Hostname: page-component-586b7cd67f-vdxz6 Total loading time: 0 Render date: 2024-11-22T17:22:38.109Z Has data issue: false hasContentIssue false
  • English
  • Français

Glyphosate Efficacy on Selected Weed Species Is Unaffected by Chemical Coapplication

Published online by Cambridge University Press:  20 January 2017

Derek M. Scroggs ,
Donnie K. Miller ,
James L. Griffin ,
James P. Geaghan ,
P. Roy Vidrine  and
Alexander M. Stewart
Derek M. Scroggs*
Affiliation:
Dean Lee Research Station, 8105 Tom Bowman Dr., Alexandria, LA 71302
Donnie K. Miller
Affiliation:
Northeast Research Station, LSU AgCenter, P.O. Box 438, St. Joseph, LA 71366
James L. Griffin
Affiliation:
Department of Agronomy, 104 Sturgis Hall, Baton Rouge, LA 70803
James P. Geaghan
Affiliation:
Department of Experimental Statistics, LSU AgCenter, 161 Agriculture Administration Building, Baton Rouge, LA 70803
P. Roy Vidrine
Affiliation:
Dean Lee Research Station, 8105 Tom Bowman Dr., Alexandria, LA 71302
Alexander M. Stewart
Affiliation:
Dean Lee Research Station, 8105 Tom Bowman Dr., Alexandria, LA 71302
*
Corresponding author's E-mail: [email protected]
Get access Rights & Permissions [Opens in a new window]

Abstract

A study was conducted in 2004 to determine the effect of coapplication of the insecticides acephate, acetamiprid, bifenthrin, cyfluthrin, cypermethrin, dicrotophos, dimethoate, emanectin benzoate, imidacloprid, indoxacarb, lambda-cyhalothrin, methoxyfenozide, spinosad, thiamethoxam, and zeta-cypermethrin; the plant growth-regulator mepiquat pentaborate; a foliar sodium calcium borate micronutrient solution; and a foliar nitrogen fertilizer solution with glyphosate on the efficacy of weeds that commonly infest cotton. Barnyardgrass, hemp sesbania, johnsongrass, pitted morningglory, and sicklepod were grown in outdoor containers and treated with glyphosate at 1,120 g ai/ha alone or in coapplication at the three-to four- or seven-to eight-leaf growth stage. Glyphosate efficacy, based on visual control ratings at 7, 14, and 28 d after treatment (DAT) and fresh weight reduction of weed biomass at 28 DAT, was unaffected by chemical coapplication or application timing. Averaged across application timing and visual rating interval, glyphosate alone controlled barnyardgrass 97%, hemp sesbania 68%, johnsongrass 98%, pitted morningglory 68%, and sicklepod 89%. These results indicate that glyphosate coapplications evaluated offer producers the ability to combine pest and crop management strategies and reduce application costs without sacrificing control of weeds evaluated.

Keywords

Acephateacetamipridbifenthrincyfluthrincypermethrindicrotophosdimethoateemanectin benzoateglyphosateimidaclopridindoxacarblambda-cyhalothrinmepiquat pentaboratemethoxyfenozidenitrogen fertilizer solution, (18.8% urea nitrogen and 6.2% water-soluble nitrogen)sodium calcium borate 10%spinosadthiamethoxamzeta-cypermethrinbarnyardgrass, Echinochloa crus-galli (L.) P. Beauv. # ECHCGhemp sesbania, Sesbania exaltata (Raf.) Rydb. ex A. W. Hill # SEBEXjohnsongrass, Sorghum halepense (L.) Pers. # SORHApitted morningglory, Ipomoea lacunosa L. # IPOLAsicklepod, Senna obtusifolia (L.) Irwin and Barneby # CASOBHerbicide–insecticide combinationspesticide compatibilityDAT, days after treatmentRCB, randomized complete block
Type
Research Article
Information
Weed Technology , Volume 19 , Issue 4 , December 2005 , pp. 1012 - 1016
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

