Through the experiments on the effect, the most appropriate time and insecticide concentration of control of insects are discovered.

通过药效实验，找到了适宜浓度、最佳时间、具有高效低毒的农药。

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The material and method for the experiment, observation and results, growth characteristic and product, control of insects were explained respectively.

文章对耳叶马兜铃引种试验的材料与方法、试验内容与结果、生长特性及产量以及病虫害的防治，分别作了阐述。

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Malaria, Lymes Disease, Bebesia can be carried by insects and with Rabies, will likely grow out of control without human intervention.

各种昆虫会带来疟疾、莱姆病或巴贝斯虫病，类似于狂犬病的病毒性疾病在缺少人类的控制之下会一发而不可收拾。

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These include natural and organic methods to control harmful insects and weeds instead of using chemicals.

VOA: special.2009.07.14

So the native South African took the insects (Scarabaeus satyrus) into the Johannesburg planetarium where she could control the type of star fields a beetle might see overhead.

BBC: Dung beetles guided by Milky Way