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    • Rangeland Ecology & Management, Volume 58 (2005)
    • Rangeland Ecology & Management, Volume 58, Number 3 (May 2005)
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    Relationships Between Chihuahuan Desert Perennial Grass Production and Precipitation

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    Author
    Khumalo, Godfrey
    Holechek, Jerry
    Issue Date
    2005-05-01
    Keywords
    cattle
    climate
    forage
    rainfall
    rangelands
    
    Metadata
    Show full item record
    Citation
    Khumalo, G., & Holechek, J. (2005). Relationships between Chihuahuan Desert perennial grass production and precipitation. Rangeland Ecology & Management, 58(3), 239-246.
    Publisher
    Society for Range Management
    Journal
    Rangeland Ecology & Management
    URI
    http://hdl.handle.net/10150/643259
    DOI
    10.2111/1551-5028(2005)58[239:RBCDPG]2.0.CO;2
    Additional Links
    https://rangelands.org/
    Abstract
    Perennial grass production on the Chihuahuan Desert Rangeland Research Center in south-central New Mexico was correlated with precipitation characteristics over a 34-year period. Total December through September precipitation was highly correlated (r = +0.77, n = 34) with perennial grass production. Practical generalized indices were developed that could be broadly applied by managers for predicting perennial grass production from precipitation characteristics. Perennial grass production and precipitation data on 3 separate pastures were collected over a 6-year period to evaluate the reliability of models to predict perennial grass production. Simple linear, 2-variable, quadratic, and polynomial regression models gave perennial grass production estimates that were well correlated with actual values (r = +0.85 to +0.91, n = 17) across the 3 pastures. The quadratic regression model (Y = 4.04 – 0.24X + 0.012 X2, X = December through September precipitation, Y = forage production, n = 34, r = 0.85) gave the most accurate predicted values. Our quadratic regression model should be of practical use to ranchers and range managers on Chihuahuan Desert upland rangelands receiving 200-300 mm annual precipitation, with loamy to sandy loam soils and in mid- to late-seral ecological condition. These conditions match those generally found on Chihuahuan Desert Uplands. We consider our quadratic regression model to be highly useful over large areas to ranchers in southern New Mexico, southeastern Arizona, southwestern Texas, and north-central Mexico.  
    Type
    text
    Article
    Language
    en
    ISSN
    0022-409X
    ae974a485f413a2113503eed53cd6c53
    10.2111/1551-5028(2005)58[239:RBCDPG]2.0.CO;2
    Scopus Count
    Collections
    Rangeland Ecology & Management, Volume 58, Number 3 (May 2005)

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