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Droplet size affects glyphosate retention, absorption, and translocation in corn

Published online by Cambridge University Press:  20 January 2017

Tommy Chiu
Affiliation:
Monsanto Co., 700 Chesterfield Village Parkway, St. Louis, MO 63198
R. Douglas Sammons
Affiliation:
Monsanto Co., 700 Chesterfield Village Parkway, St. Louis, MO 63198
Jan S. Ryerse
Affiliation:
St. Louis University Health Sciences Center, St. Louis, MO 63104

Abstract

The effect of droplet size on retention, absorption, and translocation of 14C-glyphosate was studied in glyphosate-resistant corn. Fine, medium, and coarse spray droplets were studied using a track-sprayer equipped with commercially available nozzles. Glyphosate-resistant corn was used to obtain measurements at field use rates in the absence of phytotoxicity. Spray retention on corn leaves was calculated based on recovered glyphosate per leaf area, and retention was higher with application of fine droplets (47%) than with application of coarse (38%) and medium (37%) droplets. Absorption in corn leaves was directly correlated with droplet size and reached a plateau 1 d after treatment (DAT) for all droplet sizes. Based on glyphosate recovered 3 DAT, coarse droplets showed the highest absorption (49%), followed by medium (35%) and fine (30%) droplets. Percentage of translocation also increased with droplet size, and translocation was primarily toward strong sink tissues such as roots and young leaves. Our results show that large droplets have slightly reduced retention in corn but have increased absorption resulting in increased translocation of glyphosate to growing sink tissues.

Type
Research Article
Copyright
Copyright © Weed Science Society of America 

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References

Literature Cited

Buhler, D. D. and Burnside, O. C. 1987. Effects of application variables on glyphosate phytotoxicity. Weed Technol. 1:1417.CrossRefGoogle Scholar
Casely, J. C. and Coupland, D. 1985. Environmental and plant factors affecting glyphosate uptake, movement and activity. Pages 92123 In Grossbard, E. and Atkinson, D., eds. The Herbicide Glyphosate. London: Butterworth.Google Scholar
Cranmer, J. R. and Linscott, D. L. 1991. Effects of droplet composition on glyphosate absorption and translocation in velvetleaf (Abutilon theophrasti). Weed Sci. 39:251254.CrossRefGoogle Scholar
Denis, M. H. and Delrot, S. 1997. Effects of salt and surfactants on foliar uptake and long distance transport of glyphosate. Plant Physiol. Biochem. 35:291301.Google Scholar
Derksen, R. C., Ozkan, H. E., Fox, R. E., and Brazee, R. D. 1999. Droplet spectra and wind tunnel evaluations of air-induction and pre-orifice nozzles. Trans. Am. Soc. Agric. Engl. 42:15731580.CrossRefGoogle Scholar
De Ruiter, H., Uffing, A.J.M., and Meinen, E. 1996. Influence of surfactants and ammonium sulfate on glyphosate phytotoxicity to quackgrass (Elytigia repens). Weed Technol. 10:803808.CrossRefGoogle Scholar
De Ruiter, H., Uffing, A.J.M., Meinen, E., and Prins, A. 1990. Influence of surfactants and plant species on leaf retention of spray solutions. Weed Sci. 38:567572.CrossRefGoogle Scholar
Duncan Yerkes, C. N. and Weller, S. C. 1996. Diluent volume influences susceptibility of field bindweed (Convolvulus arvensis) biotypes to glyphosate. Weed Technol. 10:565569.CrossRefGoogle Scholar
Etheridge, R. E., Womac, A. R., and Mueller, T. C. 1999. Characterization of the spray droplet spectra and patterns of four venturi-type drift reduction nozzles. Weed Technol. 13:765770.Google Scholar
Feng, P.C.C., Ryerse, J. S., and Sammons, R. D. 1998. Correlation of leaf damage with uptake and translocation of glyphosate in velvetleaf (Abutilon theophrasti). Weed Technol. 12:300307.CrossRefGoogle Scholar
Feng, P.C.C., Sandbrink, J. J., and Sammons, R. D. 2000a. Retention, uptake, and translocation of 14C-glyphosate from track-spray applications and correlation to rainfastness in velvetleaf (Abutilon theophrasti). Weed Technol. 14:127132.Google Scholar
Feng, P.C.C., Sandbrink, J. J., and Cowell, J. E. 2000b. Retention, uptake and translocation of 14C-glyphosate from track-spray applications to weeds and correlation to rainfastness. Weed Sci. Soc. Am. Abstr. 40:17.Google Scholar
Gaskin, R. E. and Holloway, P. J. 1992. Some physicochemical factors influencing foliar uptake enhancement of glyphosate mono(isopropylammonium) by polyoxyethelene surfactants. Pestic. Sci. 34:195206.CrossRefGoogle Scholar
Geiger, D. R. and Bestman, H. D. 1990. Self-limitation of herbicide mobility by phytotoxic action. Weed Sci. 38:324329.CrossRefGoogle Scholar
Geiger, D. R., Shieh, W. J., and Fuchs, M. A. 1999. Causes of self-limited translocation of glyphosate in Beta vulgaris plants. Pestic. Biochem. Physiol. 64:124133.CrossRefGoogle Scholar
Jordan, T. N. 1981. Effects of diluents volumes and surfactants on the phytotoxicity of glyphosate to bermudagrass. Weed Sci. 29:7983.CrossRefGoogle Scholar
Kirkwood, R. C. and McKay, I. 1994. Accumulation and elimination of herbicides in selected crop and weed species. Pestic. Sci. 42:241249.Google Scholar
Liu, S. H., Campbell, R. A., Studens, J. A., and Wagner, R. G. 1996. Absorption and translocation of glyphosate in aspen (Populus tremuloides Michx.) as influenced by droplet size, droplet number, and herbicide concentration. Weed Sci. 44:482488.Google Scholar
Ramsdale, B. R. and Messersmith, C. G. 2001a. Drift-reducing nozzle effects on herbicide performance. Weed Technol. 15:453460.CrossRefGoogle Scholar
Ramsdale, B. R. and Messersmith, C. G. 2001b. Nozzle, spray volume, and adjuvant effects on carfentrazone and imazamox. Weed Technol. 15:485491.CrossRefGoogle Scholar
Riechers, D. E., Wax, L. M., Liebl, R. A., and Bush, D. R. 1994. Surfactant-increased glyphosate uptake into plasma membrane vesicles isolated from common lambsquarters leaves. Plant Physiol. 105:14191425.CrossRefGoogle ScholarPubMed
Ryerse, J. S., Feng, P.C.C., and Sammons, R. D. 2001. Endogenous fluorescence identifies dead cells in plants. Microscopy Today. 1:2224.CrossRefGoogle Scholar