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首页> 外文期刊>Weed technology >Selective Weed Control with Glyphosate in Glyphosate-Resistant Spring Wheat (Triticum aestivum)
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Selective Weed Control with Glyphosate in Glyphosate-Resistant Spring Wheat (Triticum aestivum)

机译：抗草甘膦春小麦中的草甘膦选择性除草

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Glyphosate-resistant spring wheat is being developed and may soon be available to growers. Field experiments were conducted to examine the effect of various rates and application timings of glyphosate on the tolerance of glyphosate-resistant spring wheat and the level of weed control attained with glyphosate in wheat. Glyphosate-resistant wheat exhibited excellent tolerance to glyphosate applied at the one- to two- or four- to five-leaf stages at rates up to 1,780 g ae/ha, representing a fourfold safety margin to the proposed field use rate. Glyphosate at 445 g/ha reduced shoot biomass of green foxtail, wild oat, redroot pigweed, and wild mustard > 95% in glyphosate-resistant wheat in all years, but wild buckwheat biomass was only reduced 67 to 75% at doses up to 890 g/ha. Glyphosate applied in-crop at 667 g/ha reduced quackgrass biomass by 97 to 99%. Comparison of glyphosate with other spring wheat herbicides indicated that glyphosate provided similar or better in-crop control of several weed species. Yield of weed-infested glyphosate-resistant spring wheat responded positively to glyphosate in all years.
机译：抗草甘膦的春小麦正在开发中，可能很快就会提供给种植者。进行了田间试验，研究了草甘膦的不同施用量和施用时间对抗草甘膦的春小麦的耐性以及小麦中使用草甘膦达到的除草水平。抗草甘膦的小麦对以1到2或4到5到5片叶阶段施用的草甘膦表现出极好的耐受性，施用量高达1,780 g ae / ha，这代表了建议的田间使用率的四倍安全系数。在所有抗草甘膦小麦中，草甘膦以445 g / ha的比例降低了绿狐尾，野燕麦，红根藜和野芥菜的茎生物量> 95％，但当剂量高达890时，野生荞麦生物量仅减少了67％至75％。克/公顷。草甘膦以667 g / ha的量施用在作物上，使草草生物量减少了97％至99％。草甘膦与其他春小麦除草剂的比较表明，草甘膦可对几种杂草进行类似或更好的作物内防除。多年以来，杂草侵染的抗草甘膦春小麦的产量对草甘膦呈积极反应。

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