Hostname: page-component-76fb5796d-x4r87 Total loading time: 0 Render date: 2024-04-26T07:23:05.928Z Has data issue: false hasContentIssue false
  • English
  • Français

Response of nonglyphosate-resistant cotton to reduced rates of glyphosate

Published online by Cambridge University Press:  20 January 2017

Donnie K. Miller ,
Robert G. Downer ,
B. Roger Leonard ,
E. Merritt Holman  and
Steve T. Kelly
Robert G. Downer
Affiliation:
Department of Experimental Statistics, LSU AgCenter, Baton Rouge, LA 70803
B. Roger Leonard
Affiliation:
Macon Ridge Location of Northeast Research Station, LSU AgCenter, Winnsboro, LA 71295
E. Merritt Holman
Affiliation:
LSU Northeast Research Station, LSU AgCenter, St. Joseph, LA 71366
Steve T. Kelly
Affiliation:
Scott Research and Extension Center, LSU AgCenter, Winnsboro, LA 71295
Get access Rights & Permissions [Opens in a new window]

Abstract

Field research was conducted in 1999 and 2000 to determine the effect of reduced glyphosate rates on growth and yield of nonglyphosate-resistant cotton. Rates of 9, 18, 35, 70, 140, and 280 g ha−1, representing 0.008, 0.016, 0.031 0.063, 0.125, and 0.25, respectively, of the maximum use rate per application (1,120 g ha−1), were applied to cotton at the two-, five-, or nine-node growth stage. On the basis of visual injury estimates, cotton was more tolerant to glyphosate at the nine-node than at earlier growth stages. Plant dry weight was reduced with 70 g ha−1 of glyphosate or higher, when applied at the two- and five-node growth stages in two of three experiments. Dry weight was not affected by glyphosate at the nine-node stage. Plant height also was unaffected by glyphosate rates below 70 g ha−1, but height reduction was noted for all growth stages by experiment combinations, with the exception of the nine-node application for both experiments in 2000, with herbicide rates of 70 g ha−1 or higher. Cotton maturity delay, as noted by an increase in node above white flower number, was observed only at the highest glyphosate rate applied to two- and five-node cotton in one of three experiments. Percent open boll data analysis indicated a decreased opportunity of observing an open boll with increasing glyphosate rate, and this effect was greater at the five-node compared with the two- and nine-node stages in two of three experiments. Seedcotton yield after all glyphosate applications was equivalent to that for the nontreated control.

Keywords

Glyphosatecotton, Gossypium hirsutum L. ‘Stoneville 474’, ‘DP33B’Crop injurynontarget applicationdrift
Type
Special Topics
Information
Weed Science , Volume 52 , Issue 1 , February 2004 , pp. 178 - 182
Copyright
Copyright © 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.)

References

Literature Cited

Baldwin, F. L. 1995. Weed control in Roundup tolerant soybeans. Proc. South. Weed Sci. Soc 48:46.Google Scholar
Banks, P. A. and Schroeder, J. 2000. Carrier volume effects herbicide activity in simulated spray drift studies. Proc. South. Weed Sci. Soc 53:173.Google Scholar
Chandler, J. M. and Prostko, E. P. 1997. Management of johnsongrass and morningglories in Roundup Ready cotton. Proc. South. Weed Sci. Soc 50:3.Google Scholar
Clay, P. A., Griffin, J. L., and Jordan, D. L. 1995. Sicklepod (Senna obtusifolia) control programs in Roundup Ready soybeans. Proc. South. Weed Sci. Soc 48:49–50.Google Scholar
Collett, D. 1991. Modelling Binary Data. London: Chapman and Hall. Pp. 56–62.Google Scholar
Crawford, S. H., Vidrine, P. R., and Collins, R. K. 1990. Phytotoxicity of quinclorac to cotton. Proc. South. Weed Sci. Soc 43:117.Google Scholar
Culpepper, A. S. and York, A. C. 1998. Weed management in glyphosate-tolerant cotton. J. Cotton Sci 4:174–185.Google Scholar
Culpepper, A. S. and York, A. C. 1999. Weed management and net returns with transgenic, herbicide resistant, and non-transgenic cotton (Gossypium hirsutum). Weed Technol 13:411–420.Google Scholar
Ellis, J. M. and Griffin, J. L. 2002. Soybean (Glycine max) and cotton (Gossypium hirsutum) response to simulated drift of glyphosate and glufosinate. Weed Technol. 16:580–586.Google Scholar
Franz, J. E., Mayo, M. K., and Sikorski, J. A. 1997. Toxicology and environmental properties of glyphosate. Pages 103–137 in Glyphosate: A Unique Global Herbicide. Washington, D.C.: American Chemical Society Monograph 189.Google Scholar
Johnson, W. G., Kendig, J. A., Wait, J. D., Holman, C. S., Li, J., and Ohmes, G. A. 2000. Johnsongrass management in herbicide resistant corn. Proc. South. Weed Sci. Soc 53:221.Google Scholar
Keeling, J. W., Lyon, L. L., Baughman, T. A., Osborne, T. S., and Dotray, P. A. 2002. Proc. Beltwide Cotton Conf. www.cotton.org.Google Scholar
Kelly, S. T., Barnett, J., Miller, D. K., and Vidrine, P. R. 2001. Managing Glyphosate-tolerant Cotton. LCES Pub. 2838 2/01, p. 14.Google Scholar
Miller, D. K., Pinnell-Alison, C., Williams, B. J., Kelly, S. T., and Lee, D. R. 2001. Johnsongrass resistance to graminicides in Northeast Louisiana. Louisiana Agric 44:19–20.Google Scholar
Neter, J., Kutner, M. H., Nachstshamand, C. J., and Wasserman, W. 1996. Applied Linear Regression Models. 3rd ed. Toronto: Irwin. Pp. 327–334.Google Scholar
Rowland, C. D., Reynolds, D. B., and Blackley, R. H. Jr. 1999. Corn and cotton response to drift rates of non-desired herbicide application. Proc. South. Weed Sci. Soc 52:30.Google Scholar
Shaw, D. R., Arnold, J. C., Snipes, C. E., Laughlin, D. H., and Mills, J. A. 2001. Comparison of glyphosate-resistant and non-transgenic soybean (Glycine max) herbicide systems. Weed Technol 15:676–685.CrossRefGoogle Scholar
Snipes, C. E., Street, J. E., and Mueller, T. C. 1992. Cotton (Gossypium hirsutum) injury from simulated quinclorac drift. Weed Sci 40:106–109.CrossRefGoogle Scholar
Thomas, W. E., Robinson, B., Burke, I. C., Pline, W. A., Wilcut, J. W., Edninsten, K. L., and Wells, R. 2002. Yield and physiological response of non-transgenic cotton to Roundup Ultramax drift. Proc. Bettwide Cotton Conf. www.cotton.org.Google Scholar