Whether herbicides used in transgenic, herbicide-resistant crops have negative effects on those crops has been controversial. Most all of the data on this topic has been on glyphosate-resistant (GR) soybean, with little information available on GR and glufosinate-resistant (GluR) maize. A GR plus GluR maize variety was evaluated in the greenhouse and the field for effects of glyphosate and glufosinate on growth, mineral content, and yield. Treatments were: 1) a herbicide-free control; 2) 980 g acid equivalent (a.e.) ha-1 glyphosate at 21 days after emergence (DAE); 3) 600 g active ingredient (a.i.) ha-1 glufosinate at 21 DAE; 4) sequential applications of glyphosate at 520 and 980 g a.e. ha-1 at 14 and 28 DAE, respectively; 5) sequential applications of glufosinate at 300 and 300 g a.i. ha-1 at 14 and 28 DAE, respectively; and 6) sequential application of glyphosate (980 g a.e. ha-1) and glufosinate (600 g a.i. ha-1) at 14 and 28 DAE, respectively. None of the herbicide treatments affected plant growth, yield, or content of N, P, K, Ca, Mg, S, Mn, Fe, Cu, or Zn in the greenhouse or field. In grain of field-grown plants, no glufosinate was found and glyphosate (0.12 ng g-1) was only found in the sequential glyphosate treatment.

中文翻译：

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草甘膦和草铵膦对抗草甘膦和草铵膦玉米的生长、矿物质含量和产量缺乏影响。

用于转基因、抗除草剂作物的除草剂是否对这些作物产生负面影响一直存在争议。有关该主题的大部分数据都是关于抗草甘膦 (GR) 大豆，而关于 GR 和抗草铵膦 (GluR) 玉米的信息很少。在温室和田间评估了 GR + GluR 玉米品种的草甘膦和草铵膦对生长、矿物质含量和产量的影响。处理为：1)无除草剂对照；2)出苗后21天(DAE)980g酸当量(ae)ha-1草甘膦；3)600g活性成分(ai)ha-1草铵膦，21DAE；4) 分别在 14 和 28 DAE 时顺序施用 520 和 980 g ae ha-1 的草甘膦；5)分别在14和28 DAE时顺序施用300和300 g ai ha-1的草铵膦；6)分别在14和28DAE时顺序施用草甘膦(980g ai ha-1)和草铵膦(600g ai ha-1)。所有除草剂处理均不影响温室或田间的植物生长、产量或 N、P、K、Ca、Mg、S、Mn、Fe、Cu 或 Zn 含量。在田间种植的植物的籽粒中，未发现草铵膦，仅在连续草甘膦处理中发现草甘膦（0.12 ng g-1）。