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Reduced Translocation Is the Cause of Antagonism of Glyphosate by MSMA in Browntop Millet (Brachiaria ramosa) and Palmer Amaranth (Amaranthus palmerii)

Published online by Cambridge University Press:  20 January 2017

Ian C. Burke ,
Clifford H. Koger ,
Krishna N. Reddy  and
John W. Wilcut
Ian C. Burke*
Affiliation:
USDA-ARS, Southern Weed Science Research Unit, 141 Experiment Station Road, P.O. Box 350, Stoneville, MS 38776
Clifford H. Koger
Affiliation:
USDA-ARS, Crop Genetics and Production Research Unit, 141 Experiment Station Road, P.O. Box 345, Stoneville, MS 38776
Krishna N. Reddy
Affiliation:
USDA-ARS, Southern Weed Science Research Unit, 141 Experiment Station Road, P.O. Box 350, Stoneville, MS 38776
John W. Wilcut
Affiliation:
Crop Science Department, North Carolina State University, Raleigh, NC 27695-7620
*
Corresponding author's E-mail: icburke@wsu.edu
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Abstract

Studies were conducted in growth chambers to characterize absorption and translocation of 14C-glyphosate applied alone or in mixture with MSMA in browntop millet and Palmer amaranth. MSMA antagonized activity of glyphosate in both weed species. Absorption of 14C-glyphosate in Palmer amaranth was rapid and increased with time from 11.1% at 0.5 h after treatment to 68.1% at 168 HAT. Absorption of 14C-glyphosate in browntop millet ranged from 1.6% at 0.5 HAT to 39.1% at 168 HAT. MSMA in mixture with glyphosate did not affect the absorption of glyphosate. In browntop millet, only 2.8% of the applied radioactivity translocated out of the treated leaf to the rest of the plant when glyphosate was applied in mixture with MSMA compared to 10.8% when glyphosate was applied alone at 72 HAT. Similarly, in Palmer amaranth, 3.2% of the applied radioactivity had translocated out of the treated leaf when glyphosate was applied in mixture with MSMA compared to 10.6% when glyphosate was applied alone. Reduced translocation appears to be the cause of the previously observed antagonism of glyphosate by MSMA.

Keywords

GlyphosateMSMAbrowntop millet, Brachiaria ramosa (L.) Stapf PANRAPalmer amaranth, Amaranthus palmerii S. Wats. AMAPAAbsorptionherbicide interactiontranslocation
Type
Research
Information
Weed Technology , Volume 21 , Issue 1 , March 2007 , pp. 166 - 170
Copyright
Copyright © Weed Science Society of America 

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References

Literature Cited

Anonymous, , 2005. Roundup WeatherMax label. St. Louis, MO Monsanto. 19.Google Scholar
Askew, S. D., Bailey, W. A., Scott, G. H., and Wilcut, J. W. 2002. Economic assessment of weed management for transgenic and nontransgenic cotton in tilled and nontilled systems. Weed Sci. 50:512–520.Google Scholar
Croon, K. A., Ketchersid, M. L., and Merkle, M. G. 1989. Effect of bentazon, imazaquin, and chlorimuron on the absorption and translocation of the methyl-ester of haloxyfop. Weed Sci. 37:645–650.Google Scholar
Culpepper, A. S., Webster, T. M., York, A. C., Barrentine, R. M., and Mullinix, B. G. Jr. 2004. Glyphosate/MSMA mixtures in glyphosate-resistant cotton (Gossypium hirsutum). J. Cotton Sci. 8:124–129.Google Scholar
Culpepper, A. S., York, A. C., Jordan, D. L., Corbin, F. T., and Sheldon, Y. S. 1999. Basis for antagonism in mixtures of bromoxynil plus quizalofop-P applied to yellow foxtail (Setaria glauca). Weed Technol. 13:515–519.Google Scholar
Dewey, S. A. and Appleby, A. P. 1983. A comparison between glyphosate and assimilate translocation patterns in tall morningglory (Ipomoea purpurea). Weed Sci. 31:308–314.Google Scholar
Draper, N. R. and Smith, H. 1981. Applied Regression Analysis. New York J. Wiley. 33–42.Google Scholar
Duke, S. O. 1992. Modes of action of herbicides used in cotton. in McWhorter, C.G., Abernathy, J.L., eds. Weeds of Cotton. Memphis, TN The Cotton Foundation. 403–437.Google Scholar
Knowles, F. C. and Benson, A. A. 1983. The biochemistry of arsenic. Trends Biochem. Sci. 8:178–180.Google Scholar
Koger, C. H., Burke, I. C., Miller, D. K., Kendig, A. J., Reddy, K. N., and Wilcut, J. W. 2007. MSMA antagonizes glyphosate and glufosinate efficacy on broadleaf and grass weeds. Weed Technol. 21:159–165.Google Scholar
Koger, C. H. and Reddy, K. N. 2005. Glyphosate efficacy, absorption, and translocation in pitted morningglory (Ipomoea lacunosa). Weed Sci. 53:277–283.CrossRefGoogle Scholar
Li, J. M., Smeda, R. J., Sellers, B. A., and Johnson, W. G. 2005. Influence of formulation and glyphosate salt on absorption and translocation in three annual weeds. Weed Sci. 53:153–159.Google Scholar
Monks, C. D., Patterson, M. G., Wilcut, J. W., and Delaney, D. P. 1999. Effect of pyrithiobac, MSMA, and DSMA on cotton (Gossypium hirsutum L.) growth and weed control. Weed Technol. 13:6–11.CrossRefGoogle Scholar
Olson, W. and Nalewaja, J. D. 1982. Effect of MCPA on 14C-diclofop uptake translocation. Weed Sci. 30:59–63.Google Scholar
Pereira, W. and Crabtree, G. 1986. Absorption, translocation, and toxicity of glyphosate and oxyfluorfen in yellow nutsedge (Cyperus esculentus). Weed Sci. 34:923–929.CrossRefGoogle Scholar
Pline-Srnic, W. A., Edmisten, K. L., Wilcut, J. W., Wells, R., and Thomas, J. L. 2004. Effect of glyphosate on fruit retention, yield, and fiber quality of glyphosate resistant cotton. J. Cotton Sci. 8:24–32.Google Scholar
Porterfield, D., Wilcut, J. W., and Askew, S. D. 2002. Weed management with CGA-362622, fluometuron, and prometryn in cotton. Weed Sci. 50:642–647.Google Scholar
Sandberg, C. L., Meggitt, W. F., and Penner, D. 1980. Absorption, translocation and metabolism of glyphosate-C14 in several weed species. Weed Res. 20:195–200.Google Scholar
[SAS] Statistical Analysis Systems 1998. SAS/STAT User's Guide. Release 7.00. Cary, NC Statistical Analysis Systems Institute. 1028.Google Scholar