Combining predatory mites and film mulching to control Bradysia cellarum (Diptera: Sciaridae) on Chinese chives, Allium tuberosum

文献类型： 外文期刊

第一作者： Yan, Hong

作者： Yan, Hong;Wei, Guo-Shu;Yan, Hong;Zhang, Bo;Wang, Endong;Xu, Xuenong

作者机构：

关键词： Chive maggot; Soil solarization; Stratiolaelaps scimitus; Biological control; Integrated pest management

期刊名称：EXPERIMENTAL AND APPLIED ACAROLOGY （ 影响因子：2.132； 五年影响因子：2.196 ）

ISSN： 0168-8162

年卷期：

页码：

收录情况： SCI

摘要： The subterranean insect Bradysia cellarum Frey (Diptera: Sciaridae) is a notorious and major pest of Chinese chives, Allium tuberosum Rottler ex Sprengle (Amaryllidaceae) in China. Current chemical control of B. cellarum results in low insecticide efficacy, high cost and pesticide resistance, therefore there is an urgent need for sustainable management. Here, greenhouse experiments were conducted to evaluate the potential biocontrol agent Stratiolaelaps scimitus Womersley (Acari: Laelapidae) against B. cellarum. The number of B. cellarum larvae in soil declined from 17.6 to 0 in 4 months after releasing predatory mites in high density (5,000 adults per row); treatment was less effective under low densities of 2500 adults per row. To determine whether S. scimitus can be used in combination with soil solarization by film mulching over 40 degrees C for 4 h, we also evaluated heat tolerance of S. scimitus in laboratory and its control efficacy against B. cellarum after high-temperature treatment mimicking the film mulching in greenhouse. As our results showed that egg hatchability of S. scimitus was 2.6% at 38 degrees C and adult survival rate was 2% at 40 degrees C for 4 h, respectively, we concluded S. scimitus was largely inviable and could not reproduce at 40 degrees C. This temperature was the baseline of soil solarization, suggesting predatory mites should be released after soil solarization. When using S. scimitus after soil solarization or when using soil solarization as single treatment, fly larvae declined similarly from initial density of 18 to 0 or 17.2 to 0, respectively, within a month. Thus, our study suggests the potential of S. scimitus as a biocontrol agent of B. cellarum in greenhouse, and the most effective strategy is to combine film mulching and predatory mites (after soil heating) to control B. cellarum in chive productions.

分类号：

  • 相关文献
作者其他论文 更多>>

微信小程序