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Synergistic Mixes of DPX-A7881 and Clopyralid in Canola (Brassica napus)

Published online by Cambridge University Press:  12 June 2017

Robert E. Blackshaw
Robert E. Blackshaw*
Affiliation:
Agric. Canada Res. Stn., Lethbridge, AB, Canada T1J 4B1
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Abstract

The interaction of DPX-A7881 and clopyralid applied as tank mixtures was studied under controlled environment and field conditions on several commonly occurring weeds in canola. Control of wild mustard and wild buckwheat was not affected by mixing these herbicides. DPX-A7881 controlled wild mustard, and clopyralid controlled wild buckwheat independently of the other herbicide. However, redroot pigweed and common lambsquarters were controlled better with DPX-A7881 plus clopyralid than with either herbicide alone. The herbicides interacted in an additive to synergistic manner on redroot pigweed depending on the rate of each herbicide. DPX-A7881 and clopyralid interacted synergistically at all rates on common lambsquarters. Plant height, date of flowering, seed yield, and quality data all indicated that canola completely tolerated DPX-A7881 and clopyralid applied alone or in combination.

Keywords

clopyralid, 3,6-dichloro-2-pyridinecarboxylic acidDPX-A7881, methyl 2-[(4-ethoxy-6-methylamino-1,3,5-triazin-2-yl)-carbamoylsulphanoyl]benzoatecanola, Brassica napus L. ‘Pivot’common lambsquarters, Chenopodium album L. ♯3 CHEALredroot pigweed, Amaranthus retroflexus L. AMAREwild buckwheat, Polygonum convolvulus L. ♯ POLCOwild mustard, Brassica kaber (DC.) L. C. Wheeler ♯ SINARHerbicide interactioncrop toleranceoil contentoilseed raperapeseedseed sizeseed yield
Type
Research
Information
Weed Technology , Volume 3 , Issue 4 , December 1989 , pp. 690 - 695
Copyright
Copyright © 1989 by the Weed Science Society of America 

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References

Literature Cited

1. Agbakoba, C.S.O., and Goodin, J. F. 1970. Picloram enhances 2,4-D movement in field bindweed. Weed Sci. 18:19–21.CrossRefGoogle Scholar
2. Alberta Agriculture. 1988. Guide to crop protection in Alberta. Agdex 606-1, Edmonton, Alberta T6H 5T6.Google Scholar
3. Bovey, R. W., Davis, F. S., and Morton, H. L. 1968. Herbicide combinations for woody plant control Weed Sci. 16:332–335.CrossRefGoogle Scholar
4. Blackshaw, R. E. 1989. Control of Cruciferae weeds in canola (Brassica napus) with DPX-A7881. Weed Sci. 37: (in press).CrossRefGoogle Scholar
5. Blackshaw, R. E., Anderson, G. W., and Dekker, J. 1987. Interference of Sinapis arvensis L. and Chenopodium album L. in spring canola (Brassica napus L.). Weed Res. 27:207–213.CrossRefGoogle Scholar
6. Chow, P.N.P. 1981. Control of weeds with dichloropicolinic acid (Lontrel 360) with four wild oat herbicides in rapeseed. Res. Rep. Expert Comm. Weeds (West. Sect.), p. 188.Google Scholar
7. Colby, S. R. 1967. Calculating synergistic and antagonistic responses of herbicide combinations. Weeds 15:20–22.CrossRefGoogle Scholar
8. Dew, D. A., and Keys, C. H. 1976. An index of competition for estimating loss of rape due to wild oats. Can. J. Plant Sci. 56:1005–1006.CrossRefGoogle Scholar
9. Flint, J. L., Cornelius, P. L., and Barrett, M. 1988. Analyzing herbicide interactions: a statistical treatment of Colby's method. Weed Technol. 2:304–309.CrossRefGoogle Scholar
10. Hamill, A. S., Smith, L. W., and Switzer, C. M. 1972. Influence of phenoxy herbicides on picloram uptake and phytotoxicity. Weed Sci. 20:226–229.CrossRefGoogle Scholar
11. 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 1:63–67.Google Scholar
12. Krawiec, S., and Morre, D. J. 1968. Interactions of Tordon herbicide applied in combinations. Down Earth 24:7–10.Google Scholar
13. Morrison, I. N., and Mayert, T.S.H. 1981. Lontrel and other herbicides for broadleaf weed control in flax. Res. Rep. Expert Comm. Weeds (West. Sect.), p. 163–164.Google Scholar
14. O'Sullivan, P. A. and Kossatz, V. C. 1982. Selective control of Canada thistle in rapeseed with 3,6-dichloropicolinic acid. Can. J. Plant Sci. 62:989–993.CrossRefGoogle Scholar
15. O'Sullivan, P. A., Kossatz, V. C., and Weiss, G. M. 1985. Influence of clopyralid on several yield and quality characteristics of Altex, Candle and Regent rapeseed. Can. J. Plant Sci. 65:633–639.CrossRefGoogle Scholar
16. Parsons, I. M. 1987. Use of DPX-A7881 for weed control in spring oilseed rape in Canada. Proc. Br. Crop Prot. Conf. – Weeds 3:809–814.Google Scholar
17. Rose, S. P., and Bell, J. M. 1982. Reproduction of mice fed low erucic acid rapeseed oil contaminated with weed seed oils. Can. J. Anim. Sci. 62:617–624.CrossRefGoogle Scholar
18. Shires, A., Bell, J. M., Keith, M. O., and McGregor, D. I. 1982. Rapeseed dockage. Effects of feeding raw and processed wild mustard and stink-weed on growth and feed utilization of mice. Can. J. Anim. Sci. 62:275–285.CrossRefGoogle Scholar
19. Stone, J. R., Parsons, I. M., and Prins, D. J. 1985. DPX-A7881: A new herbicide for use in oilseed rape. Proc. North Cent. Weed Control Conf. 40:17.Google Scholar
20. Swanton, C. J., and Chandler, K. 1989. Control of wild mustard (Sinapis arvensis L.) in canola (Brassica napus L.) with postemergence herbicides. Can. J. Plant Sci. (in press).Google Scholar
21. Thomas, P. 1984. Canola growers manual. Canola Council of Canada, Winnipeg, Manitoba R3B 1B3.Google Scholar