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Control of Volunteer Canola with Herbicides: Effects of Plant Growth Stage and Cold Acclimation

  • Anne Légère (a1), Marie-Josée Simard (a2), Eric Johnson (a3), F. Craig Stevenson (a4), Hugh Beckie (a1) and Robert E. Blackshaw (a5)...

Abstract

Phenoxy herbicides are frequently used to control volunteer canola populations. However, there have been claims that poor control could be due to cold acclimation of canola plants in the spring. The objective of this study was to determine whether cold acclimation or growth stage affected the response of canola volunteers to herbicides. In a growth room experiment, canola plants were prehardened and cold acclimated or were grown at 20/12 C and treated with one of six 2,4-D doses. Cold acclimation as achieved by this experiment affected upper and lower asymptotes of the dose–response curve but not the herbicide dose required to reduce canola weight by 50% relative to the nontreated control (GR50), indicating limited cold-related effects on canola tolerance to 2,4-D. Field experiments, conducted in the provinces of Québec and Saskatchewan, examined the effects of canola growth stage on the efficacy of 2,4-D, MCPA, and carfentrazone. Comparisons of the estimates from the dose–response curves confirmed that herbicide efficacy was consistently greater when canola plants were treated at an early growth stage, regardless of cultivar or herbicide used. The GR50 estimates for canola plants treated at a later growth stage exceeded the recommended rates. Some canola plants grown as volunteers in a wheat crop survived 2,4-D or MCPA treatments at 0.5× and 1× rates and produced up to 148 seeds/m2. Efficient control of canola volunteers will be obtained when plants are sprayed at an early growth stage, but near-total control will be highly desirable in order to restrict seedbank buildup, particularly when dealing with canola cultivars with different herbicide-resistant traits.

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Corresponding author's E-mail: legerea@agr.gc.ca

