Hostname: page-component-78c5997874-m6dg7 Total loading time: 0 Render date: 2024-11-08T02:57:16.319Z Has data issue: false hasContentIssue false
  • English
  • Français

In-Crop and Autumn-Applied Glyphosate Reduced Purple Nutsedge (Cyperus rotundus) Density in No-Till Glyphosate-Resistant Corn and Soybean

Published online by Cambridge University Press:  20 January 2017

Krishna N. Reddy  and
Charles T. Bryson
Krishna N. Reddy*
Affiliation:
Southern Weed Science Research Unit, Agricultural Research Service, U.S. Department of Agriculture, P.O. Box 350, Stoneville, MS 38776
Charles T. Bryson
Affiliation:
Southern Weed Science Research Unit, Agricultural Research Service, U.S. Department of Agriculture, P.O. Box 350, Stoneville, MS 38776
*
Corresponding author's E-mail: [email protected].
Get access Rights & Permissions [Opens in a new window]

Abstract

A 3-yr field study was conducted from 2005 to 2007 at Stoneville, MS, to determine efficacy of in-crop and autumn-applied glyphosate on purple nutsedge density and yield of no-till glyphosate-resistant (GR) corn and GR soybean. Separate experiments were conducted in GR corn and GR soybean in areas maintained under a no-tillage system after the autumn of 2004. Each experiment was conducted in a split-plot arrangement of treatments in a randomized complete-block design with and without autumn application of glyphosate at 1.68 kg ae/ha as main plots and in-crop herbicide application (glyphosate- and nonglyphosate-based programs) as subplots with three replications. In GR corn, glyphosate applied in the autumn reduced purple nutsedge density by 40 to 67% compared with no glyphosate during 3 yr. In GR corn, glyphosate applied in-crop reduced purple nutsedge shoot density by 48% in 2005, 92% in 2006, and 100% in 2007 compared with no herbicide. However, GR corn yields were unaffected by either in-crop or autumn-applied glyphosate. In GR soybean, glyphosate applied in the autumn reduced purple nutsedge shoot density by 64 to 83% compared with no glyphosate during 3 yr. Glyphosate applied in-crop in GR soybean reduced purple nutsedge density by 81% in 2005 and by 100% in 2006 and 2007 compared with no herbicide. GR soybean yields were similar in 2005, but yields were 34 and 18% higher in 2006 and 2007, respectively, with autumn-applied glyphosate compared with no glyphosate. GR soybean yields were higher with glyphosate applied in-crop compared with no herbicide in 2 of 3 yr. These results indicate that purple nutsedge density could be reduced with glyphosate applied in-crop in no-till GR corn and GR soybean. In addition, autumn-applied glyphosate was effective in reducing purple nutsedge populations following harvest of crops and could be an effective purple nutsedge management strategy regardless of GR trait.

Keywords

GlyphosatechlorimuronhalosulfuronS-metolachlorpurple nutsedge, Cyperus rotundus L. CYPROcorn, Zea mays L.soybean, Glycine max (L.) MerrConservation tillagetransgenic cropweed densityweed management
Type
Weed Management—Major Crops
Information
Weed Technology , Volume 23 , Issue 3 , September 2009 , pp. 384 - 390
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

