Control of glyphosate resistant giant ragweed in soybean with preplant herbicides

Joanna Follings, Nader Soltani, Darren E. Robinson, François J. Tardif, Mark B. Lawton, Peter H. Sikkema

Monsanto Canada Inc., Guelph, Canada.
University of Guelph Ridgetown Campus, Ridgetown, Canada.
University of Guelph, Guelph, Canada.

DOI: 10.4236/as.2013.44028                

Abstract

Giant ragweed was the first glyphosate resistant weed identified in Canada. It is a very competetive weed in row crop production and has been found to drastically reduce yields of soybean; therefore, control of this competitive weed is essential. The objective of this study was to determine effective control options for glyphosate resistant giant ragweed in soybean with herbicides applied preplant. Eighteen herbicide combinations were evaluated in field studies conducted in 2011 and 2012 at five locations with confirmed glyphosate resistant giant ragweed. Glyphosate plus 2,4-D ester or amitrole provided the best control of glyphosate resistant giant ragweed 4 WAA. Glyphosate plus 2,4-D ester provided 98 to 99% control and was equivalent to the weed free check at all locations. Glyphosate plus amitrole provided 90% to 93% control and was equivalent to the weed free check at 4 of 5 locations. Herbicides providing residual activity provided variable control across all locations. Of the herbicides with residual activity evaluated, glyphosate plus linuron provided the best control of glyphosate resistant giant ragweed; however, control was inconsistent across locations and years. Glyphosate plus linuron provided 23% to 99% controland was equal to the weed free check at one location 8 WAA.

Keywords

Chlorimuron-Ethyl; Cloransulam-Methyl; Flumioxazin; Herbicide-Resistant Weeds; Imazethapyr; Linuron; Metribuzin; Saflufenacil/Dimethenamid-P; Soybean

Conflicts of Interest

The authors declare no conflicts of interest.

References

[1]	Amrhein, N., Schab, J. and Steinrücken, H.C. (1980) The mode of action of the herbicide glyphosate. Naturwissenschaften, 67, 356-357. doi:10.1007/BF01106593
[2]	Franz, J.E., Mao, M.K. and Sikorski, J.A. (1997) Glyphosate: A unique global herbicide. American Chemical Society, Washington DC.
[3]	Sprankle, P., Meggitt, W.F. and Penner, D. (1975) Rapid inactivation of glyphosate in the soil. Weed Science, 23, 224-228.
[4]	Dill, G.M., Sammons, R.D., Feng, P.C.C., Kohn, F., Kretzmer, K., Mehrsheikh, A., Bleeke, M., Honegger, J.L., Farmer, D., Wright, D. and Haupfear, E.A. (2010) Glyphosate: Discovery, development, applications, and properties. In: Nandula, V.K., Ed., Glyphosate Resistance in Crops and Weeds: History, Development, and Management, John Wiley and Sons, Inc., Hoboken, 1-33. doi:10.1002/9780470634394.ch1
[5]	Dill, G.M., CaJacob, C.A. and Padgette, S.R. (2008) Glyphosate resistant crops: Adoption, use and future considerations. Pest Management Science, 64, 326-331. doi:10.1002/ps.1501
[6]	Owen, M.D.K. (2008) Weed species shifts in glyphosate resistant crops. Pest Management Science, 64, 377-387. doi:10.1002/ps.1539
[7]	Bradshaw, L., Padgette, D.S.R., Kimball, S.L. and Wells, B.H. (1997) Perspectives on glyphosate resistance. Weed Technology, 11, 189-198.
[8]	Powles, S.B., Lorraine-Colwill, D.F., Dellow, J.J. and Preston, C. (1998) Evolved resistance to glyphosate in rigid ryegrass (Loliumrigidum) in Australia. Weed Science, 46, 604-607.
[9]	Heap, I. (2012) International survey of herbicide resistant weeds. http://www.weedscience.org/In.asp
[10]	Bassett, I.J. and Crompton, C.W. (1982) The biology of Canadian weeds.: 55.: Ambrosia trifida L. Canadian Journal of Plant Science, 62, 1003-1010. doi:10.4141/cjps82-148
[11]	Harrison, S.K., Regnier, E.E., Schmoll, J.T. and Webb, J.E. (2001) Competition and fecundity of giant ragweed in corn. Weed Science, 49, 224-229. doi:10.1614/0043-1745(2001)049[0224:CAFOGR]2.0.CO;2
[12]	Schutte, B.J., Regnier, E.E. and Harrison, S.K. (2008) The association between seed size and seed longevity among maternal families in Ambrosia trifida L. populations. Seed Science Research, 18, 201-211. doi:10.1017/S0960258508082974
[13]	Johnson, B., Loux, M., Nordby, D., Sprague, C., Nice, G., Westhoven, A. and Stachler, J. (2007) Biology and management of giant ragweed. http://www.ces.purdue.edu/extmedia/BP/GWC-12.pdf
[14]	Baysinger, J.A. and Sims, B.D. (1992) Giant ragweed (Ambrosia trifida) control in soybean (Glycine max). Weed Technology, 6, 13-18.
[15]	Vink, J.P., Soltani, N., Robinson, D.E., Tardif, F.J., Lawton, M.B. and Sikkema, P.H. (2012) Glyphosate-resistant giant ragweed (Ambrosia trifida L.) control with preplant herbicides in soybean (Glycine max L.). Canadian Journal of Plant Science, 92, 913-922. doi:10.4141/cjps2012-025
[16]	Soltani, N., Shropshire, C. and Sikkema, P.H. (2011) Giant ragweed (Ambrosia trifida L.) control in corn. Canadian Journal of Plant Science, 91, 577-581. doi:10.4141/cjps2010-004
[17]	Stachler, J.M. (2008) Characterization and management of glyphosate-resistant giant ragweed (Ambrosia trifida L.) and horseweed [Conyzacanadensis (L.) Cronq.]. Ph.D. Dissertation, The Ohio State University, Columbus, 60-107.