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    • University of Missouri-Columbia
    • Graduate School - MU Theses and Dissertations (MU)
    • Theses and Dissertations (MU)
    • Dissertations (MU)
    • 2010 Dissertations (MU)
    • 2010 MU dissertations - Freely available online
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    Reducing ergovaline and ergot alkaloid concentrations through fertilizer, herbicide and clipping management

    Rogers, Wendi Marie, 1974-
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    [PDF] research.pdf (2.557Mb)
    Date
    2010
    Format
    Thesis
    Metadata
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    Abstract
    Animals grazing tall fescue grass (Lolium arundinaceum) infected with Neotyphodium coenophialum consume the toxins ergovaline and other ergot alkaloids. This research included a series of experiments with two overall objectives: 1) to explore management practices that might reduce alkaloid concentration and 2) to estimate if change in management was economically feasible. Three experiments in this study resulted in reduced ergovaline concentration. The first experiment showed use of poultry litter rather than chemical NPK reduced ergovaline by at least 124 [mu] kg-1 DM. Another experiment showed the herbicide clethodim reduced ergovaline up to 72%. A third experiment, conducted with Clemson University and the University of Georgia, showed that monthly clipping of tall fescue reduced ergovaline in the Spring to the point of partial alkaloid suppression. Economic analysis estimated that clethodim-treated forage would produce the highest calving rates and stocker gains and was the most economically beneficial of all practices studied.
    URI
    https://hdl.handle.net/10355/8304
    https://doi.org/10.32469/10355/8304
    Degree
    Ph. D.
    Thesis Department
    Agronomy (MU)
    Rights
    OpenAccess.
    This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 License.
    Collections
    • 2010 MU dissertations - Freely available online
    • Plant Sciences electronic theses and dissertations (MU)

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