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Integrated Systems for Control and Management of Downy Brome (Bromus tectorum) in Cropland

Published online by Cambridge University Press:  12 June 2017

Gail A. Wicks
Gail A. Wicks*
Affiliation:
Dep. Agron., Univ. of Nebraska, North Platte, NE 69101
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Extract

Downy brome (Bromus tectorum L. # BROTE) may be a troublesome weed in winter small grains, perennial legumes, perennial grasses grown for seed, and orchards. In Nebraska, winter wheat (Triticum aestivum L.) yields have been depressed 30% by downy brome populations of 11 to 22 plants/m2 (8). In Oregon, downy brome densities of 108 to 160 and 538 plants/m2 reduced yields by 40 and 92%, respectively (22, 23). In Idaho, wheat yields were depressed 20 to 40% with 55 to 110 plants/m2 (18). Downy brome has also been shown to lower yields and quality of hay from infested fields of alfalfa (Medicago sativa L.) (29). In perennial grass seed fields, downy brome may cause a serious seed quality problem (16). Some grass seed lots have contained as much as 50 to 75% downy brome seed.

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References

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