Anonymous. 2002. Specimen label for Roundup Weathermax herbicide. St. Louis, MO: Monsanto Co. EPA reg. num. 524–537. 15 p.Google Scholar
Bagwell, R. D., Leonard, B. R., and Burris, G. et al. 2003. Cotton insect control 2003. Louisiana Agricultural Extension Service Publication No. 1083 5/2003 Rev. 5 p.Google Scholar
Bailey, W. A., Poston, D. H., Wilson, H. P., and Hines, T. E. 2002. Glyphosate interactions with manganese. Weed Technol. 16:792–799.CrossRefGoogle Scholar
Byrd, J. D. Jr. and York, A. C. 1988. Interactions of carbaryl and dimethoate with sethoxydim. Weed Technol. 2:433–436.CrossRefGoogle Scholar
Costello, R. W., Griffin, J. L., Leonard, B. R., Miller, D. K., and Church, G. E. 2005. Pyrithiobac and insecticide coapplication effects on cotton tolerance and broadleaf weed and thrips (Frankliniella spp.) control. Weed Technol. 19:430–436.CrossRefGoogle Scholar
Culpepper, A. S. and York, A. C. 1998. Weed management in glyphosate-tolerant cotton. J. Cotton Sci. 2:174–185.Google Scholar
Culpepper, A. S. and York, A. C. 1999. Weed management and net returns with transgenic, herbicide-resistant, and nontransgenic cotton (Gossypium hirsutum). Weed Technol. 13:411–420.CrossRefGoogle Scholar
Edmisten, K. L., York, A. C., and Yelverton, F. H. et al. 2005. North Carolina Cotton Production Guide: Web page: http://ipm.ncsu.edu/Production_Guides/Cotton/contents.html. Accessed: March 8, 2005.Google Scholar
Jones, M. A. and Snipes, C. E. 1999. Tolerance of transgenic cotton to topical applications of glyphosate. J. Cotton Sci. 3:19–26.Google Scholar
Keeling, J. W., Baughman, T. A., Everitt, J. D., Lyon, L. L., and Dotray, P. A. 2003. Tolerance and weed management in Roundup Ready Flex Cotton. Proc. Beltwide Cotton Conf. 1:2244.Google Scholar
Martens, A., Hart, J., Sammons, B., Cerny, E., Huber, S., and Oppenhuizen, M. 2003. 2002 Results of Roundup Ready Flex Cotton Trials. Proc. Beltwide Cotton Conf. 1:2245.Google Scholar
Mascarenhas, V. J. and Griffin, J. L. 1997. Weed control interactions associated with Roundup and insecticide mixtures. Proc. Beltwide Cotton Conf. 1:799–800.Google Scholar
Miller, D. K., Burris, E., Leonard, B. R., Downer, R. G., and Williams, B. J. 2005a. Control of selected broadleaf weeds with glufosinate as influenced by insecticide coapplication. Weed Technol. 19:740–744.CrossRefGoogle Scholar
Miller, D. K., Wilcut, J. W., Burris, E., Downer, R. G., and Cook, D. R. 2005b. Trifloxysulfuron and insecticide combination effects on broadleaf weeds and thrips control in cotton. Weed Technol. 19:783–788.CrossRefGoogle Scholar
Miller, D. K., Mathews, M. S., and Lee, D. R. 2004. Weed control programs in Roundup Ready Flex cotton. Proc. South. Weed Sci. Soc. 57:264.Google Scholar
Pankey, J. H., Griffin, J. L., Leonard, B. R., Miller, D. K., Downer, R. G., and Costello, R. W. 2004. Glyphosate-insecticide combination effects on weed and insect control in cotton (Gossypium hirsutum). Weed Technol. 18:698–703.CrossRefGoogle Scholar
Sankula, S. and Blumenthal, E. 2004. Impacts on US agriculture of biotechnology-derived crops planted in 2003—an update of eleven case studies. Washington, DC: National Center for Food and Agricultural Policy. p 35: Web page: http://www.monsantoafrica.com/content/resources/scientific/04/10-04b.pdf. Accessed: January 18, 2004.Google Scholar
[SAS] Statistical Analysis Systems. 2003. SAS/STAT User's Guide. Release 9.1. Cary, NC: Statistical Analysis Systems Institute.Google Scholar
Webster, T. M. 2001. Weed survey—Southern states: 2001 broadleaf crops subsection. Proc. South. Weed Sci. Soc. 54:245–248.Google Scholar