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Reversal of Cation-Induced Reduction in Glyphosate Activity by EDTA

Published online by Cambridge University Press:  12 June 2017

Patrick J. Shea  and
Duane R. Tupy
Patrick J. Shea
Affiliation:
Dep. Agron., Univ. of Nebraska, Lincoln, NB 68583
Duane R. Tupy
Affiliation:
Dep. Agron., Univ. of Nebraska, Lincoln, NB 68583
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Abstract

Glyphosate [N-(phosphonomethyl)glycine] phytotoxicity to greenhouse-grown wheat (Triticum aestivum L. ‘Centurk’) was greatly reduced by Ca2+ in the carrier solution. Addition of ethylenediaminetetraacetic acid (EDTA) restored glyphosate phytotoxicity in hard water and increased phytotoxicity in deionized water. The phytotoxicity of 0.1 kg ae/ha glyphosate plus 1.0% (w/v) EDTA was equal to that observed for 0.2 kg/ha of the herbicide alone in deionized water or 0.4 kg/ha in water containing 200 ppm Ca2+. EDTA was more compatible with glyphosate in combination with X-77 or MON-0011 nonionic surfactant than with cationic surfactant (contained in a commercial formulation). Phytotoxicity could be increased by adding EDTA and nonionic surfactant to the latter formulation. EDTA increased glyphosate phytotoxicity to wheat when applied in water that contained high levels of calcium and bicarbonate. Glyphosate activity was greater at pH 4 than at pH 6 or 10, but EDTA was equally effective at pH 4, 6, or 10 for all levels of calcium tested up to 800 ppm. NaHCO3 probably reduced phytotoxicity by increasing the pH of the glyphosate solution.

Keywords

Additiveschelateshard watersequestrants
Type
Weed Control and Herbicide Technology
Information
Weed Science , Volume 32 , Issue 6 , November 1984 , pp. 802 - 806
Copyright
Copyright © 1984 by the Weed Science Society of America 

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References

Literature Cited

1. Ambach, R. M. and Ashford, R. 1982. Effects of variations in drop makeup on the phytotoxicity of glyphosate. Weed Sci. 30:221–224.CrossRefGoogle Scholar
2. Anderson, W. P. 1983. Weed Science Principles. Second Edition. West Publishing Co., New York. 490 pp.Google Scholar
3. Boss, W. F. and Mott, R. L. 1980. Effects of divalent cations and polyethylene glycol on the membrane fluidity of protoplast. Plant Physiol. 66:835–837.Google Scholar
4. Buhler, D. D. and Burnside, O. C. 1983. Effect of spray components on glyphosate toxicity to annual grasses. Weed Sci. 31:124–130.Google Scholar
5. Buhler, D. D. and Burnside, O. C. 1983. Effect of water quality, carrier volume, and acid on glyphosate phytotoxicity. Weed Sci. 31:163–169.CrossRefGoogle Scholar
6. Burnside, O. C. 1969. A laboratory sprayer-flamer. Weed Sci. 17:102–104.Google Scholar
7. Cascella, P. J. and Kindelspire, P. D. 1980. Effect of edetate disodium on goldfish membrane. J. Pharm. Sci. 69:972–974.Google Scholar
8. Chaberek, S. and Martell, A. E. 1959. Organic sequestering agents. John Wiley and Sons, New York. 572 pp.Google Scholar
9. Coratza, G. and Molina, A. M. 1978. Enhanced sensitivity to the photodynamic effect of 3,4-benzpyrene in ethylene-diaminetetraacetate-treated Escherichia coli . J. Bacteriol. 133:411–412.Google Scholar
10. Hensley, D. L., Beuerman, D. S. N., and Carpenter, P. L. 1978. The inactivation of glyphosate by various soils and metal salts. Weed Res. 18:287–291.Google Scholar
11. Leive, L. and Kollin, V. 1967. Controlling EDTA treatment to produce permeable Escherichia coli with normal metabolic processes. Biochem. Biophys. Res. Commun. 28:229–236.CrossRefGoogle ScholarPubMed
12. Linder, P. 1972. Effect of water in agricultural emulsions. Pages 453–469 in Tahori, A. S., ed. Herbicides, fungicides, formulation chemistry. Gordon and Breach Sci. Publ., London.Google Scholar
13. Lundager-Madsen, H. E., Christensen, H. H., and Gottlieb-Petersen, C. 1978. Stability constants of copper (II), zinc, manganese (II), calcium, and magnesium complexes of N-(phosphonomethyl) glycine (glyphosate). Acta. Chem. Scand. Ser. A 32:79–83.Google Scholar
14. O'Sullivan, P. A., Donovan, J. T. O., and Hamman, W. M. 1981. Influence of non-ionic surfactants, ammonium sulfate, water quality and spray volume on the phytotoxicity of glyphosate. Can. J. Plant Sci. 61:391–400.Google Scholar
15. Shea, P. J. and Tupy, D. R. 1983. Reversing divalent cation-induced reductions in glyphosate activity with chelating agents. Abstr. Weed Sci. Soc. Amer. No. 67. Page 28.Google Scholar
16. Sprankle, P., Meggitt, W. F., and Penner, D. 1975. Absorption, mobility, and microbial degradation of glyphosate in soil. Weed Sci. 23:229–234.Google Scholar
17. Stahlman, P. W. and Phillips, W. M. 1979. Effects of water quality and spray volume on glyphosate phytotoxicity. Weed Sci. 27:38–41.Google Scholar
18. Turner, D. J. and Loader, M. P. C. 1975. Further studies with additives: Effects of phosphate esters and ammonium salts on the activity of leaf-applied herbicides. Pestic. Sci. 6:1–10.Google Scholar
19. Turner, D. J. and Loader, M. P. C. 1978. Complexing agents as herbicide additives. Weed Res. 18:199–207.Google Scholar
20. Van Steveninck, R. F. M. 1965. The significance of calcium on the apparent peremeability of cell membranes and the effects of substitution with other divalent ions. Physiol. Plant. 18:54–69.Google Scholar
21. Windsor, E. and Cronheim, G. E. 1961. Gastro-intestinal absorption of heparin and synthetic heparinoids. Nature 190:263–264.Google Scholar