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首页> 外文期刊>Weed Technology >Effect of Planting Date, Residual Herbicide, and Postemergence Application Timing on Weed Control and Grain Yield in Glyphosate-Tolerant Corn (Zea mays)1
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Effect of Planting Date, Residual Herbicide, and Postemergence Application Timing on Weed Control and Grain Yield in Glyphosate-Tolerant Corn (Zea mays)1

机译：种植日期，残留除草剂和出苗后施用时间对耐草甘膦玉米（Zea mays） 1 的杂草控制和籽粒产量的影响

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摘要

Studies were conducted in 1998 and 1999 in Ohio to determine the effect of postemergence (POST) application timing of glyphosate on weed control and grain yield in glyphosate-tolerant corn, and how this was influenced by corn planting date and the use of soil-applied herbicides. Glyphosate was applied based on giant foxtail height. Two applications of glyphosate provided better weed control than a single application, especially when applied to weeds 10 cm or less in early-planted corn. Yield was reduced occasionally with a single application on 5- or 10-cm weeds, because of weed re-infestation. Failure to control weeds before they reached a height of 15 to 30 cm also resulted in occasional yield loss. Application of atrazine or acetochlor plus atrazine prior to glyphosate did not consistently increase weed control or yield. Results suggested that glyphosate should be applied before weeds reach 15 cm in height to avoid corn grain yield loss.
机译：1998年和1999年在俄亥俄州进行了研究，以确定草甘膦的出苗后（POST）施用时间对耐草甘膦的玉米的杂草控制和谷物产量的影响，以及玉米播种日期和土壤施用量对草甘膦的影响除草剂。草甘膦是根据巨大的狐尾高度施用的。草甘膦的两次施用比单次施用提供了更好的除草效果，尤其是当施用到早播玉米中10 cm或更小的杂草上时。由于杂草再次侵染，单用5厘米或10厘米杂草有时会降低产量。在杂草达到15至30厘米的高度之前未能控制杂草也会导致偶尔的产量损失。在草甘膦之前施用at去津或乙草胺加at去津并不能持续提高杂草控制或产量。结果表明，在杂草达到15厘米高之前应施用草甘膦，以避免玉米籽粒减产。

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  • 来源
    《Weed Technology》 |2002年第3期|p.488-494|共7页
  • 作者

    STEVEN A. GOWER MARK M. LOUX JOHN CARDINA and S. KENT HARRISON;

  • 作者单位

    Graduate Research Associate, Associate Professor, Associate Professor, and Associate Professor, Department of Horticulture and Crop Science, The Ohio State University, Columbus, OH 43210, and the Ohio Agricultural Research and Development Center, Wooster, OH 44691. Corresponding author's E-mail: loux.1@osu.edu;

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  • 正文语种 eng
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  • 关键词

    Herbicide-resistant crops; weed interference.;

    机译：抗除草剂的作物;杂草干扰。;

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