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首页> 外文期刊>American Journal of Experimental Agriculture >Use of Selected Herbicides and Application Methods for Tolerance to Tifton 85 Bermudagrass [Cynodon dactylon (L.) Pers.]
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Use of Selected Herbicides and Application Methods for Tolerance to Tifton 85 Bermudagrass [Cynodon dactylon (L.) Pers.]

机译：精选除草剂的用途和耐Tifton 85百慕大草的应用方法[Cynodon dactylon（L.）Pers。]

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Aims: To evaluate forage tolerance of Tifton 85 bermudagrass to selected pasture herbicides using two application methods: broadcast (BRD) and individual plant treatments (IPT). Study Design: A randomized complete block design was employed with four replications. Place and Duration of Study: Trials were conducted during the 2006 and 2007 growing seasons near Thrall, Texas, (30.35o N, 97.17o W). Methodology: Two spray application methods (BRD and IPT) were compared when using selected herbicides for bermudagrass tolerance. Herbicides evaluated by BRD included picloram plus fluroxypyr, picloram plus fluroxypyr plus metsulfuron-methyl, triclopyr, triclopyr plus fluroxypyr, triclopyr plus metsulfuron-methyl, triclopyr plus fluroxypyr plus metsulfuron-methyl, and metsulfuron-methyl plus dicamba plus 2,4-D. Herbicides evaluated by IPT included triclopyr, triclopyr plus fluroxypyr, and picloram plus fluroxypyr. Bermudagrass injury, yield, and crude protein content were evaluated for application method and herbicide. Results: Rainfall after herbicide application in 2006 was 67% below normal while in 2007 rainfall was 350% above normal. No bermudagrass necrosis or growth reduction were noted in 2006. Triclopyr plus fluroxypyr applied IPT was the only treatment to decrease Tifton 85 dry matter yield at the first harvest, with no effect observed at the second. In 2007, necrosis was greatest with triclopyr plus fluroxypyr applied BRD while triclopyr plus fluroxypyr and triclopyr plus fluroxypyr plus metsulfuron-methyl applied BRD and triclopyr applied IPT caused the greatest growth reduction. Triclopyr and triclopyr plus fluroxypyr applied BRD or IPT and triclopyr plus fluroxypyr plus metsulfuron-methyl applied BRD decreased dry matter yield at the first harvest while only triclopyr alone applied IPT reduced yield at the second. Conclusions: The recurring bermudagrass stunting and yield reduction with triclopyr is consistent with previous forage tolerance research. Metsulfuron methyl plus dicamba plus 2,4-D was the only treatment that exhibited little or no injury, growth reduction, or yield reduction at any time. Producers need to be aware of potential injury issues with triclopyr.
机译：目的：使用两种施用方法（播种（BRD）和单独的植物处理（IPT））来评估Tifton 85百慕大草对所选牧草除草剂的耐受性。研究设计：采用随机完整区组设计，重复四次。研究的地点和时间：在德克萨斯州萨尔附近的2006年和2007年生长季节进行了试验（N为30.35 o ，W为97.17 o ）。方法：当使用选择的除草剂耐受百慕大草时，比较了两种喷雾施用方法（BRD和IPT）。经BRD评估的除草剂包括吡咯烷加氟草烟，吡咯仑加氟草烟加甲磺隆甲基，敌百虫，三氯吡喃加氟草烟，敌百草加氟磺草隆甲基，三氯吡喃加氟草烟加甲磺隆甲基，甲磺隆4-甲基加麦草畏。 IPT评估的除草剂包括included草、,草加氟草烟和吡咯兰加氟草烟。对百慕大草的伤害，产量和粗蛋白含量进行了评估，以确定施用方法和除草剂。结果：2006年使用除草剂后的降雨量比正常低67％，而2007年的降雨量比正常高350％。 2006年未发现百慕大草坏死或生长减少。使用三氯吡plus加氟草烟的IPT是唯一在第一次收获时降低Tifton 85干物质产量的方法，在第二次收获时未见效果。 2007年，百草枯加氟草烟施用BRD的坏死最大，而百草枯加氟草烟和百草枯加氟草烟再加甲磺隆的BRD和百草枯IPT造成的生长减少最大。三氯吡草和敌百虫加氟草烟施用BRD或IPT，三氯吡喃加氟草烟加甲磺隆甲基溴化物施用BRD在第一次收获时降低了干物质产量，而仅单独施用敌百虫在第二次收获时降低了产量。结论：旋毛虫对百慕大草的反复发育迟缓和减产与以前的耐草性研究一致。甲基磺草隆加麦草畏加2,4-D是唯一在任何时候都几乎没有或没有损伤，生长减少或产量减少的治疗方法。生产者需要意识到毛虫的潜在伤害问题。

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