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Herbicides for Establishing Switchgrass in the Central and Northern Great Plains

机译：在中北部和大平原建立柳枝Switch的除草剂

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摘要

Weed interference limits switchgrass (Panicum virgatum L.) establishment from seed. Our objectives were to determine the effect of selected post-plant, preemergence herbicides on stand establishment and subsequent biomass yields of adapted upland switchgrass cultivars grown in three environments in the Central and Northern Great Plains. A separate experiment was conducted in eastern Nebraska to determine if there were any differences among switchgrass ecotypes for herbicide tolerance to the optimal herbicide combination. Herbicides applied immediately after planting were different concentrations of atrazine [Aatrex 4L~?; 6-chloro-N-ethyl-N'-(1-methylethyl)-l,3,5-triazine-2,4-diamine],rnquinclorac (Paramount~?; 3,7-Dichloro-8-quinolinecarboxylic acid), atrazine+quinclorac, imazapic {Plateau~?; 2-[4,5-dihydro-4-methyl-4-(1-methylethyl)-5-oxo-1H-imidazol-2-yl]-5-methyl-3-pyridinecarboxylic acid}, and quinclorac+ imazapic. Herbicide efficacy was determined by measuring stand frequency of occurrence and biomass yield the year after establishment. The application of quinclorac plus atrazine resulted in acceptable stands and high biomass yields. Imazapic often reduced switchgrass stands in comparison to the nontreated control and is not recommended for switch-grass establishment. In the multi-state trials, the herbicide by cultivar interaction was not significant for stands or biomass yields, indicating that the effects of herbicides on switchgrass stands and biomass yields were consistent over the upland cultivars used in the trials. No differences were detected among switchgrass lowland and upland ecotypes for tolerance to atrazine and quinclorac. Quinclorac, which provides effective control of grassy weeds, and herbicides such as atrazine which provide good broadleaf weed control are an excellent herbicide combination for establishing switchgrass for biomass production in the Great Plains and the Midwest.
机译：杂草干扰限制了种子的柳枝（（Panicum virgatum L.）的建立。我们的目标是确定在大平原中部和北部三个环境中生长的适应性旱生柳枝栽培品种的选后苗后除草剂对林分建立和随后生物量产量的影响。在内布拉斯加州东部进行了一项单独的实验，以确定柳枝eco生态型之间除草剂对最佳除草剂组合的耐受性是否存在差异。种植后立即施用的除草剂为不同浓度的at去津[Aatrex 4L〜？ 6-氯-N-乙基-N'-（1-甲基乙基）-1,3,5-三嗪-2,4-二胺]，喹哪拉克（至上; 3,7-二氯-8-喹啉羧酸），阿特拉津+喹克拉拉克，伊马沙比{高原〜？ 2- [4，5-二氢-4-甲基-4-（1-甲基乙基）-5-氧代-1H-咪唑-2-基] -5-甲基-3-吡啶羧酸}和喹克拉拉+依马平。除草剂的效力通过测定建立后一年的林分发生频率和生物量产量来确定。 quinclorac和atrazine的施用产生了可接受的林分和高生物量产量。与未经处理的对照相比，Imazapic经常会降低柳枝stands的生长，因此不建议用于柳枝switch的建立。在多州试验中，通过品种相互作用的除草剂对于林分或生物量产量无显着影响，这表明除草剂对柳枝stands林和生物量产量的影响与试验中所用的旱地品种一致。在柳枝low低地和高地生态型之间，对阿特拉津和喹克洛拉的耐受性没有差异。提供有效控制草杂草的Quinclorac和提供良好的阔叶杂草控制的除草剂（如阿特拉津）是在大平原和中西部建立柳枝for生物量生产的优良除草剂组合。

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  • 来源
    《Bioenergy research》 |2010年第4期|p.321-327|共7页
  • 作者

    Robert B. Mitchell; Kenneth P. Vogel; John Berdahl; Robert A. Masters;

  • 作者单位

    Grain, Forage, and Bioenergy Research Unit, Agricultural Research Service, United States Department of Agriculture, University of Nebraska, Biochemistry Hall, East Campus, Lincoln, NE 68583-0737, USA;

    rnGrain, Forage, and Bioenergy Research Unit, Agricultural Research Service, United States Department of Agriculture, University of Nebraska, Biochemistry Hall, East Campus, Lincoln, NE 68583-0737, USA;

    rnAgricultural Research Service, United States Department of Agriculture, Highway 6 South, PO Box 459, Mandan, ND 58554, USA;

    rnDow AgroSciences, Indianapolis, IN 46205, USA;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    bioenergy; dedicated energy crops; switchgrass; weed control;

    机译：生物能源专用能源作物;柳枝;除草;

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