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Seed Head Suppression of Knotroot Foxtail (Setaria parviflora) in Bahiagrass (Paspalum notatum) Grown for Seed

Published online by Cambridge University Press:  20 January 2017

Glenn Wehtje ,
James P. Bostick  and
Robert A. Dawkins
Glenn Wehtje*
Affiliation:
Department of Agronomy and Soils, Auburn University, Auburn AL 36849
James P. Bostick
Affiliation:
Department of Agronomy and Soils, Auburn University, Auburn AL 36849
Robert A. Dawkins
Affiliation:
Department of Agronomy and Soils, Auburn University, Auburn AL 36849
*
Corresponding author's E-mail: [email protected]
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Abstract

Bahiagrass grown for foundation seed had become infested primarily with knotroot foxtail, and secondarily with yellow foxtail. Seed from both foxtail species are mechanically inseparable to certified seed standards from bahiagrass seed. Studies were conducted to determine if pendimethalin applied PRE, in combination with multiple POST applications of diclofop would sufficiently control and/or suppress foxtail seed head production so as to prevent contamination of the harvested bahiagrass seed. Neither pendimethalin nor multiple applications of diclofop were detrimental to bahiagrass seed head production. Although pendimethalin had no effect of knotroot foxtail seed head production, diclofop was effective. Depending on the year, between one and three POST applications of diclofop at 1.12 kg/ha each were effective in reducing, but not completely eliminating, knotroot foxtail seed head production in bahiagrass.

Keywords

diclofop, pendimethalin, knotroot foxtail, Setaria parviflora (Poir.) Kerguelen SETGE, yellow foxtail, Setaria glauca (L.) Beauv. SETLU, bahiagrass, Paspalum notatum Flugge PASNOForage grassesseed contaminationseed production
Type
Weed Management — Other Crops/Areas
Information
Weed Technology , Volume 22 , Issue 2 , June 2008 , pp. 249 - 252
Copyright
Copyright © Weed Science Society of America 

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References

Literature Cited

Arregui, M. C., Sánchez, D., and Scotta, R. 2001. Weed control in established alfalfa (Medicago sativa) with postemergence herbicides. Weed Technol. 15:424–428.CrossRefGoogle Scholar
Chow, P. N. P. 1978. Selectivity and site of action in relation to field performance of diclofop. Weed Sci. 26:352–358.CrossRefGoogle Scholar
Hacskaylo, J. and Amato, V. A. 1968. Effect of trifluralin on roots of corn and cotton. Weed Sci. 16:513–515.CrossRefGoogle Scholar
Jacques, G. L. and Harvey, R. G. 1979. Adsorption and diffusion of dinitroaniline herbicides in soils. Weed Sci. 27:450–455.CrossRefGoogle Scholar
Jordan, T. N., Baker, R. S., and Barrentine, W. L. 1978. Comparative toxicity of several dinitroaniline herbicides. Weed Sci. 26:72–75.CrossRefGoogle Scholar
Khodayari, K., Frans, R. E., and Collins, F. C. 1983. Diclofop—a selective herbicide for Italian ryegrass (Lolium multiflorum) control in winter wheat (Triticum aestivum). Weed Sci. 31:436–438.CrossRefGoogle Scholar
McCarty, L. B., Miller, L. C., and Colvin, D. L. 1991. Bermudagrass (Cynodon sp.) cultivar response to diclofop, MSMA and metribuzin. Weed Technol. 5:27–32.CrossRefGoogle Scholar
McWhorter, C. G. 1972. Factors affecting johnsongrass rhizome production and germination. Weed Sci. 20:41–45.CrossRefGoogle Scholar
McWhorter, C. G. 1974. Johnsongrass control in soybeans with trifluralin and nitralin. Weed Sci. 22:111–115.CrossRefGoogle Scholar
McWhorter, C. G. 1977. Johnsongrass control in soybeans with soil incorporated dinitroaniline herbicides. Weed Sci. 25:264–267.CrossRefGoogle Scholar
Miller, D. A. 1984. Forage Crops. New York, NY McGraw-Hill. 477–478.Google Scholar
Miller, J. H. and Miller, K. V. 2007. Forest Plants of the Southeast. Auburn, AL Southern Weed Science Society and Craftmaster Printers. 454.Google Scholar
Morrison, I. N. and Maurice, D. C. 1984. The relative response of two foxtail (Setaria) species to diclofop. Weed Sci. 32:686–690.CrossRefGoogle Scholar
Oliver, L. R. and Frans, R. E. 1968. Inhibition of cotton and soybean roots from incorporated trifluralin and persistence in soil. Weed Sci. 16:199–203.CrossRefGoogle Scholar
SAS 2001. SAS User's Guide. Release 8.2 Cary. NC SAS Institute.Google Scholar
Senseman, S. A., editor. 2007. Herbicide Handbook. 9th ed. Lawrence, KS Weed Science Society of America. 27–29.Google Scholar
Todd, B. G. and Stobbe, E. H. 1977. Selectivity of diclofop methyl among wheat, barley, wild oat (Avena fatua) and green foxtail (Setaria viridis). Weed Sci. 25:382–385.CrossRefGoogle Scholar
Ward, C. Y. and Watson, V. H. 1984. Bahiagrass, carpetgrass, and dallisgrass. Pages 255–262. in Heath, M. E., Barnes, R. F., and Metcalfe, D. S., editors. Forages: The Science of Grassland Agriculture. Ames, IA Iowa State University Press.Google Scholar
Wu, C. and Santelmann, P. W. 1976. Phytotoxicity and soil activity of HOE 23408. Weed Sci. 24:601–604.CrossRefGoogle Scholar