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CitationWisiol, K. (1984). Estimating grazingland yield from commonly available data. Journal of Range Management, 37(5), 471-475.
PublisherSociety for Range Management
JournalJournal of Range Management
AbstractRange managers must often estimate or predict annual forage yield at a distance, from minimal data, or for a variety of sites. This study compared and modified 6 simple formulas potentially useful for this purpose. The grazingland data that were used represented 44 sites on 5 continents. Soil texture at site affected accuracy of all formulas. Shrubbiness affected accuracy of formulas based on evapotranspiration. Some formulas modified to include past-year yield as a variable were fairly accurate over a variety of grazinglands. An equation based only on past-year yield predicted yield within an average of 34% at new sites. Equations that incorporated past-year yield, used a measure of current effective moisture, and had a limiting-factor approach estimated current yield within an average of 18-19% at new sites.