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Relative annual broomweed abundance as related to selected climatic factors

Relative annual broomweed abundance as related to selected climatic factors

Journal of Range Management 32(5): 401-403

Regression models were developed to predict relative abundance of annual broomweeds [Xanthocephalum spp.] on a Texas [USA] rangeland as a function of selected climatic factors. Based on 16 yr data, above-average precipitation in May and below-average daily maximum temperatures in April were the principal climatic factors most closely associated with heavy infestations of annual broomweeds for any given year (R2 = 0.902). Similar models developed from bimonthly and trimonthly averages were less precise than monthly averages for predicting relative abundance of annual broomweed.

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Accession: 000734546

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DOI: 10.2307/3898027

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