Akin, D. S. and Shaw, D. R. 2001. Purple nutsedge (Cyperus rotundus) and yellow nutsedge (Cyperus esculentus) control in glyphosate-tolerant soybean (Glycine max). Weed Technol 15:564–570.CrossRefGoogle Scholar
Anonymous 2009. Dual II Magnum® herbicide product label. Syngenta Crop Protection Publication No. SCP 818A-L1M 0204. Greensboro, NC: Syngenta. 36. http://www.syngentacropprotection.com/pdf/labels/SCP818AL1M0204n.pdf. Accessed: January 28, 2009.Google Scholar
Anonymous 2008. Permit® herbicide label. Gowan Company Publication No. 01-R0806EPA. Yuma, AZ: Gowan. 18. http://www.gowanco.com/ProductInfopid75Permit20.aspx. Accessed: November 6, 2008.Google Scholar
Bariuan, J. V., Reddy, K. N., and Wills, G. D. 1999. Glyphosate injury, rainfastness, absorption, and translocation in purple nutsedge (Cyperus rotundus). Weed Technol 13:112–119.CrossRefGoogle Scholar
Bendixen, L. E. and Nandihalli, U. B. 1987. Worldwide distribution of purple and yellow nutsedge (Cyperus rotundus and C. esculentus). Weed Technol 1:61–65.CrossRefGoogle Scholar
Bryson, C. T. and Carter, R. 2008. The significance of Cyperaceae as weeds. Pages 15–101. In Naczi, R. F. C. and Ford, B. A. Sedges: Uses, Diversity, and Systematics of the Cyperaceae. Monogr. Syst. Bot. Missouri Bot. Gard. 108.Google Scholar
Bryson, C. T., Reddy, K. N., and Molin, W. T. 2003. Purple nutsedge (Cyperus rotundus) population dynamics in narrow row transgenic cotton (Gossypium hirsutum) and soybean (Glycine max) rotation. Weed Technol 17:805–810.CrossRefGoogle Scholar
Edenfield, M. W., Brecke, B. J., Colvin, D. L., Dusky, J. A., and Shilling, D. G. 2005. Purple nutsedge (Cyperus rotundus) control with glyphosate in soybean and cotton. Weed Technol 19:947–953.CrossRefGoogle Scholar
Elliott, S. 1821. A Sketch of the Botany of South Carolina and Georgia. Volume 1. Charleston, SC: J.R. Schenck. 606.Google Scholar
Hammerton, J. L. 1974. Experiments with Cyperus rotundus L., I: growth and development and effects of 2,4-D and paraquat. Weed Res 14:365–369.CrossRefGoogle Scholar
Holm, L. G., Plucknett, D. L., Pancho, J. V., and Herberger, J. P. 1977. The World's Worst Weeds: Distribution and Biology. Honolulu: University Press of Hawaii. 609.Google Scholar
Keeley, P. E. 1987. Interference and interaction of purple and yellow nutsedges (Cyperus rotundus and C. esculentus) with crops. Weed Technol 1:74–81.CrossRefGoogle Scholar
Keeley, P. E. and Thullen, R. J. 1971. Control of nutsedge with organic arsenical herbicides. Weed Sci 19:601–606.CrossRefGoogle Scholar
Miles, J. E., Nishimoto, R. K., and Kawabata, O. 1996. Diurnally altering temperatures stimulate sprouting of purple nutsedge (Cyperus rotundus) tubers. Weed Sci 44:122–125.CrossRefGoogle Scholar
Norsworthy, J. H., Schroeder, J., Thomas, S. H., and Murray, L. W. 2007. Purple nutsedge (Cyperus rotundus) management in direct-seeded chile pepper using halosulfuron and cultivation. Weed Technol 21:636–641.CrossRefGoogle Scholar
Patterson, D. T. 1982. Shading responses of purple and yellow nutsedges (Cyperus esculentus and C. rotundus). Weed Sci 30:25–30.CrossRefGoogle Scholar
Pereira, W., Crabtree, G., and William, R. D. 1987. Herbicide action on purple and yellow nutsedge (Cyperus rotundus and C. esculentus). Weed Technol 1:92–98.CrossRefGoogle Scholar
Rankins, A. Jr., Byrd, J. D. Jr., Mask, D. B., Barnett, J. W., and Gerard, P. D. 2005. Survey of soybean weeds in Mississippi. Weed Technol 19:492–498.CrossRefGoogle Scholar
Rao, A. S. and Reddy, K. N. 1999. Purple nutsedge (Cyperus rotundus) and sicklepod (Senna obtusifolia) response to glyphosate mixtures with ALS-inhibiting herbicides. Weed Technol 13:361–366.CrossRefGoogle Scholar
Reddy, K. N. 2005. Deep tillage and glyphosate reduced redvine (Brunnichia ovata) and trumpetcreeper (Campsis radicans) populations in glyphosate-resistant soybean. Weed Technol 19:713–718.CrossRefGoogle Scholar
Reddy, K. N. and Bendixen, L. E. 1988. Toxicity, absorption, translocation, and metabolism of foliar-applied chlorimuron in yellow and purple nutsedge (Cyperus esculentus and C. rotundus). Weed Sci 36:707–712.CrossRefGoogle Scholar
Thullen, R. J. and Keeley, P. E. 1979. Seed production and germination in Cyperus esculentus and C. rotundus . Weed Sci 27:502–505.CrossRefGoogle Scholar
Tucker, G. C., Marcks, B. G., and Carter, J. R. 2002. Cyperus . Pages 141–191. In Ball, P. W., Gandhi, K., Kiger, R. W., Murray, D., Zarucchi, J. L., Reznicek, A. A., and Strother, J. L. Flora of North America. Volume 23. New York: Oxford University Press.Google Scholar
Webster, T. M. 2005. Weed survey—southern states. Proc. South. Weed Sci. Soc 58:291–306.Google Scholar
Webster, T. M. 2008. Weed survey—southern states. Proc. South. Weed Sci. Soc 61:224–243.Google Scholar
Webster, T. M., Grey, T. L., Davis, J. W., and Culpepper, A. S. 2008. Glyphosate hinders purple nutsedge (Cyperus rotundus) and yellow nutsedge (Cyperus esculentus) tuber production. Weed Sci 56:735–742.CrossRefGoogle Scholar
Wills, G. D. 1987. Description of purple and yellow nutsedge (Cyperus rotundus and C. esculentus). Weed Technol 1:2–9.CrossRefGoogle Scholar
Zandstra, B. H. and Nishimoto, R. K. 1977. Movement and activity of glyphosate in purple nutsedge. Weed Sci 25:268–274.CrossRefGoogle Scholar