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Plant Growth Regulators Alter the Growth of ‘Tifway’ Bermudagrass (Cynodon transvaalensis × C. dactylon) and Selected Turfgrass Weeds

Published online by Cambridge University Press:  12 June 2017

David B. Lowe  and
Ted Whitwell
David B. Lowe*
Affiliation:
Department of Horticulture, Clemson University, Clemson, SC 29634-0375
Ted Whitwell
Affiliation:
Department of Horticulture, Clemson University, Clemson, SC 29634-0375
*
Corresponding author's E-mail: dlowe@clemson.edu.
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Abstract

Growth-regulating characteristics of trinexapac-ethyl, paclobutrazol, and flurprimidol were investigated on ‘Tifway’ bermudagrass and four turfgrass weeds (large crabgrass, goosegrass, bahiagrass, and purple nutsedge). All treatments reduced the height of Tifway bermudagrass (25 to 37%) and large crabgrass (14 to 34%), but the height of purple nutsedge, goosegrass, and bahiagrass was not consistently changed. In 1995, all rates of trinexapac-ethyl reduced clipping weights of Tifway bermudagrass (70 to 87%) and bahiagrass (53 to 59%) more than large crabgrass, goosegrass, or purple nutsedge (< 39%). Trinexapac-ethyl (0.4 kg ai/ha) and paclobutrazol (1.1 kg ai/ha) applications increased both large crabgrass clipping weight and canopy visible density. Increased large crabgrass density was attributed to greater tiller numbers with trinexapac-ethyl (60 tillers/pot) and paclobutrazol (63 tillers/pot) compared to untreated large crabgrass plants (53 tillers/pot). Weed growth was not suppressed as much as Tifway bermudagrass growth; therefore, turfgrass stands may be adversely affected by plant growth regulator use under weedy conditions.

Keywords

Flurprimidol, α-(1-methylethyl)-α-[4-trifluoro-methoxy)phenyl]-5-primidinemethanolpaclobutrazol, (±)-(R*R*)β-[(4-chlorophenyl)-methyl]-α-(1,1-dimethylethyl)-1H-1,2,4-triazole-1-ethanoltrinexapac-ethyl, 4-(cyclopropyl-α-hydroxy-methylene)-3,5-dioxo-cyclohexanecarboxylic-acid ethyl esterbahiagrass, Paspalum notation Fluegge # PASNOgoosegrass, Eleusine indica L. Gaertn. # ELEINlarge crabgrass, Digitaria sanguinalis L. Scop. # DIGSApurple nutsedge, Cyperus rotundus L. # CYPROTifway bermudagrass, Cynodon transvaalensis Burtt-Davey × C. dactylon L. Pers. # CYNDAWeed growthcompetitionCYNDACYPRODIGSAELEINPASNOIPM, integrated pest managementPGR, plant growth regulatorWAT, weeks after treatment
Type
Research
Information
Weed Technology , Volume 13 , Issue 1 , March 1999 , pp. 132 - 138
Copyright
Copyright © 1999 by the Weed Science Society of America 

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Footnotes

1

Technical Contribution 4461 of the South Carolina Agricultural Experiment Station, Clemson University.

References

Literature Cited

Batten, S. M. 1983. Growth regulators—new tools for the '80s? USGA Green Sec. Rec. 21(3): 1–3.Google Scholar
Blalock, A. M., Whitwell, T., and Goss, G. 1996. Plant growth regulators as overseeding aids in hybrid bermudagrass fairways. Proc. South. Weed Sci. Soc. 49:64.Google Scholar
Brede, A. D. 1984. Plant growth regulators on bermudagrass turf. Proc. South. Weed Sci. Soc. 37:271.Google Scholar
Breuninger, J. 1993. Poa annua control in bentgrass greens. Golf Course Manag. 61:68–73.Google Scholar
Bruneau, A. H., Watkins, J. E., and Brandendurg, R. L. 1992. Integrated Pest Management. In Waddington, D. V., Carrow, R. N., and Shearman, R. C., eds. Turfgrass. Agron. Monogr. 32. Madison, WI: Am. Soc. Agron., Crop Sci. Soc. Am., and Soil Sci. Soc. Am. Publ. pp. 501–533.Google Scholar
Dernoeden, P. H. 1982. Effects of growth retardants applied three successive years to a Kentucky bluegrass turf. Proc. Northeast. Weed Sci. Soc. 36:336–343.Google Scholar
Dernoeden, P. H. 1984. Four-year response of a Kentucky bluegrass–red fescue turf to plant growth retardants. Agron. J. 76:807–813.Google Scholar
Duell, R. W., Schmit, R. M., and Cosky, S. W. 1980. Growth retardant effects on grasses for roadsides. In Beard, J. B., ed. Proc. 3rd International Turf Research Conf. Madison, WI: Am. Soc. Agron., Crop Sci. Soc. Am., and Soil Sci. Soc. Am. pp. 311–323.Google Scholar
Grossmann, K. 1992. Plant growth retardants: their mode of action and benefit for physiological research. In Karssen, C. M., van Loon, L. C., and Vreugdenhil, D. eds. Progress in Plant Growth Regulation. Dordrecht, Netherlands: Kluwer Academic. pp. 788–797.Google Scholar
Houseworth, D. and DiPaola, J. M. 1996. Primo: For Managing Turfgrass Growth. Greensboro, NC: Ciba-Geigy Corp. Tech. Bull. 18 pp.Google Scholar
Jagschitz, J. A. 1982. Evaluation of growth retardants in cool-season lawn turf. Proc. Northeast. Weed Sci. Soc. 36:334–339.Google Scholar
Johnson, B. J. 1992. Response of centipedegrass (Eremochloa ophiuroides) to plant growth regulators. Weed Technol. 6:113–118.Google Scholar
Johnson, B. J. 1993. Response of tall fescue to plant growth regulators and mowing frequencies. J. Environ. Hortic. 11:163–167.CrossRefGoogle Scholar
Johnson, B. J. 1994. Influence of plant growth regulators and mowing on two bermudagrasses. Agron. J. 86:805–810.Google Scholar
Johnson, B. J. and Murphy, T. R. 1996. Suppression of a perennial subspecies of annual bluegrass (Poa annua spp. reptans) in a creeping bentgrass (Agrostis stolonifera) green with plant growth regulators. Weed Technol. 10:705–709.Google Scholar
McCarty, L. B., DiPaola, J. M., Lewis, W. M., and Gilbert, W. B. 1985. Tall fescue response to plant growth retardants and fertilizer sources. Agron. J. 77:476–480.CrossRefGoogle Scholar
McCarty, L. B. and Weinbrecht, J. S. 1996. Trinexapac-ethyl (Primo) as an overseeding and transition establishment aid. Proc. South. Weed Sci. Soc. 49:72.Google Scholar
Salisbury, F. B. and Ross, C. W. 1992. Plant Physiology. Belmont, CA: Wads-worth Publ. pp. 329–331.Google Scholar
Sawyer, C. D., Wakefield, R. C., and Jagschitz, J. A. 1983. Evaluation of growth retardants for roadside turf. Proc. Northeast. Weed Sci. Soc. 37:372–375.Google Scholar
Watschke, T. L., Prinster, M. G., and Breuninger, J. M. 1992. Plant growth regulators and turfgrass management. In Waddington, D. V., Carrow, R. N., and Shearman, R. C., eds. Turfgrass. Agron. Monogr. 32. Madison, WI: Am. Soc. Agron., Crop Sci. Soc. Am., and Soil Sci. Soc. Am. Publ. pp. 557–588.Google Scholar