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首页> 外文会议>Australian Society of Sugar Cane Technologists;Australian Society of Sugar Cane Technologists Conference >NUTGRASS HERBICIDE MANAGEMENT: RESULTS OF TWO POT TRIALS
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NUTGRASS HERBICIDE MANAGEMENT: RESULTS OF TWO POT TRIALS

机译：坚果类除草剂管理：两次盆栽试验的结果

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EFFECTIVE NUTGRASS CONTROL is crucial to maintain an optimal sugarcane yield. In theMackay area, yield losses due to competition with nutgrass can be up to 27 % in dryland and up to 20% in irrigated systems. Several herbicide strategies were tested in pottrials in 2010 and 2011 to find the best option for long-term control of nutgrass. Bothtrials were arranged as randomised complete block designs with six replications, 13herbicide strategies and untreated controls. Strategies included pre-emergent herbicidesand / or post-emergent herbicides sprayed in one or two applications. In the two trials,both single and double applications of Roundup® CT (450 g/L glyphosate) were veryefficient in regard to desiccation of aerial parts and reduction of the production of activetubers by 78–98%. Viability of the tubers produced was also reduced (0–42%).Sempra® (750 g/kg halosulfuron-methyl) at 90 g/ha reduced by 90–92% the productionof active tubers and only 0–25% of these were viable (viability of tubers in untreatedcontrols was 95%–97%). However, only a slow and modest impact was visible on aerialparts. Hero® (ethoxysulfuron 600 g/kg) impacted on the production of active tubers byup to 98% and 0–20% of these were viable. With Krismat®WG (trifloxysulfuron sodium8g/kg, ametryn 731 g/kg), 87% fewer active tubers were produced but 17%–65% werestill viable. Flame® (imazapic 240 g/L) applied pre-emergence totally prevented theproduction of active tubers. When Flame® was applied post emergence, the productionof active tubers was reduced by 77%–88% and their viability ranged from 0 to 56%.Other tested products (2,4-D, MSMA, S-metolachlor) were not suitable long-termnutgrass management options. Further research is needed on Flame® as it couldpotentially be an effective pre-emergent option for nutgrass control.
机译：有效的坚果控制对于维持最佳的甘蔗产量至关重要。在里面 麦凯地区，由于与坚果草竞争而导致的产量损失在干旱地区可能高达27％ 土地和高达20％的灌溉系统。在锅中测试了几种除草剂策略 在2010年和2011年进行的试验发现了长期控制坚果草的最佳选择。两个都 试验安排为随机完整区组设计，共重复六次，其中13次 除草剂策略和未经处理的对照。策略包括芽前除草剂 和/或芽后除草剂以一种或两种方式喷洒。在这两次审判中 Roundup®CT（450 g / L草甘膦）的单次和两次施用都非常 高效地进行航空零件的干燥和减少活性物质的生产 块茎的比率为78–98％。生产的块茎的活力也降低了（0–42％）。 以90克/公顷的Sempra®（750克/千克甲基卤磺隆）减少90-92％的产量 的活动块茎中只有0–25％存活（未处理的块茎存活率 对照组为95％–97％）。但是，在空中只能看到缓慢而适度的撞击 部分。 Hero®（乙氧基磺隆600克/千克）对活性块茎的生产产生了影响 其中多达98％和0–20％可行。与Krismat®WG（三氟磺隆钠 8g / kg，atricn 731 g / kg），生产的块茎减少了87％，但生产的块茎减少了17％–65％ 仍然可行。出苗前使用Flame®（imazapic 240 g / L）完全预防 活跃块茎的生产。在出现后应用Flame®时，生产 活动块茎的数量减少了77％–88％，生存力从0到56％不等。 其他测试产品（2,4-D，MSMA，异丙甲草胺）长期不适合 坚果草管理选项。可能需要对Flame®进行进一步的研究 可能是一种有效的出苗前控制坚果草的选择。

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