Hostname: page-component-586b7cd67f-dlnhk Total loading time: 0 Render date: 2024-11-26T15:08:08.744Z Has data issue: false hasContentIssue false

Thiazopyr Stimulates Hairy Beggarticks (Bidens pilosa) Germination

Published online by Cambridge University Press:  12 June 2017

Rakesh S. Chandran*
Affiliation:
Citrus Research and Education Center, University of Florida, Institute of Food and Agricultural Sciences, 700 Experiment Station Road, Lake Alfred, FL 33850-2299
Megh Singh
Affiliation:
Citrus Research and Education Center, University of Florida, Institute of Food and Agricultural Sciences, 700 Experiment Station Road, Lake Alfred, FL 33850-2299
Sydha Salihu
Affiliation:
Citrus Research and Education Center, University of Florida, Institute of Food and Agricultural Sciences, 700 Experiment Station Road, Lake Alfred, FL 33850-2299
*
Corresponding author's E-mail: [email protected].

Abstract

Observations in a citrus grove indicated that hairy beggarticks numbers were higher in plots receiving thiazopyr alone or thiazopyr with oxyfluorfen than in nontreated plots. At 120 days after treatment (DAT), approximately 90% more hairy beggarticks plants had emerged in plots receiving thiazopyr at 0.56 kg ai/ha than in nontreated plots. A tank mix of thiazopyr plus oxyfluorfen, each at 0.56 kg/ha, resulted in a 55% increase in hairy beggarticks number at 120 DAT. Greenhouse studies using seeds collected from sites with or without herbicide history produced similar results. Oxyfluorfen at 0.28 kg/ha stimulated seed germination but injured seedlings by 47% or more at 36 DAT when applied at higher rates. Thiazopyr applied at 0.56 kg/ha antagonized the preemergence activity of oxyfluorfen at 0.28 or 0.56 kg/ha. Thiazopyr at 1.12 kg/ha stimulated hairy beggarticks germination by 37% compared with nontreated containers.

Type
Research
Copyright
Copyright © 1999 by the Weed Science Society of America 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Footnotes

1

Publication R-06212 Florida Agricultural Experimental Station Journal Series.

Current address of corresponding author: Extension Specialist-IPM and Research Assistant Professor, 1076 Agricultural Sciences Building, West Virginia University, Morgantown, WV 26506-6108.

References

Literature Cited

Anonymous. 1998. Mandate 2E specimen label. Philadelphia, PA: Rohm and Haas Co.Google Scholar
Ahrens, W. H. 1994. Thiazopyr. Herbicide Handbook. 7th ed. Champaign, IL: Weed Science Society of America. pp. 280281.Google Scholar
Cudney, D. W., Orloff, W. B., and Demoson, D. A. 1993. Effects of thiazopyr and trifluralin on dodder (Cuscuta indecora) in alfalfa (Medicago sativa). Weed Technol. 7:860864.Google Scholar
Fawcett, R. S. 1974. The Effect of Various Carbamate Herbicides on Germination of Several Weed Species. Diss. Abstr. Int. B. 35:1718.Google Scholar
Fawcett, R. S., and Slife, F. W. 1975. Germination stimulation properties of carbamate herbicides. Weed Sci. 23:419424.Google Scholar
Frans, R., Talbert, R., and Marx, D. 1986. Experimental design and techniques for measuring and analyzing plant responses to weed control practices. In Camper, N. D., ed. Research Methods in Weed Science. Champaign. IL: Southern Weed Science Society. pp. 2946.Google Scholar
Futch, S. H. 1997. Horticultural and Environmental Aspects of Weed Control in Florida Citrus. Ph.D. dissertation. University of Florida, Gainesville. FL. 142 p.Google Scholar
Holm, L. G., Plucknett, D. L., Pancho, J. V., and Herberger, J. P. 1977. The World's Worst Weeds—Distribution and Biology. Honolulu: University Press of Hawaii. pp. 185190.Google Scholar
Hurtt, W. 1982. Nonionic surfactant effects on weed seed germination. Proc. Northeast. Weed Sci. Soc. 36:102.Google Scholar
Kapusta, G., Krausz, R. F., and Matthews, J. L. 1993. MON 13200 early preplant controls giant foxtail (Setaria fuberi) season long in No-Till Soybean (Glycine max). Weed Technol. 7:872878.CrossRefGoogle Scholar
Kozlowski, T. T., and Torrie, J. H. 1965. Effect of soil incorporation of herbicides on seed germination and growth of pine seedlings. Soil Sci. 100:139146.CrossRefGoogle Scholar
Mersie, W., and Singh, M. 1989. Benefits and problems of chemical weed control in citrus. Rev. Weed Sci. 4:5970.Google Scholar
Mitich, L. W. 1994. Beggarticks. Weed Technol. 8:172175.Google Scholar
Nishimoto, R. K. 1993. Oxyfluorfen tolerance and weed control in young papaya. Int. J. Pest Manag. 39:366369.Google Scholar
Reddy, K. R., and Singh, M. 1992. Germination and emergence of hairy beggarticks (Bidens pilosa). Weed Sci. 40:195199.CrossRefGoogle Scholar
Shankland, D. L. 1985. Environmental toxicants and public risks in Florida. Proc. Soil Crop Sci. Soc Fla. 44:14.Google Scholar
Singh, M., and Tucker, D.P.H. 1997. Weeds. In Knapp, J. L. ed. 1997 Florida Citrus Pest Management Guide. Gainesville, FL: Florida Cooperative Extension Service, University of Florida. pp. 5262.Google Scholar
Singh, S., and Malik, R. K. 1994. Evaluation of MON-13200 for broad spectrum weed control in cotton. Tests Agrochem. Cultiv. 124:4445.Google Scholar