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Common Bermudagrass (Cynodon dactylon) Management in Cool-Season Turfgrass

Published online by Cambridge University Press:  12 June 2017

David W. Cudney ,
Clyde L. Elmore ,
Victor A. Gibeault  and
John S. Reints
David W. Cudney
Affiliation:
Department of Botany and Plant Science, University of California, Riverside, CA 92521
Clyde L. Elmore
Affiliation:
Vegetable Crops Department, University of California, Davis, CA 95616
Victor A. Gibeault
Affiliation:
Department of Botany and Plant Science, University of California, Riverside, CA 92521
John S. Reints
Affiliation:
Department of Botany and Plant Science, University of California, Riverside, CA 92521
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Abstract

Common bermudagrass is an invasive, perennial weed of cool-season turfgrass in California. Complete renovation of the infested area has been the only practical method of restoring desirable cool-season turfgrasses. In studies in southern and northern California, common bermudagrass was suppressed with sequential herbicide applications, allowing seedling establishment and regrowth of established cool-season turfgrass species. One application of fenoxaprop, triclopyr, or their combinations did not control common bermudagrass. Sequential applications of these herbicide treatments resulted in 99, 94, and 100% control of common bermudagrass, respectively, and resulted in establishment of seeded perennial ryegrass in Riverside, CA, over a 2-yr period. Similar results were obtained in the recovery of established tall fescue from a common bermudagrass/tall fescue turfgrass mixture in Willows, CA. Both fenoxaprop and triclopyr can reduce emergence and stunt seedling growth of perennial ryegrass and tall fescue. Greenhouse studies showed that stunting and stand loss of tall fescue and perennial ryegrass seedlings could be reduced by delaying applications from PRE to the two-leaf stage.

Keywords

Fenoxaprop, (±)-2-[4-[(6-chloro-2-benzoxazolyl)oxy]phenoxy]propanoic acidtriclopyr, [(3,5,6-trichloro-2-pyridinyl)oxy]acetic acidbermudagrass Cynodon dactylon (L.) Pers. # CYNDA, perennial ryegrass (Lolium perenne L.), tall fescue (Festuca arundinacea Schreb.)Competitionsequential herbicide applicationssuppressionCYNDAPost, postemergencePRE, preemergenceWAT, weeks after treatment
Type
Research
Information
Weed Technology , Volume 11 , Issue 3 , September 1997 , pp. 478 - 483
Copyright
Copyright © 1997 by the Weed Science Society of America 

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References

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