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Influence of Spring Tillage and Glyphosate Treatment on Dandelion (Taraxacum officinale) Control in Glyphosate-Resistant Canola

Published online by Cambridge University Press:  20 January 2017

Nathan T. Froese ,
Rene C. Van Acker  and
Lyle F. Friesen
Nathan T. Froese
Affiliation:
Department of Plant Science, University of Manitoba, Winnipeg, MB, Canada R3T 2N2
Rene C. Van Acker
Affiliation:
Department of Plant Science, University of Manitoba, Winnipeg, MB, Canada R3T 2N2
Lyle F. Friesen*
Affiliation:
Department of Plant Science, University of Manitoba, Winnipeg, MB, Canada R3T 2N2
*
Corresponding author's E-mail: [email protected]
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Abstract

Although dandelion has been recognized for some time as a common weed of perennial plant stands, recent weed surveys in western Canada indicate that dandelion has become more common in fields where annual spring crops are grown. Because little has been published on dandelion control in annual crops, a field study was conducted at two locations in southern Manitoba in 1999 and 2000 investigating the effect of spring tillage, glyphosate dosage, and application timing on dandelion control in a spring annual glyphosate-resistant canola crop. The experiments were situated in areas known to have natural infestations of dandelion. Final assessments of dandelion control were performed the spring following treatment, i.e., the next year, to provide a better indication of treatment efficacy on this perennial weed. Spring tillage alone did not significantly reduce dandelion density, as assessed the following spring, but did reduce dandelion shoot dry matter at three of the five site-years by up to 84%. Glyphosate was applied preplant, in-crop, and postharvest at dosages ranging from 450 g ae/ha in-crop to 2,700 g ae/ha postharvest. Glyphosate application after the canola crop had been harvested provided the greatest level of dandelion control, with a single postharvest application of 900 g ae/ha of glyphosate reducing dandelion density and shoot dry matter by 88 and 96%, respectively, the following spring. Applications of glyphosate either preplant or in-crop were not nearly as effective as the postharvest treatments in reducing dandelion density and shoot dry matter the following spring.

Keywords

Glyphosatedandelion, Taraxacum officinale Weber ex Wiggers # TAROFcanola, Brassica napus L. ‘LG 3235’Dandelion controlglyphosate application timing
Type
Research Article
Information
Weed Technology , Volume 19 , Issue 2 , June 2005 , pp. 283 - 292
Copyright
Copyright © Weed Science Society of America 

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Footnotes

Current address: BASF Canada, Unit 100-101, Route 100, Morden, MB, Canada R6M 1Y5.

References

Literature Cited

Canola Council of Canada. 2003. Canola Growers Manual—Seeding Rates: Web page: http://www.canola-council.org. Accessed: September 22, 2003.Google Scholar
Froese, N. T. 2001. Dandelion's (Taraxacum officinale) Distribution, Interference, and Control in Roundup Ready™ Canola. M.Sc. dissertation. The University of Manitoba, Winnipeg, MB, Canada. 136 p.Google Scholar
Froese, N. T. and Van Acker, R. C. 2003. Distribution and interference of dandelion (Taraxacum officinale) in spring canola. Weed Sci. 51:435–442.Google Scholar
Gomez, K. A. and Gomez, A. A. 1984. Statistical Procedures for Agricultural Research. 2nd ed. New York: J. Wiley. Pp. 187–207.Google Scholar
Goudy, H. J., Bennett, K. A., Brown, R. B., and Tardif, F. J. 2001. Evaluation of site-specific weed management using a direct-injection sprayer. Weed Sci. 49:359–366.CrossRefGoogle Scholar
Leeson, J. Y., Thomas, A. G., Andrews, T., Brown, K. R., and Van Acker, R. C. 2002. Manitoba Weed Survey of Cereal and Oilseed Crops in 2002. Weed Survey Series Publ. 02-2. Saskatoon, SK, Canada: Agriculture and Agri-Food Canada. 191 p.Google Scholar
Légère, A. and Samson, N. 1999. Relative influence of crop rotation, tillage, and weed management on weed associations in spring barley cropping systems. Weed Sci. 47:112–122.Google Scholar
Manitoba Agriculture and Food. 2003. Guide to Crop Protection 2003. Carman, MB, Canada: Manitoba Agriculture and Food. Pp. 120–129.Google Scholar
Mann, H. 1981. Common dandelion (Taraxacum officinale) control with 2,4-D and mechanical treatments. Weed Sci. 29:704–708.Google Scholar
Morse, P. M. and Thompson, B. K. 1981. Presentation of experimental results. Can. J. Plant Sci. 61:799–802.Google Scholar
Moyer, J. R., Hironaka, R., Kozub, G. C., and Bergen, P. 1990. Effect of herbicide treatments on dandelion, alfalfa and sainfoin yields and quality. Can. J. Plant Sci. 70:1105–1113.Google Scholar
Ominski, P. D., Entz, M. H., and Kenkel, N. 1999. Weed suppression by Medicago sativa in subsequent cereal crops: a comparative survey. Weed Sci. 47:282–290.Google Scholar
Richardson, J. 1985. In praise of the archenemy. Audubon 87 (4):36–39.Google Scholar
Statistics Canada. 2002. Census of Agriculture 2001. Table 7—Tillage practices used to prepare land for seeding, by province, Census Agricultural Region (CAR) and Census Division (CD). Available on computer CD-ROM from Statistical Reference Centre, Statistics Canada, Ottawa, ON, Canada.Google Scholar
Stewart-Wade, S. M., Neumann, S., Collins, L. L., and Boland, G. J. 2002. The biology of Canadian weeds. 117. Taraxacum officinale G. H. Weber ex Wiggers. Can. J. Plant Sci. 82:825–853.Google Scholar
Thomas, A. G., Frick, B. L., Van Acker, R. C., Knezevic, S. Z., and Joosse, D. 1998. Manitoba Weed Survey of Cereal and Oilseed Crops in 1997. Weed Survey Series Publ. 98-1. Saskatoon, SK, Canada: Agriculture and Agri-Food Canada. 192 p.Google Scholar
Tworkoski, T. 1992. Developmental and environmental effects on assimilate partitioning in Canada thistle (Cirsium arvense). Weed Sci. 40:79–85.Google Scholar
Wilson, R. G. and Michiels, A. 2003. Fall herbicide treatments affect carbohydrate content in roots of Canada thistle (Cirsium arvense) and dandelion (Taraxacum officinale). Weed Sci. 51:299–304.Google Scholar