首页> 外文期刊>Environmental toxicology and chemistry >COMPARISON OF THE EFFECTS OF GLYPHOSATE AND ATRAZINE HERBICIDES ON NONTARGET PLANTS GROWN SINGLY AND IN MICROCOSMS
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COMPARISON OF THE EFFECTS OF GLYPHOSATE AND ATRAZINE HERBICIDES ON NONTARGET PLANTS GROWN SINGLY AND IN MICROCOSMS

机译:草甘膦和阿曲嗪除草剂对单生和微生长期非靶标植物影响的比较

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摘要

Intensification of agriculture and the corresponding increase in herbicide use has led to concern regarding the effects these chemicals may have on nontarget plants of agroecosystems. Current pesticide registration guidelines are focused on testing crop species grown singly in pots under greenhouse conditions and may not provide adequate measures of protection to noncrop species. The objective of the present study was to compare the response of terrestrial and wetland plants to the herbicides glyphosate and atrazine when grown singly in pots versus under different microcosm conditions. Greenhouse microcosms were generally more sensitive than single-species tests. Plants grown for an extended test period or in seminatural field conditions were generally less sensitive to herbicides. Sensitivity was found to be dependent on interactions between species and test conditions. Changes in community structure were observed in herbicide-treated microcosms that would not be predicted from single-species testing. Single-species tests are useful because they are inexpensive, can demonstrate clear dose-response patterns uncomplicated by other factors influencing growth, and are able to provide a measure of the sensitivity of a given species to glyphosate and atrazine. However, they are unable to predict subtle changes in community structure that may have important long-term consequences.
机译:农业集约化和除草剂使用量的相应增加已引起人们对这些化学品可能对农业生态系统非目标植物产生的影响的关注。当前的农药注册指南侧重于测试在温室条件下在盆中单独种植的农作物物种,可能未提供对非农作物物种的足够保护措施。本研究的目的是比较陆地和湿地植物在盆中单独生长时和在不同微观环境下对除草剂草甘膦和and去津的响应。温室缩影通常比单种试验更敏感。在延长的测试期间或在半自然田间条件下生长的植物通常对除草剂不那么敏感。发现灵敏度取决于物种与测试条件之间的相互作用。在除草剂处理的微观世界中观察到群落结构的变化,这无法通过单物种测试来预测。单物种测试之所以有用,是因为它们价格便宜,可以证明清晰的剂量反应模式,而不受其他影响生长的因素的影响,并且可以提供给定物种对草甘膦和at去津的敏感性的度量。但是,他们无法预测社区结构的细微变化,而这些细微变化可能会带来重要的长期后果。

著录项

  • 来源
    《Environmental toxicology and chemistry》 |2010年第10期|p.2304-2315|共12页
  • 作者单位

    Science and Technology Branch, Environment Canada, 1125 Colonel By Drive, Carleton University, Ottawa, Ontario, K1A 0H3, Canada;

    rnScience and Technology Branch, Environment Canada, 1125 Colonel By Drive, Carleton University, Ottawa, Ontario, K1A 0H3, Canada;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    phytotoxicity testing; microcosms; nontarget plants; glyphosate; atrazine;

    机译:植物毒性测试;缩影非目标植物;草甘膦阿特拉津;
  • 入库时间 2022-08-17 13:32:25

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