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首页> 外文期刊>South African Journal of Plant and Soil >Efficacy of glyphosate, alternative post-emergence herbicides and tillage for control of Cynodon dactylon
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Efficacy of glyphosate, alternative post-emergence herbicides and tillage for control of Cynodon dactylon

机译：草甘膦，其他出苗后除草剂和耕作对犬牙根控制的功效

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Cynodon dactylon (L.) Pers (cynodon) is a major weed in the South African sugarcane industry. Current recommendations involve repeated application of glyphosate for prolonged control. This paper describes three trials of a study to identify alternative treatments. Trial 1 screened seven non-glyphosate candidate chemical treatments, trial 2 investigated the effect of tillage prior to herbicide application, and trial 3 compared the best candidate product with glyphosate for phytotoxicity to sugarcane. In trial 1, fluazifop-butyl, imazapyr and glyphosate all provided > 95% control for up to 19 weeks after treatment (WAT). In trial 2, treatment of cynodon without prior tillage, with glyphosate and imazapyr provided > 90% control up to 20 WAT. However, in cynodon subjected initially to tillage, glyphosate efficacy was reduced to 60% at 12 WAT, whereas imazapyr provided 90% control for up to 20 WAT. Tillage plus a tank mixture of glyphosate plus imazapyr provided significantly higher control than either component when applied separately. Imazapyr suppressed pioneer species to a greater extent than glyphosate and, in trial 3, was not more phytotoxic than glyphosate under the tested conditions. Conclusions are that a) imazapyr is a promising candidate for cynodon control, with further work required to provide recommendations; and b) minimum tillage using glyphosate for sugarcane eradication is preferred to ploughing out stools in cynodon-infested fields.
机译：Cynodon dactylon（L.）Pers（cynodon）是南非甘蔗业的主要杂草。当前的建议涉及重复施用草甘膦以延长控制时间。本文介绍了一项研究的三项试验，以确定替代疗法。试验1筛选了7种非草甘膦候选化学处理方法，试验2研究了除草剂施用前耕作的效果，试验3比较了最佳候选产品与草甘膦对甘蔗的植物毒性。在试验1中，在治疗后长达19周（WAT）的情况下，氟苯哌丁酯，吡虫啉和草甘膦都提供了95％以上的对照。在试验2中，无需事先耕种的草za，使用草甘膦和依马普吡治疗，可控制90％以上的细菌，最多可达到20 WAT。但是，在最初进行耕作的犬齿龙中，草甘膦的功效在12 WAT时降低到60％，而imazapyr在最高20 WAT时提供90％的控制。耕作加上草甘膦和依马普比的罐装混合物比单独施用时提供明显更高的控制力。伊马沙比比草甘膦在更大程度上抑制了先驱物种，在试验3中，在试验条件下，草甘膦的植物毒性并不比草甘膦强。结论是：a）吡虫啉是犬齿控制的有希望的候选者，需要进一步的工作以提供建议; b）尽量减少使用草甘膦进行甘蔗根除的耕作，而不是在犬牙系出没的田间耕种大便。

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