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    • Rangeland Ecology & Management, Volume 67 (2014)
    • Rangeland Ecology & Management, Volume 67, Number 2 (March 2014)
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    Combustion of cattle fecal pats ignited by prescribed fire

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    Author
    Scasta, J. D.
    Weir, J. R.
    Engle, D. M.
    Carlson, J. D.
    Issue Date
    2014-03
    Keywords
    Disturbance
    Ecology
    Fuel
    Grazing
    Parasites
    Weather
    
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    Citation
    Scasta, J. D., Weir, J. R., Engle, D. M., & Carlson, J. D. (2014). Combustion of cattle fecal pats ignited by prescribed fire. Rangeland Ecology & Management, 67(2), 229–233.
    Publisher
    Society for Range Management
    Journal
    Rangeland Ecology & Management
    URI
    http://hdl.handle.net/10150/657012
    DOI
    10.2111/REM-D-13-00113.1
    Additional Links
    https://rangelands.org/
    Abstract
    Cattle fecal pats readily ignite, are a common source of spot fires, and release extreme amounts of energy when burning. Moreover, dung-dependent livestock parasites can be reduced by combusting fecal pats in prescribed burns. We conducted a study to identify factors that influence combustion of cattle fecal pats. Fifty fecal pats were located in each burn unit before 10 prescribed fires and then rated for combustion after each fire. Combustion of cattle fecal pats was highly variable across fires, with average proportion of combustion of individual pats from the 10 fires ranging from 2-±-2 to 98-±-1% (mean-±-SE). Of 10 fecal pat, fuel, and weather variables assessed, only fecal pat condition, 10-h time-lag dead fuel moisture (DFM), and fuel load entered as variables in a stepwise selection method of constructing a multiple regression model of combustion of fecal pats (R2-=-0.94, P-<-0.01). Condition of fecal pats (a function of elapsed time since deposition, fuel moisture, and decomposition) explained the greatest variation of pat combustion (partial R2-=-0.75), followed by 10-h DFM (partial R2-=-0.12) and fuel load (partial R2-=-0.07). Combustion was <-10% when 10-h DFM exceeded 13% regardless of pat condition. For every 1 Mg-·-ha-1 increase in fuel load, combustion of older and drier fecal pats increased by about 7%, but combustion of fresh fecal pats always averaged <-20% and was unrelated to fuel load. Our results demonstrate that combustion of pats can be managed to meet a variety of ecological and production goals. © 2014 The Society for Range Management.
    Type
    Article
    text
    Language
    en
    ISSN
    0022-409x
    ae974a485f413a2113503eed53cd6c53
    10.2111/REM-D-13-00113.1
    Scopus Count
    Collections
    Rangeland Ecology & Management, Volume 67, Number 2 (March 2014)

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