Evaluation of the effectieness of insecticide trunk injections for control of Latoia lepida (Cramer) in the sweet olive tree Osmanthus fragrans
文献类型： 外文期刊
作者： Huang, Jun 1 ; Zhang, Juan 1 ; Li, Yan 2 ; Li, Jun 3 ; Shi, Xiao-Hua 1 ;
作者机构： 1.Zhejiang Acad Agr Sci, Flower Res & Dev Ctr, Hangzhou, Zhejiang, Peoples R China
2.Chinese Acad Sci, Key Lab Chem Nat Prod Guizhou Prov, Guizhou, Guiyang Provinc, Peoples R China
3.Guangdong Inst Appl Biol Resources, Guangdong Key Lab IPM Agr, Guangzhou, Guangdong, Peoples R China
4.Guangdong Inst Appl Biol Resources, Publ Lab Wild Anim Conservat & Utilizat, Guangzhou, Guangdong, Peoples R China
关键词： Leaf loss;Mortality;Latoia lepida;Osmanthus fragrans;Trunk injection;Frass
期刊名称：PEERJ （ 影响因子：2.984； 五年影响因子：3.369 ）
ISSN： 2167-8359
年卷期： 2016 年 4 卷
页码：
收录情况： SCI
摘要： The screening of suitable insecticides is a key factor in successfully applying trunk injection technology to ornamental plants. In this study, six chemical pesticides were selected and injected into the trunks of Osmanthus fragrans to control the nettle caterpillar, Latoia lepida (Lepidoptera: Limacodidae), using a no-pressure injection system. The absorption rate of the insecticides, the leaf loss due to insect damage, and the mortality and frass amount of L. lepida larvae were evaluated after 77 and 429 days. The results showed that 4% imidacloprid + carbosulfan and 21% abamectin + imidacloprid + omethoate had the fastest conductivity and were completely absorbed into the trunkswithin14 days; however, the efficiencies of these insecticides in controlling L. lepidawere extremely low. Additionally, the treatment 10% emamectin benzoate + clothianidin and 2.5% emamectin benzoate was almost completely absorbed within 30 days and exhibited a longer duration of insecticide efficiency (>80% mortality) in the upper and lower leaves of the canopy. Treatment with these insecticides also resulted in significantly lower leaf loss and frass amounts. We conclude that emamectin benzoate and emamectin benzoate + clothianidin have a rapid uptake into O. fragrans, and are effective as insecticides over long durations. Hence, they may be a suitable control option for L. lepida in O. fragrans plants.
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