...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Economic Entomology >Action Thresholds for Managing Megacopta cribraria (Hemiptera: Plataspidae) in Soybean Based on Sweep-Net Sampling
【24h】

Action Thresholds for Managing Megacopta cribraria (Hemiptera: Plataspidae) in Soybean Based on Sweep-Net Sampling

机译：基于扫描网采样的大豆中大斑潜蝇（Hemiptera：Plataspidae）的行动阈值

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The kudzu bug, Megacopta cribraria (F.), first discovered in the United States in 2009, has rapidly become a pest of commercial soybean, Glycine max (L.) Merrill, throughout much of the southeast. Because of its recent arrival, management practices and recommendations are not well established. To develop action thresholds, we evaluated insecticide applications targeted at different densities of adults and nymphs determined using the standard 38-cm diameter sweep net sampling method in 12 soybean field trials conducted in Georgia, North Carolina, and South Carolina from 2011 to 2013. Average peak densities of M. cribraria in the untreated controls reached as high as 63.5 +/- 11.0 adults per sweep and 34.7 +/- 8.0 nymphs per sweep. Insecticide applications triggered at densities of one adult or nymph of M. cribraria per sweep, two adults or nymphs per sweep, and one adult or nymph per sweep, with nymphs present, resulted in no yield reductions in most cases compared with plots that were aggressively protected with multiple insecticide applications. A single insecticide application timed at the R3 or R4 soybean growth stages also resulted in yields that were equivalent to the aggressively protected plots. Typically, treatments (excluding the untreated control) that resulted in fewer applications were more cost-effective. These results suggest that a single insecticide application targeting nymphs was sufficient to prevent soybean yield reduction at the densities of M. cribraria that we observed.
机译：2009年在美国首次发现的葛根臭虫Megacopta cribraria（F.）在东南部的大部分地区已迅速成为商品大豆Glycine max（L.）Merrill的害虫。由于它的到来，因此管理实践和建议还不完善。为了制定行动阈值，我们在2011年至2013年间在佐治亚州，北卡罗莱纳州和南卡罗来纳州进行的12项大豆田间试验中，评估了使用标准直径38厘米扫网取样方法确定的针对不同密度的成虫和若虫的杀虫剂应用。在未经处理的对照中，红褐肉菌的峰值密度每次扫描高达63.5 +/- 11.0个成年人，每次扫描高达34.7 +/- 8.0若虫。每次杀虫剂的施用密度为：一次扫除成虫或若虫若虫，每次扫除两名成虫或若虫，以及每次扫除一名成虫或若虫，如果存在若虫，与激进的地块相比，在大多数情况下不会降低产量。受多种杀虫剂保护。在R3或R4大豆生长阶段施用单一的杀虫剂也会产生与积极保护地块相同的产量。通常，导致更少应用的治疗（不包括未治疗的对照）更具成本效益。这些结果表明，针对若虫的单次杀虫剂施用足以防止在我们观察到的克氏疟原虫密度下大豆产量下降。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号