Hostname: page-component-797576ffbb-k7d4m Total loading time: 0 Render date: 2023-12-02T00:25:34.874Z Has data issue: false Feature Flags: { "corePageComponentGetUserInfoFromSharedSession": true, "coreDisableEcommerce": false, "useRatesEcommerce": true } hasContentIssue false

Ethametsulfuron Interactions with Grass Herbicides on Canola (Brassica napus, B. rapa)

Published online by Cambridge University Press:  12 June 2017

K. Neil Harker
Weed. Sci., Agric. Can. Res. Stn., Bag Service 5000, Lacombe, Alberta, Canada T0C 1S0
Robert E. Blackshaw
Weed Sci., Agric. Can. Res. Stn., Box 3000, Lethbridge, Alberta, Canada T1J 4B1
Ken J. Kirkland
Weed Sci., Agric. Can. Exp. Farm, Box 10, Scott, Saskatchewan, Canada S0K 4A0


Field experiments were conducted from 1986 to 1988 at Lacombe and Lethbridge, Alberta and Scott, Saskatchewan to determine growth and yield response of canola to mixtures of ethametsulfuron with specific grass herbicides. Ethametsulfuron did not usually cause canola injury when mixed with sethoxydim. However, ethametsulfuron mixtures with the following grass herbicides listed in decreasing order of injury potential, often caused canola injury and yield loss: haloxyfop > fluazifop > fluazifop-P > quizalofop > quizalofop-P. Canola yield losses were severe in some experiments, ranging from 59% with quizalofop mixtures to 97% with haloxyfop mixtures; in other experiments, the same mixtures did not cause significant yield losses. ‘Tobin,’ a Brassica rapa cultivar, tended to be more susceptible to injury than the B. napus cultivars ‘Pivot’ and ‘Westar.’ Canola injury symptoms were consistent with those expected from sulfonylurea herbicides. Therefore, we suggest that specific grass herbicides differentially impair the ability of canola to metabolize ethametsulfuron to inactive forms.

Copyright © 1995 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.)


Literature Cited

1. Beckie, H. J. and McKercher, R. B. 1989. Soil residual properties of DPX-A7881 under laboratory conditions. Weed Sci. 37:412418.Google Scholar
2. Beyer, E. M. Jr., Duffy, M. J., Hay, J. V., and Schlueter, D. D. 1988. Sulfonylureas. Chapter 3, p. 117189 in Kearney, P. C. and Kaufman, D. D., eds. Herbicides: Chemistry, Degradation, and Mode of Action. Marcel Dekker, Inc., New York. 403 p.Google Scholar
3. Blackshaw, R. E., Anderson, G. W., and Dekker, J. 1987. Interference of Sinapsis arvensis L. and Chenopodium album L. in spring canola (Brassica napus). Weed Res. 27:207213.Google Scholar
4. Blackshaw, R. E. 1989. Control of Cruciferae weeds in canola (Brassica napus) with DPXA7881. Weed Sci. 37:706711.Google Scholar
5. Blackshaw, R. E. 1989. Synergistic mixes of DPX-A7881 and clopyralid in canola (Brassica napus). Weed Technol. 3:690695.Google Scholar
6. Blackshaw, R. E. and Harker, K. N. 1992. Combined postemergence grass and broadleaf weed control in canola (Brassica napus). Weed Technol. 6:892897.Google Scholar
7. Gressel, J. 1990. Synergizing herbicides. Rev. Weed Sci. 5:4982.Google Scholar
8. Gronwald, J. W. 1991. Lipid biosynthesis inhibitors. Weed Sci. 39:435449.Google Scholar
9. Hutchison, J. M., Peter, C. J., Amuti, K. S., Hageman, L. H., and Roy, G. A. 1987. DPX-A7881: A new herbicide for oilseed rape. Proc. Br. Crop Prot. Conf.-Weeds 3:6367.Google Scholar
10. Parsons, I. M. 1987. Use of DPX-A7881 for weed control in spring oilseed rape in Canada. Proc. Br. Crop Prot. Conf.-Weeds 3:809814.Google Scholar
11. Shires, A., Bell, J. M., Keith, M. O., and McGregor, D. I. 1982. Rapeseed dockage. Effects of feeding raw and processed wild mustard and stinkweed on growth and feed utilization of mice. Can. J. Anim. Sci. 62:275285.Google Scholar
12. Swanton, C. J. and Chandler, K. 1989. Control of wild mustard in canola with POST herbicides. Can. J. Plant Sci. 69:889896.Google Scholar
13. Walker, K. A., Ridley, S. M., Lewis, T., and Harwood, J. L. 1989. Action of aryloxyphenoxy carboxylic acids on lipid metabolism. Rev. Weed Sci. 4:7184.Google Scholar