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Using Soil-Applied Herbicides in Glyphosate-Resistant Soybeans along the Texas Gulf Coast

Published online by Cambridge University Press:  20 January 2017

W. James Grichar
W. James Grichar*
Affiliation:
Texas Agricultural Experiment Station, Beeville, TX 78102
*
Author's E-mail: w-grichar@tamu.edu
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Abstract

Field studies were conducted at four locations over a 2-year period to evaluate the utility of soil-applied herbicides and glyphosate timing for weed control and soybean yield. Pendimethalin, S-metolachlor plus metribuzin, and flufenacet plus metribuzin were applied pre-emergence (PRE) alone or followed by glyphosate applied early postemergence (EPOST), late postemergence (LPOST), or EPOST plus LPOST. Soil-applied herbicides or glyphosate alone failed to control (<45%) broadleaf signalgrass in 2003 due to late-season rainfall, which accounted for a late flush of growth. In 2004, soil-applied herbicides alone controlled 79–100% broadleaf signalgrass, whereas glyphosate alone or in combination with soil-applied herbicides controlled at least 99%. Barnyardgrass and tall waterhemp were controlled at least 87% with soil-applied herbicides alone and at least 95% when glyphosate was used alone or in combination with a soil-applied herbicide. Soybean yield varied, but at only one location did herbicide treatments produce higher yields than the untreated check. Under low to moderate weed pressure, the use of a soil-applied herbicide followed by glyphosate failed to increase net returns over soil-applied herbicides alone.

Keywords

Flufenacet + metribuzinglyphosateS-metolachlor + metribuzinpendimethalinbroadleaf signalgrassBrachiaria platyphylla (Griseb.) Nash #3 BRAPPbarnyardgrassEchinochloa crus-galli (L.) Beauv. # ECHCGtall waterhemp, Amaranthus tuberculatus (Moq.) J. D. Sauer # AMATUsoybean, Glycine max (L.) Merr. ‘HBK 5123RR, DP 5110RR’Application windowsequentialEPOST, early postemergencefb, followed byLPOST, late postemergencePOST, postemergencePRE, preemergence
Type
Research Article
Information
Weed Technology , Volume 20 , Issue 3 , September 2006 , pp. 633 - 639
Copyright
Copyright © Weed Science Society of America 

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References

Literature Cited

Barnes, J. W. and Oliver, L. R. 2004. Preemergence weed control in soybean with cloransulam. Weed Technol. 18:1077–1090.Google Scholar
Burnside, O. C. 1992. Rationale for developing herbicide-resistant crops. Weed Technol. 6:621–625.Google Scholar
Corrigan, K. A. and Harvey, R. G. 2000. Glyphosate with and without residual herbicides in no-till glyphosate-resistant soybean (Glycine max). Weed Technol. 14:569–577.Google Scholar
Culpepper, A. S. and York, A. C. 1998. Weed management in glyphosate-tolerant cotton. J. Cotton Sci. 4:174–185.Google Scholar
Dalley, C. D., Kells, J. J., and Renner, K. A. 2004. Effect of glyphosate application timing and row spacing on corn (Zea mays) and soybean (Glycine max) yields. Weed Technol. 18:165–176.Google Scholar
Delannay, X., Bauman, T. T., and Beighley, D. H. 1995. Yield evaluation of a glyphosate-tolerant soybean line after treatment with glyphosate. Crop Sci. 35:1461–1467.CrossRefGoogle Scholar
Ellis, J. M. and Griffin, J. L. 2002. Benefits of soil-applied herbicides in glyphosate-resistant soybean (Glycine max). Weed Technol. 16:514–547.Google Scholar
Flint, S. G., Shaw, D. R., Kelley, F. S., and Holloway, J. C. 2005. Effect of herbicide systems on weed shifts in soybean and cotton. Weed Technol. 19:266–273.Google Scholar
Heap, I. M. 2004. The International Survey of Herbicide Resistant Weeds: Web page:http://www.weedscience.org. Accessed: January 2, 2006.Google Scholar
Holloway, J. C. Jr. and Shaw, D. R. 1995. Influence of soil-applied herbicides on ivyleaf morningglory (Ipomoea hederacea) growth and development in soybean (Glycine max). Weed Sci. 43:655–659.Google Scholar
Holloway, J. C. Jr. and Shaw, D. R. 1996. Effect of herbicides on ivyleaf morningglory (Ipomoea hederacea) interference in soybean (Glycine max). Weed Sci. 44:860–864.CrossRefGoogle Scholar
Jordan, D. L., York, A. C., Griffin, J. L., Clay, P. A., Vidrine, P. R., and Reynolds, D. B. 1997. Influence of application variables on efficacy of glyphosate. Weed Technol. 11:354–362.Google Scholar
Knake, E. L. and Slife, F. W. 1969. Effect of time of giant foxtail removal from corn and soybeans. Weed Sci. 17:281–283.Google Scholar
Krausz, R. F., Kapusta, G., and Matthews, J. L. 1996. Control of annual weeds with glyphosate. Weed Technol. 10:957–962.Google Scholar
McWhorter, C. G. and Sciumbato, G. L. 1988. Effects of row spacing, benomyl, and duration of sicklepod (Cassia obtusifolia) interference on soybean (Glycine max) yields. Weed Sci. 36:254–259.Google Scholar
Mosier, D. G. and Oliver, L. R. 1995. Common cocklebur (Xanthium strumarium) and entireleaf morningglory (Ipomoea hederacea var. integriuscula) interference on soybeans (Glycine max). Weed Technol. 43:239–246.Google Scholar
Padgette, S. R., Kolacz, K. H., and Delannay, X. 1995. Development, identification, and characterization of a glyphosate-tolerant soybean line. Crop Sci. 35:1451–1461.Google Scholar
Shaw, D. R., Wixson, M. B., and Smith, C. A. 1991. Effect of imazaquin and chlorimuron plus metribuzin on sicklepod (Cassia obtusifolia) interference in soybean (Glycine max). Weed Technol. 5:206–210.Google Scholar
Trainer, G. D., Loux, M. M., Harrison, S. K., and Regnier, E. 2005. Response of horseweed biotypes to foliar applications of cloransulam-methyl and glyphosate. Weed Technol. 19:231–236.Google Scholar
Vangessel, M. J., Ayeni, A. O., and Majek, B. A. 2000. Optimum glyphosate timing with or without residual herbicides in glyphosate-resistant soybean (Glycine max) under full-season conventional tillage. Weed Technol. 14:140–149.Google Scholar