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首页> 外文学位 >Integrated management of the invasive weed, cut -leaved teasel (Dipsacus laciniatus L.) along a Missouri highways.
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Integrated management of the invasive weed, cut -leaved teasel (Dipsacus laciniatus L.) along a Missouri highways.

机译：密苏里州公路沿线的侵入性杂草切叶tea毛（Dipsacus laciniatus L.）的综合管理。

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摘要

Cut-leaved teasel is an invasive, exotic, and noxious weed in Missouri. It infests areas along highways and minimal disturbance sites. Cut-leaved teasel outcompetes native species and also reduces traffic visibility. Field studies regarding seed biology, detection with digital images, and implementation of an implementation of an integrated management program (herbicides and seeding desirables grasses). Seed characteristics such as viability after flowering, seedling emergence patterns and persistence under field conditions were evaluated under field conditions in central Missouri. Hyperspectral images were collected along interstate highway I-70 during mid-july, when cut-leaved teasel was flowering. Twenty targets were selected with unsupervised classification. Hyperspectral (63bands) and multispectral (12 bands) images were processed for supervised classification using maximum likelihood and spectral angle mapper supervised classification after 20 targets were selected with unsupervised classification. For managing areas where teasel was detected, chemical control with triclopyr, aminopyralid, dicamba and metsulfuron-methyl was applied and grasses sown (tall fescue, Canada wildrye and buffalograss).;Cut-leaved teasel produced viable seed that germinated 12 days after flowering. Seed emerged primarily in April and October, with total emergence up to 31% of seed established. Most of the seed (from 75 to 81%) was lost or died after three years under field conditions; only 6.1% remained viable. Cut-leaved teasel was detected using maximum likelihood classification with 80% accuracy using hyperspectral images. Maximum likelihood classification produced higher accuracy classification compared to spectral angle mapper classifier. Application of aminopyralid herbicide in November and May, along sowing tall fescue, Canada wildrye and buffalograss, were the best combination to reduce infestations of cut-leaved teasel. While herbicide programs involving dicamba and metsulfuron-methyl resulted in acceptable control of cut-leaved teasel, control wiht triclopyr was poor (25% control one year after treatments). The development of biology information regarding cut-leaved teasel demonstrated that management under field conditions will require several years. The combination of remote sensing and management with herbicides/grasses can be effective on roadside habitats. The integration of biology, detection, and control techniques lead to the optimum suitable cut-leaved management plan.
机译：切叶起毛机是密苏里州的一种入侵，异国和有害杂草。它侵染了高速公路沿线地区和最小的干扰点。切叶起毛机胜过本地物种，并降低了交通可见度。关于种子生物学，数字图像检测以及实施综合管理计划（除草剂和种子草）的实地研究。在密苏里州中部的田间条件下评估了种子特性，例如开花后的活力，幼苗出苗方式和田间条件下的持久性。七月中旬，当切叶青苔开花时，沿州际公路I-70收集了高光谱图像。在无监督分类的情况下选择了20个目标。在选择了无监督分类的20个目标后，使用最大似然和光谱角映射器监督分类处理高光谱（63个波段）和多光谱（12个波段）图像进行监督分类。在发现tea毛的管理区域，对虫，氨基吡啶，麦草畏和甲基磺隆进行了化学防治，并播种了草（高羊茅，加拿大野黑麦和牛鞭草）；切叶tea毛产生了可存活的种子，开花后12天发芽。种子主要在4月和10月出苗，占种子总数的31％。在田间条件下三年后，大部分种子（从75％到81％）丢失或死亡。仅有6.1％仍然可行。使用高光谱图像使用最大似然分类以80％的精度检测切叶的起毛机。与谱角映射器分类器相比，最大似然分类产生了更高的精度分类。在11月和5月施用氨基吡啶类除草剂，以及在高羊茅上播种，加拿大野生黑麦和水牛，是减少切叶tea毛侵扰的最佳组合。尽管涉及麦草畏和甲基磺草隆的除草剂方案可以很好地控制切叶起毛，但对敌百虫的防治效果却很差（处理后一年为25％）。有关切叶tea毛的生物学信息的发展表明，在田间条件下进行管理将需要数年时间。遥感和管理与除草剂/草的结合可以在路边栖息地有效。生物学，检测和控制技术的整合导致了最合适的切叶管理计划。

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  • 作者

    Bentivegna, Diego Javier.;

  • 作者单位

    University of Missouri - Columbia.;

  • 授予单位 University of Missouri - Columbia.;
  • 学科 Biology Botany.
  • 学位 Ph.D.
  • 年度 2008
  • 页码 144 p.
  • 总页数 144
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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