giganteus caused by Leptosphaerulina chartarum was observed on 100聽% of the plants evaluated in research plots near Lexington, Kentucky. A greenhouse study was conducted to evaluate the effect of L. chartarum on M.鈥壝椻€?em class="a-plus-plus">giganteus biomass and to identify effective foliar fungicides against the disease. Eleven broad-spectrum fungicides were tested with rates typically used in agronomic crops. Fungicides tested included active ingredients from five different chemical groups, demethylation inhibitors (prothioconazole, tebuconazole, cyproconazole, propiconazole, tetraconazole, flutriafol, and metconazole), quinone outside inhibitors (pyraclostrobin), succinate dehydrogenase inhibitors (boscalid), methyl benzimidazole carbamates (thiophanate-methyl), and chloronitriles (chlorothalonil). Infection by L. chartarum significantly lowered aboveground biomass by an average of 33聽%. Application of cyproconazole, flutriafol, tebuconazole, or prothioconazole significantly reduced disease severity, with cyproconazole and flutriafol ranking best at an average of 29聽% disease control. However, no fungicide treatment resulted in biomass loss abatement. Greater rates or a combination of fungicides might be needed to achieve adequate control." />
Biomass Reducing Potential and Prospective Fungicide Control of a New Leaf Blight of Miscanthus鈥壝椻€?em class="a-plus-plus">giganteus Caused by Leptosphaerulina chartarum
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  • 作者：Monday O. Ahonsi (1)
    Keith A. Ames (2)
    Michael E. Gray (1) (2)
    Carl A. Bradley (1) (2)
  • 关键词：Bioenergy ; Disease ; Feedstock ; Fungicide ; Pithomyces chartarum ; Miscanthus
  • 刊名：Bioenergy Research
  • 出版年：2013
  • 出版时间：June 2013
  • 年：2013
  • 卷：6
  • 期：2
  • 页码：737-745
  • 全文大小：308KB
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    14. Grisham MP, Maroon-Lango CJ, Hale AL (2012) First report of sorghum mosaic virus causing mosaic in / Miscanthus sinensis. Plant Dis 96:150 CrossRef
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  • 作者单位：Monday O. Ahonsi (1)
    Keith A. Ames (2)
    Michael E. Gray (1) (2)
    Carl A. Bradley (1) (2)

    1. Energy Biosciences Institute, University of Illinois, 1206 W. Gregory Dr, 61801, Urbana, IL, USA
    2. Department of Crop Sciences, 1102 S. Goodwin, 61801, Urbana, IL, USA
  • ISSN：1939-1242
文摘
During a multistate survey (2009) of diseases of perennial grasses under consideration as biofuel feedstocks, a new leaf blight of Miscanthus鈥壝椻€?em class="a-plus-plus">giganteus caused by Leptosphaerulina chartarum was observed on 100聽% of the plants evaluated in research plots near Lexington, Kentucky. A greenhouse study was conducted to evaluate the effect of L. chartarum on M.鈥壝椻€?em class="a-plus-plus">giganteus biomass and to identify effective foliar fungicides against the disease. Eleven broad-spectrum fungicides were tested with rates typically used in agronomic crops. Fungicides tested included active ingredients from five different chemical groups, demethylation inhibitors (prothioconazole, tebuconazole, cyproconazole, propiconazole, tetraconazole, flutriafol, and metconazole), quinone outside inhibitors (pyraclostrobin), succinate dehydrogenase inhibitors (boscalid), methyl benzimidazole carbamates (thiophanate-methyl), and chloronitriles (chlorothalonil). Infection by L. chartarum significantly lowered aboveground biomass by an average of 33聽%. Application of cyproconazole, flutriafol, tebuconazole, or prothioconazole significantly reduced disease severity, with cyproconazole and flutriafol ranking best at an average of 29聽% disease control. However, no fungicide treatment resulted in biomass loss abatement. Greater rates or a combination of fungicides might be needed to achieve adequate control.

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