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Postemergence Control of Annual Bluegrass (Poa annua spp. reptans) in Creeping Bentgrass (Agrostis stolonifera) Turf

Published online by Cambridge University Press:  20 January 2017

Paul B. Woosley ,
David W. Williams  and
A. J. Powell Jr.
Paul B. Woosley
Affiliation:
Department of Agronomy, Room N222, Agricultural Sciences Ctr. North, University of Kentucky, Lexington, KY 40546-0091
David W. Williams*
Affiliation:
Department of Agronomy, Room N222, Agricultural Sciences Ctr. North, University of Kentucky, Lexington, KY 40546-0091
A. J. Powell Jr.
Affiliation:
Department of Agronomy, Room N222, Agricultural Sciences Ctr. North, University of Kentucky, Lexington, KY 40546-0091
*
Corresponding author's E-mail: dwilliam@uky.edu
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Abstract

The postemergence herbicide ethofumesate and the plant growth regulator paclobutrazol were evaluated for annual bluegrass control in creeping bentgrass turf managed as golf fairways. Both products were applied under several different timing regimes relative to the time of the year. Paclobutrazol treatments provided significantly greater annual bluegrass control than ethofumesate. There were no differences between rates of paclobutrazol (0.28 and 0.14 kg ai/ha) when applied from spring through summer. Annual bluegrass control after spring and summer applications of paclobutrazol was 85% or more. Clipping weight data indicated that paclobutrazol suppressed growth in annual bluegrass longer than in creeping bentgrass. It was concluded that prolonged suppression of annual bluegrass by paclobutrazol resulted in creeping bentgrass dominance and subsequent annual bluegrass control. Additionally, applications of ethofumesate in autumn–winter, followed by paclobutrazol applied in spring–summer, provided significant control of annual bluegrass in 1 yr of the study.

Keywords

Ethofumesatepaclobutrazol, (±)-(R∗R∗)-β-([4-chlorophenyl]-methyl)-α-(1,1-dimethylethyl)-1H-1,2,4-triazole-1-ethanolannual bluegrass, Poa annua spp. annua L., spp. reptans Hausskn. #3 POAANcreeping bentgrass Agrostis stolonifera L. ‘Penncross’, ‘Providence’Growth suppressionAUPPC, area under percent Poa curvesDAA, days after applicationGA, gibberellic acid
Type
Research
Information
Weed Technology , Volume 17 , Issue 4 , December 2003 , pp. 770 - 776
Copyright
Copyright © Weed Science Society of America 

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References

Literature Cited

Branham, B. 1991. Dealing with Poa annua . Golf Course Manag 59:46–60.Google Scholar
Breuninger, J. 1993. Poa annua control in bentgrass greens. Golf Course Manag 61:68–73.Google Scholar
Campbell, C. L. and Madden, L. V. 1990. Introduction to Plant Disease Epidemiology. New York: J. Wiley. Pp. 192–193.Google Scholar
Dernoeden, P. H. and Turner, T. R. 1988. Annual bluegrass control and tolerance of Kentucky bluegrass and perennial ryegrass to ethofumesate. Hortscience 23:565–567.CrossRefGoogle Scholar
Gibeault, V. A. and Goetze, N. R. 1972. Annual meadowgrass. J. Sports Turf Res. Inst 48:9–19.Google Scholar
Goss, R. L. 1964. Preemergence control of annual bluegrass (Poa annua L). Agron. J. 56:479–481.CrossRefGoogle Scholar
Isgrigg, J. III, Yelverton, F. H., and Coble, H. D. 1998. The effect of paclobutrazol on the relative growth of annual bluegrass and creeping bentgrass. Proc. South. Weed Sci. Soc 51:248.Google Scholar
Johnson, B. J. 1983. Response to ethofumesate of annual bluegrass (Poa annua) and overseeded bermudagrass (Cynodon dactylon). Weed Sci. 31:385–390.Google Scholar
Johnson, B. J., Landry, G. W. Jr., and Karnok, K. J. 1989. Tolerance of bentgrass to amount, frequency and timing of ethofumesate applications. Hortscience 24:102–104.CrossRefGoogle Scholar
Johnson, B. J. and Murphy, T. R. 1995. Effect of paclobutrazol and flurprimidol on suppression of Poa annua spp. reptans in creeping bentgrass (Agrostis stolonifera) greens. Weed Technol. 9:182–186.CrossRefGoogle Scholar
Neylan, J., Dickson, D., Robinson, M., and Manning, P. 1997. Control of Poa annua in creeping bent (Agrostis stolonifera) greens. Int. Turf. Soc. Res. J. 8:1398–1406.Google Scholar
Rademacher, W. 2000. Growth retardants: effects on gibberellin biosynthesis and other metabolic pathways. Annu. Rev. Plant Physiol. Plant Mol. Biol 51:501–531.CrossRefGoogle ScholarPubMed
[SAS] Statistical Analysis Systems. 1999–2001. SAS User's Guide. Version 8. Cary, NC: Statistical Analysis Systems Institute. (Online version).Google Scholar