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Effect of pH on the Phytotoxicity of Prometryne Applied to Synthetic Soil Media

Published online by Cambridge University Press:  12 June 2017

J. B. Weber ,
P. W. Perry  and
K. Ibaraki
J. B. Weber
Affiliation:
North Carolina State University
P. W. Perry
Affiliation:
Monsanto Co., St. Louis, Mo.
K. Ibaraki
Affiliation:
Kyushu Agr. Exp. Sta., Izumi, Chikugo, Japan
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Abstract

Additions of montmorillonite clay and soil of high organic matter content to growth media consisting of sand and nutrient solution significantly decreased the phytotoxicity of 2-methylthio-4,6-bis(isopropylamino)-s-triazine (prometryne) to wheat [Triticum aestivum L. em. Thell. (aestivum group) “Wakeland”]. Phytotoxicity was decreased to a greater extent at pH 4.5 than at pH 6.5. The reduction in phytotoxicity was attributed to adsorption of the herbicide by the additives. A larger proportion of the prometryne was present in the protonated form at the lower pH and the increased adsorption probably resulted from the coulombic bonding of these cations to the soil additives. Adsorption mechanisms are postulated and discussed.

Type
Research Article
Information
Weed Science , Volume 16 , Issue 2 , April 1968 , pp. 134 - 136
Copyright
Copyright © Weed Science Society of America 

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References

Literature Cited

1. Aelbers, E. and Homburg, K. 1959. The inactivation and penetration of simazine into the soil. Meded. Landbhogesch. Gent. 24:893–898.Google Scholar
2. Burnside, O. C. and Behrens, R. 1961. Phytotoxicity of simazine. Weeds 9:145–157.CrossRefGoogle Scholar
3. Frissel, M. J. 1961. The adsorption of some organic compounds, especially herbicides, on clay minerals. Versl. Landbouwk. Onderz. N. R. 673 - Wageningen. 54pp.Google Scholar
4. Harris, C. I. 1966. Adsorption, movement, and phytotoxicity of monuron and s-triazine herbicides in soil. Weeds 14:6–10.CrossRefGoogle Scholar
5. Hernandez, T. P. and Warren, G. F. 1950. Some factors affecting the rate of inactivation and leaching of 2,4-D in different soils. Amer. Soc. Hort. Sci. 56:287–293.Google Scholar
6. Kononova, M. M. 1961. Soil Organic Matter. Pergamon Press, Inc., New York. 450 pp.Google Scholar
7. Kries, O. H. 1947. Persistence of 2,4-dichlorophenoxyacetic acid in soil in relation to content of water, organic matter and lime. Bot. Gaz. 108:510–525.CrossRefGoogle Scholar
8. Sheets, T. J., Crafts, A. S., and Drever, H. R. 1962. Influence of soil properties on the phytotoxicities of the s-triazine herbicides. J. Agr. Food Chem. 10:458–462.CrossRefGoogle Scholar
9. Talbert, R. E. and Fletchall, O. H. 1965. The adsorption of some s-triazines in soils. Weeds 13:46–52.CrossRefGoogle Scholar
10. Upchurch, R. P. and Mason, D. D. 1962. The influence of soil organic matter on the phytotoxicity of herbicides. Weeds 10:9–14.CrossRefGoogle Scholar
11. Weber, J. B., Perry, P. W., and Upchurch, R. P. 1965. The influence of temperature and time on the adsorption of paraquat, diquat, 2,4-D and prometone by clays charcoal and an anion exchange resin. Proc. Soil Sci. Soc. Amer. 29:678–688.CrossRefGoogle Scholar
12. Weber, J. B. 1966. Molecular structure and pH effects on the adsorption of 13 s-triazine compounds on montmorillonite clay. Amer. Mineralogist 51:1657–1670.Google Scholar
13. Weber, J. B. 1967. Spectrophotometrically determined ionization constants of 13 alkylamino s-triazines and the relationships of molecular structure and basicity. Spectrochimica Acta 23A:458–461.CrossRefGoogle Scholar