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Rotational Cropping Systems to Reduce Cheat (Bromus secalinus) Densities

Published online by Cambridge University Press:  20 January 2017

Jon C. Stone ,
Thomas F. Peeper  and
Amanda E. Stone
Jon C. Stone*
Affiliation:
Department of Plant and Soil Sciences, Oklahoma State University, Stillwater, OK 74078
Thomas F. Peeper
Affiliation:
Department of Plant and Soil Sciences, Oklahoma State University, Stillwater, OK 74078
Amanda E. Stone
Affiliation:
Department of Plant and Soil Sciences, Oklahoma State University, Stillwater, OK 74078
*
Corresponding author's E-mail: [email protected]
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Abstract

In the Southern Great Plains, producers of hard red winter wheat seek sustainable methods for controlling cheat and improving economic returns. Experiments were conducted at two sites in north-central Oklahoma to determine the effect of cheat management programs, with various weed control strategies, on cheat densities and total net returns. The cheat management programs, initiated following harvest of winter wheat, included conventionally tilled, double-crop grain sorghum (Sorghum bicolor L.) followed by soybean (Glycine max L.); and continuous winter wheat. Rotating out of winter wheat for one growing season increased yield of succedent wheat up to 32% and 42% at Billings and Ponca City, respectively. Dockage due to cheat in the succedent wheat was reduced up to 78% and 87% by rotating out of winter wheat for one growing season at Billings and Ponca City, respectively. Cheat management programs including a crop rotation with herbicides applied to the grain sorghum, except for an application of atrazine + metolachlor at Ponca City, improved total net returns over the nontreated continuous wheat option. Cheat panicles in the succedent wheat were reduced up to 87% by rotation out of winter wheat for one growing season.

Keywords

Atrazine + metolachlorcheat, Bromus secalinus L. # BROSEgrain sorghum, Sorghum bicolor (L.) Moench ‘Pioneer 8500’, ‘Dekalb DK28E’soybean, Glycine max (L.) Merr., ‘Dekalb CX367RR’wheat, Triticum aestivum L. ‘2137’Economicsnet returnsOklahomaFb, followed byNSD, no significant differenceOM, organic matter
Type
Research Article
Information
Weed Technology , Volume 20 , Issue 2 , June 2006 , pp. 445 - 452
Copyright
Copyright © Weed Science Society of America 

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Footnotes

Current address: District Conservationist, USDA-Natural Resources Conservation Service, 5501 North Pleasant View Road, Newkirk, OK 74647.

References

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