References

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Anonymous. 2001. Manitoba Agriculture, Food and Rural Initiatives. Weeds, Insects and Diseases. 2001. Web page: http://www.gov.mb.ca/agriculture/crops/weeds/fab53s00.html. Accessed: April 21, 2005.
Baker, E. A. 1974. The influence of environment on leaf wax development in Brassica oleracea var. gemmifera . New Phytol. 73:955966.
Beckie, H. J., Séguin-Swartz, G., Nair, H., Warwick, S. I., and Johnson, E. 2004. Multiple herbicide-resistant canola can be controlled by alternative herbicides. Weed Sci. 52:152157.
Beckie, H. J., Warwick, S. I., Nair, H., and Séguin-Swartz, G. 2003. Gene flow in commercial fields of herbicide-resistant canola (Brassica napus). Ecol. Appl. 13:12761294.
Claessen, D., Gilligan, A., Lutman, P. J. W., and van den Bosch, F. 2005. Which traits promote persistence of feral GM crops? Part 1: implications of environmental stochasticity. Oikos 110:2029.
[CPVQ] Conseil des Productions Végétales du Québec. 2000. Traitements herbicides. Grandes cultures. Québec: Conseil des Productions Végétales du Québec. 358 p.
[CRAAQ] Centre de Référence en Agriculture et Agroalimentaire du Québec. 2005. Résultats des Essais de Maïs-grain de Cultivars de Plantes Oléoprotéagineuses 2004 et Recommandations de Cultivars Céréales 2005. Web page: http://www.agrireseau.qc.ca/grandescultures/documents/Resultat-mais-2005.pdf. Accessed: October 20, 2005.
Devine, M. D. and Buth, J. L. 2001. Advantages of genetically modified canola: a Canadian perspective. in Proceedings of the Brighton Crop Protection conference—Weeds. Farnham, Surrey, U.K.: British Crop Protection Council. Pp. 356372.
Gauvrit, C. and Gaillardon, P. 1991. Effect of low temperature on 2,4-D behaviour in maize plants. Weed Res. 31:135142.
Gulden, R. H., Shirtliffe, S. J., and Thomas, A. G. 2003. Harvest losses of canola (Brassica napus) cause large seedbank inputs. Weed Sci. 51:8386.
Gulden, R. H., Thomas, A. G., and Shirtliffe, S. J. 2004. Relative contribution of genotype, seed size and environment to secondary seed dormancy potential expression in Canadian spring oilseed rape (Brassica napus). Weed Res. 44:110.
Hall, J. C. and Romano, M. L. 1995. Morphological and physiological differences between the auxinic herbicide-susceptible (S) and resistant (R) wild mustard (Sinapsis arvensis L.) biotypes. Pestic. Biochem. Physiol. 52:149155.
Hall, L., Topinka, K., Huffman, J., Davis, L., and Good, A. 2000. Pollen flow between herbicide-resistant Brassica napus is the cause of multiple-resistant B. napus volunteers. Weed Sci. 48:688694.
Johnson-Flanagan, A. M., Huiwen, Z., Thiagarajah, M. R., and Saini, H. S. 1991. Role of abscisic acid in the induction of freezing tolerance in Brassica napus suspension-cultured cells. Plant Physiol. 95:10441048.
Kacperska-Palacz, A. 1978. Mechanism of cold acclimation in herbaceous plants. in Li, P. H. and Sakai, A., eds. Plant Cold Hardiness and Freezing Stress. New York: Academic. Pp. 139152.
Laroche, A., Geng, X. M., and Singh, J. 1992. Differentiation of freezing tolerance and vernalization responses in Cruciferae exposed to a low temperature. Plant Cell Environ. 15:439445.
Leeson, J. Y., Thomas, A. G., Hall, L. M., Brenzil, C. A., Andrews, T., Brown, K. R., and Van Acker, R. C. 2005. Prairie weed surveys of cereal, oilseed and pulse crops from the 1970s to the 2000s. Saskatoon, SK: Agriculture and Agri-Food Canada, Saskatoon Research Centre. Weed Survey Series Publication 05-1CD.
Légère, A. 2005. Risks and consequences of gene flow from herbicide-resistant crops: canola (Brassica napus L.) as a case study. Pest Manag. Sci. 61:292300.
Légère, A., Simard, M-J., Thomas, A. G., Pageau, D., Lajeunesse, J., Warwick, S. I., and Derksen, D. A. 2001. Presence and persistence of volunteer canola in Canadian cropping systems. in Proceedings of the Brighton Crop Protection conference—Weeds. Farnham, Surrey, U.K.: British Crop Protection Council. Pp. 143148.
Levitt, J. 1980. Responses of plants to environmental stresses. Volume 1. Chilling, freezing, and high temperatures stresses. New York: Academic. Pp. 197199.
Lòpez-Granados, F. and Lutman, P. J. 1998. Effect of environmental conditions on the dormancy and germination of volunteer oilseed rape seed (Brassica napus). Weed Sci. 46:419423.
[OMAFRA] Ontario Ministry of Agriculture, Food and Rural Affairs. 2005. 2005 Variety Recommendations for Spring and Winter Canola. Web page: http://www.omafra.gov.on.ca/english/crops/facts/canperf05.htm. Accessed: October 21, 2005.
Orr, W., Keller, W. A., and Singh, J. 1986. Induction of freezing tolerance in an embryogenic cell suspension culture of Brassica napus by abscisic acid at room temperature. J. Plant Physiol. 126:2332.
Pekrun, C., Potter, T. C., and Lutman, P. J. W. 1997. Genotypic variation in the development of secondary dormancy in oilseed rape and its impact on the persistence of volunteer rape. in Proceedings of the Brighton Crop Protection conference—Weeds. Farnham, Surrey, U.K.: British Crop Protection Council. Pp. 243248.
Rapacz, M. 1998. The after-effects of temperature and irradiance during early growth of winter oilseed rape (Brassica napus L. var. oleifera, cv. Górczański) seedlings on the progress of their cold acclimation. Acta Physiol. Plant. 20:7378.
Rapacz, M. 1999. Frost resistance and cold acclimation abilities of spring-type oilseed rape. Plant Sci. 147:5564.
Rollin, F., Martin, J. L., and Rety, I. 1998. Gestion des repousses de cultures transgéniques résistantes au glyphosate par les herbicides de la rotation. 17e Conférence du COLUMA. Journées internationales sur la lutte contre les mauvaises herbes. Paris, France: Association Nationale pour La Protection des Plantes. 9 p.
[SAS] Statistical Analysis Systems. 1999. SAS OnlineDoc®. Version 8. Cary, NC: Statistical Analysis Systems Institute. 1176 p.
[SAS] Statistical Analysis Systems. 2000. JMP Statistics and Graphics Guide. Cary, NC: Statistical Analysis Systems Institute. 634 p.
Seefeldt, S. S., Jensen, J. E., and Fuerst, E. P. 1995. Log-logistic analysis of herbicide dose–response relationships. Weed Technol. 9:218227.
Simard, M-J. and Légère, A. 2004. Synchrony of flowering between canola (Brassica napus) and wild radish (Raphanus raphanistrum). Weed Sci. 52:905912.
Simard, M-J., Légère, A., Pageau, D., Lajeunesse, J., and Warwick, S. I. 2002. The frequency and persistence of volunteer canola (Brassica napus) in Québec cropping systems. Weed Technol. 16:433439.
Teutonico, R. A., Palta, J. P., and Osborn, T. C. 1993. In vitro freezing tolerance in relation to winter survival of rapeseed cultivars. Crop Sci. 33:103107.
Williams, M. M. II, Mortensen, D. A., Martin, A. R., and Marx, D. B. 2001. Within-field soil heterogeneity effects on herbicide-mediated crop injury and weed biomass. Weed Sci. 49:798805.
[WSSA] Weed Science Society of America. 2002. Herbicide Handbook. 8th ed. Lawrence, KS: Weed Science Society of America. 493 p.

Keywords

Control of Volunteer Canola with Herbicides: Effects of Plant Growth Stage and Cold Acclimation

  • Anne Légère (a1), Marie-Josée Simard (a2), Eric Johnson (a3), F. Craig Stevenson (a4), Hugh Beckie (a1) and Robert E. Blackshaw (a5)...

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