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Response of Two Annual Bluegrass Varieties to Preemergence and Postemergence Rimsulfuron

Published online by Cambridge University Press:  20 January 2017

Glenn Wehtje  and
Robert H. Walker
Glenn Wehtje
Affiliation:
Department of Agronomy and Soils, Auburn University, Auburn, AL 36849
Robert H. Walker
Affiliation:
Department of Agronomy and Soils, Auburn University, Auburn, AL 36849
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Abstract

In greenhouse studies, flowering annual bluegrass Poa annua L. var. annua (winter annual) and P. annua L. var. reptans (short-lived perennial) were treated postemergence with rimsulfuron at 54 g ai/ha in such a manner as to permit herbicide interception only by the foliage, interception only by the soil, and interception by both foliage and soil, as would occur in a typical application. The foliar-only, soil-only, and soil + foliar applications provided 57, 73, and 84% control, respectively, as averaged over all other experimental variables. Greater efficacy of the soil-only and soil + foliar applications indicated the importance of root absorption for annual bluegrass control with rimsulfuron. Adjuvant addition was beneficial to postemergence activity only at 18 g/ha, which is below the registered rate. Adjuvant-based control improvement at this rate was inconsistent and generally independent of the adjuvant type. Adding Renex-30 to 18 g/ha of rimsulfuron did increase control on an average from 16 to 51%. Postemergence efficacy was also independent of the annual bluegrass variety and growth media (field soil vs. a sand–peat mixture). Preemergence activity of rimsulfuron against germinating annual bluegrass seeds was slightly greater in the sand–peat mixture than in the soil and with var. annua than with var. reptans, and on uncovered seed compared with 0.5-cm-deep growth media covered seeds.

Keywords

Rimsulfuronannual bluegrass, Poa annua #3 POANNAdjuvant studyherbicide absorption by plantsherbicide placementsurfactant studyturfgrass weedsWATweeks after treatment
Type
Research
Information
Weed Technology , Volume 16 , Issue 3 , September 2002 , pp. 612 - 616
Copyright
Copyright © Weed Science Society of America 

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References

Literature Cited

Ahrens, W. H. ed. 1998. Herbicide Handbook. Supplement to 7th ed. Champaign, IL: Weed Science Society of America. pp. 60–62.Google Scholar
Beard, J. B., Rieke, P. E., Turgeon, A. J., and Vargar, J. M. Jr. 1978. Annual Bluegrass (Poa annua L.): Description, Adaption, Culture and Control. Michigan State University Experiment Station Research Rep. 352.Google Scholar
Cooper, R. J. and Skogley, C. R. 1981. An evaluation of several topdressing programs for Agrostis stolonifera L. and Agrostis canina L. putting green turf. In Sheard, R. W., ed. Proceedings of the 4th International Turfgrass Research Conference; Guelph, Ontario. pp. 129–136.Google Scholar
Couillard, A., Turgeon, A. J., and Rieke, P. E. 1997. New insights into thatch biodegradation. Proceedings of the 8th International Turfgrass Research Conference; Sydney, Australia. pp. 427–436.Google Scholar
Gibeault, V. A. 1971. Perenniality in Poa annua L. Ph.D. dissertation. Oregon State University, Corvalis, OR. 124 p.Google Scholar
Green, J. M. and Green, J. H. 1993. Surfactant structure and concentration strongly affect rimsulfuron activity. Weed Technol. 7: 633–640.Google Scholar
Kelly, S. T., Coats, G. E., and Luthe, D. S. 1999. Mode of resistance of triazine-resistant annual bluegrass. Weed Technol. 13: 747–752.Google Scholar
McElroy, J. S. 2000. Biology and Control of Eight Poa annua L. Ecotypes. . Agronomy and Soils Department, Auburn University, Auburn, AL. 72 p.Google Scholar
Tutin, T. G. 1957. A contribution to the experimental taxonomy of Poa annua L. Watsonia 4: 1–10.Google Scholar
Walker, R. H., Belcher, J. L., and Higgins, J. M. 1999. Rimsulfuron: potential for use in sports turf. Proc. South. Weed Sci. Soc. 52: 251.Google Scholar
[WSSA] Weed Science Society of America. 2001. International Survey of Herbicide Resistant Weeds: Web page: http://weedscience.org/in.asp. Accessed: April 2002.Google Scholar