control measure to lessen the risk brought on by the usage of synthetic chemical insecticides in the environment.
储存稻谷的主要害虫是米象。农民每年生产大量稻谷，但由于储存设施不足以及处理不当引发的害虫侵袭，大部分稻谷都被浪费了。在本研究中，评估了生物炭对猪、鸡和牛的股骨中米象的杀虫效果。评估指标包括成虫死亡率、成虫羽化率、重量损失、种子损害以及米象穿孔指数。为了施用生物炭，使用了不同剂量：0.2、0.4、0.6、0.8和1.0克/20克稻谷。在这项工作中，所有测试的具有杀虫活性的动物骨生物炭都使稻谷上的米象成虫数量大幅减少（p<0.05）。动物骨生物炭的效果随剂量增加而增强。处理24小时后，猪骨生物炭使米象成虫死亡率达到36.67%，其次是牛骨生物炭使米象死亡率达到20%。处理24小时后，使50%（LD）的米象成虫群体产生反应的牛、猪和鸡骨生物炭的致死剂量分别为0.83克、0.43克和0.90克。应该鼓励利用动物骨制成的生物炭来防治储存稻谷中的米象。它们可作为一种绿色防治措施，以降低环境中使用合成化学杀虫剂带来的风险。
