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Effectiveness of Flame for Preplant Pest Management in Leaf Vegetable Fields

文献类型： 外文期刊

作者： Guo, Wenlei 1 ; Feng, Li 1 ; Wu, Dandan 1 ; Zhang, Chun 1 ; Tian, Xingshan 1 ;

作者机构： 1.Guangdong Acad Agr Sci, Plant Protect Res Inst, Guangdong Prov Key Lab High Technol Plant, Guangzhou 510640, Guangdong, Peoples R China

关键词： flaming machine; insect pest; paraquat; southern China; thermal weeding

期刊名称：HORTTECHNOLOGY （ 影响因子：1.087； 五年影响因子：1.059 ）

ISSN： 1063-0198

年卷期： 2019 年 29 卷 6 期

页码：

收录情况： SCI

摘要： Widespread herbicide-resistant weeds and severe insect pest infestations pose a challenge to the preplant pest management (PPPM) strategy currently in use in leaf vegetable fields in southern China. The aim of this study was to develop a new weed and insect control method for use before planting leaf vegetables in southern China. Two flaming machines (a tractor mounted and a trolley flaming machine) were designed, and their efficacies for the control of insect and weed pests were evaluated and compared in two field trials. With liquefied petroleum gas (LPG) at 101 kg.ha(-1), flaming machines reduced plant numbers by 86.7% to 98.8% 2 days after treatment (DAT), which was equal to or higher than the reduction after application of paraquat at 900 g.ha(-1). Some weed species, especially awnless barnyard grass (Echinochloa colones) and goosegrass (Eleusine indica), regrew at 7 DAT, resulting in a decrease in control efficacy. Flaming machines also reduced the number of diamondback moth (Plutella xylostella) larvae by 83.0% to 88.2% and the number of adult striped flea beetles (Phyllotreta striolata) by 64.9% to 80.9%. This is the first report on flaming treatment in China to show that this method is a promising alternative to chemical pesticides for PPPM in leaf vegetable fields.

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