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Ammonium Sulfate Enhancement of Glyphosate and SC-0224 Control of Johnsongrass (Sorghum halepense)

Published online by Cambridge University Press:  12 June 2017

Clay D. Salisbury ,
James M. Chandler  and
Morris G. Merkle
Clay D. Salisbury
Affiliation:
Soil and Crop Sci. Dep., Texas A & M Univ., College Station, TX 77843
James M. Chandler
Affiliation:
Soil and Crop Sci. Dep., Texas A & M Univ., College Station, TX 77843
Morris G. Merkle
Affiliation:
Soil and Crop Sci. Dep., Texas A & M Univ., College Station, TX 77843
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Abstract

Ammonium sulfate enhanced the initial control of johnsongrass by glyphosate and SC-0224 applied in the fall or summer. Glyphosate at 0.42 kg ha-1 in combination with ammonium sulfate at 3.33 kg ha-1 provided levels of fall johnsongrass control and spring regrowth control comparable to glyphosate at 0.84 kg ha-1. Spring applications to mixed populations of seedling and rhizome johnsongrass showed that ammonium sulfate added to glyphosate or SC-0224 afforded little enhancement of herbicide efficacy. Glyphosate or SC-0024 at 0.42 kg ha-1 applied in combination with logarithmically decreasing rates of ammonium sulfate demonstrated reduced weed control with ammonium sulfate rates above 9.7 kg ha-1.

Keywords

Glyphosate, N-(phosphonomethyl)glycineSC-0224, trimethylsulfonium carboxymethylaminomethylphosphonatejohnsongrass, Sorghum halepense (L.) Pers. ♯ SORHAammonium sulfateSpray additivelogarithmic application
Type
Research
Information
Weed Technology , Volume 5 , Issue 1 , March 1991 , pp. 18 - 21
Copyright
Copyright © 1990 by the Weed Science Society of America 

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References

Literature Cited

1. Brooks, R. L., Merkle, M. G., and Chandler, J. M. 1985. Efficacy of glyphosate/adjuvant combinations for johnsongrass control. Proc. South. Weed Sci. Soc. 38:46.Google Scholar
2. Brown, S. M., Chandler, J. M., and Morrison, J. E. Jr. 1988. Glyphosate for johnsongrass (Sorghum halepense) control in no-till sorghum (Sorghum bicolor). Weed Sci. 36:510–513.Google Scholar
3. Buhler, D. D., and Burnside, O. C. 1983. Effect of water quality, carrier volume, and acid on glyphosate phytotoxicity. Weed Sci. 31:163–169.Google Scholar
4. Chandler, J. M., and Merkle, M. G. 1983. Johnsongrass control in central Texas. Proc. South. Weed Sci. Soc. 36:40–41.Google Scholar
5. Costa, J., and Appleby, A. P. 1986. Effects of ammonium sulfate on leaf growth inhibitors by glyphosate in Cyperus esculentus L. Crop Prot. 5:314–318.Google Scholar
6. Jeffery, L. S., English, J. R., and Connell, J. 1981. The effects of fall application of glyphosate on corn (Zea mays), soybeans (Glycine max), and johnsongrass (Sorghum halepense). Weed Sci. 29:190–195.Google Scholar
7. Jordan, T. N. 1981. Effects of diluent volume and surfactant on the phytotoxicity of glyphosate to bermudagrass. Weed Sci. 29:79–83.CrossRefGoogle Scholar
8. McWhorter, C. G., and Azlin, W. R. 1978. Effects of environment on the toxicity of glyphosate to johnsongrass and soybeans. Weed Sci. 26: 605–608.CrossRefGoogle Scholar
9. McWhorter, C. G., and Williford, J. R. 1980. Factors affecting the toxicity of glyphosate applied in the recirculating sprayer to johnsongrass and soybeans. Weed Sci. 28:59–63.Google Scholar
10. O'Sullivan, P. A., O'Donovan, J. T., 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
11. Sherrick, S. L., Holt, H. A., and Hess, F. D. 1986. Effects of adjuvants and environment during plant development on glyphosate absorption and translocation in field bindweed. Weed Sci. 34:811–816.Google Scholar
12. Suwunnamek, U., and Cheuysai, S. 1981. Activation of ammonium sulfate on glyphosate for control of purple nutsedge. Weeds and Weed Control in Asia. p. 113–120.Google Scholar
13. Turner, D. J., and Loader, M.C.P. 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
14. Turner, D. J. 1985. The effect of kaolin and other adjuvants on the activity of the herbicide glyphosate in glasshouse trials. Tests of Agrochemical and Cultivars. 6:104–105.Google Scholar
15. Wells, R. B., Witt, W. W., and Slack, C. H. 1986. Influence of additives with glyphosate on johnsongrass control. Proc. South. Weed Sci. Soc. 39:543.Google Scholar
16. Wills, G. D., and McWhorter, C. G. 1985. Effect of inorganic salts on the toxicity and translocation of glyphosate and MSMA in purple nutsedge (Cyperus rotundas). Weed Sci. 33:755–761.CrossRefGoogle Scholar
17. Young, R. S. 1983. Glyphosate plus adjuvants. Proc. Northeast. Weed Sci. Soc. 37:250–254.Google Scholar