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首页> 外文学位 >Pest management tactics for the western cabbage flea beetle (Phyllotreta pusilla Horn) on brassica crops.
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Pest management tactics for the western cabbage flea beetle (Phyllotreta pusilla Horn) on brassica crops.

机译：芸苔属作物上的白菜跳蚤甲虫（Phyllotreta pusilla Horn）的害虫管理策略。

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摘要

The western cabbage flea beetle, Phyllotreta pusilla Horn (Chrysomelidae: Coleoptera), is often the most important insect pest of brassica crops in the Rocky Mountain region. In this study, alternative management tactics such as cultural, mechanical, and chemical controls were investigated. In these studies action thresholds were also developed.; Chinese cabbage, the cabbage cultivars 'Golden Acre' and 'Copenhagen Market' and the broccoli cultivar 'Green Goliath', were significantly most preferred. Cauliflower, Brussels sprouts, collard, kale and the cabbage cultivars 'Red Acre', 'Earliana' and 'Salad Delight' and broccoli cultivars 'Love Me Tender Hybrid' and 'Premium Crop' were significantly least preferred by flea beetles. A 40-cm in-row spacing plant density resulted in a significant decrease in flea beetle numbers in given area, but an increase in numbers infesting individual plants within that area. Flea beetle density was highest in plots with no radishes interplanted between broccoli plants. The colors Saturn green, Saturn yellow and white were significantly the most attractive to flea beetles compared to the transparent control. Allyl isothiocyanate baited traps were significantly attractive to western cabbage flea beetle adults. Traps baited with canola oil were significantly less attractive compared to allyl isothiocyanate. Increase in allyl isothiocyanate concentration up to 2% significantly increased the attractiveness of the traps. Thiodan (endosulfan) and Asana (esfenvalerate) were significantly the most effective insecticides. Margosan-O, SunSpray, Azatin, and diatomaceous earth were significantly the most effective tested repellents. Head diameter was significantly larger in plots maintained at 0-beetles per plant threshold compared to head diameter from plots maintained at 10-beetles per plant threshold and the control. Yield obtained from plots maintained at 0, 2 and 5-beetles per plant thresholds in 1997 and 0-beetles per plant threshold in 1998 was significantly higher compared to the 10-beetles per plant threshold and the control. Greatest head size reduction and yield loss occurred at the 10-beetles per plant threshold. The five flea beetles per plant threshold appears to be an appropriate action threshold for flea beetle control on seedling brassica crops.
机译：西白菜跳蚤甲虫Phyllotreta pusilla Horn（Chrysomelidae：Coleoptera），通常是落基山地区芸苔属作物最重要的害虫。在这项研究中，调查了替代管理策略，例如文化，机械和化学控制。在这些研究中，还制定了行动阈值。大白菜，白菜品种“金英亩”和“哥本哈根市场”以及西兰花品种“绿巨人”是最优选的。花椰菜，抱子甘蓝，羽衣甘蓝，羽衣甘蓝和甘蓝品种'Red Acre'，'Earliana'和'Salad Delight'和西兰花品种'Love Me Tender Hybrid'和'Premium Crop'是跳蚤甲虫的首选。行间距为40厘米的植物密度导致给定区域内跳蚤甲虫数量显着减少，但侵扰该区域内单个植物的数量增加。在西兰花植物之间没有插入萝卜的地块中，跳蚤甲虫密度最高。与透明对照组相比，土星绿色，土星黄色和白色对跳蚤甲虫的吸引力最大。异硫氰酸烯丙基诱饵诱集装置对西洋甘蓝跳蚤甲虫成虫具有明显的吸引力。与异硫氰酸烯丙酯相比，用菜籽油诱集的诱集剂吸引力明显降低。异硫氰酸烯丙酯浓度最高增加到2％会显着提高捕集阱的吸引力。硫丹（硫丹）和Asana（艾斯戊戊酸酯）是最有效的杀虫剂。 Margosan-O，SunSpray，Azatin和硅藻土是经测试最有效的驱虫剂。与保持在每株植物10个甲虫的阈值的地块和对照组相比，头径显着更大。从1997年维持在每株0甲虫，每株2甲虫和1998年维持在每株0甲虫的地块获得的产量比每株10株甲虫和对照高。在每株植物10个甲虫的阈值时，最大的头尺寸减少和产量损失。每株植物五个跳蚤甲虫阈值似乎是控制芸苔幼苗作物上的跳蚤甲虫的适当行动阈值。

著录项

  • 作者

    Al-Doghairi, Mohammed A.;

  • 作者单位

    Colorado State University.;

  • 授予单位 Colorado State University.;
  • 学科 Biology Entomology.; Agriculture Agronomy.
  • 学位 Ph.D.
  • 年度 2000
  • 页码 166 p.
  • 总页数 166
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 昆虫学;农学（农艺学）;
  • 关键词

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