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Prescribed burns help control weed

Issue Date: May 14, 2014

U.S. Department of Agriculture researchers are looking for ways to use "prescribed fire" to control a weed that is colonizing disturbed soils and overtaking Western grazing land, including California rangeland. When fully grown, the weed, called purple threeawn, has sharp prongs that make it undesirable to cattle. When cattle have no other choices and are forced to eat purple threeawn as a staple of their diet, they fail to thrive.

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