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Effect of Soil Organic Matter on the Phytotoxicity of Thirteen s-Triazine Herbicides

Published online by Cambridge University Press:  12 June 2017

A. Rahman  and
L. J. Matthews
A. Rahman
Affiliation:
Weed Res. Group, Ruakura Agric. Res. Centre, Hamilton, New Zealand
L. J. Matthews
Affiliation:
Weed Res. Group, Ruakura Agric. Res. Centre, Hamilton, New Zealand
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Abstract

The influence of soil organic matter on the initial and residual phytotoxicity of thirteen s-triazine herbicides was investigated in greenhouse experiments using three Horotiu sandy loam soils with organic matter levels of 9.8, 15.5, and 20.6%. The amount of herbicide required to reduce the growth of oats (Avena sativa L. ‘Mapua’) by 50% (GR50) when compared with the control was determined for each herbicide and each organic matter level. Results showed that the GR50 values for all herbicides were highly and positively correlated with the soil organic matter. In general, the phytotoxicity of compounds of high water solubility was less influenced by soil organic matter than those having low water solubility. The chloro-triazines persisted longer in soil than did the methoxy- or methylthio-triazines. Simazine [2-chloro-4,6-bis(ethylamino)-s-triazine] and atrazine [2-chloro-4-(ethylamino)-6-(isopropylamino)-s-triazine] were the most persistent of the chloro-triazines.

Keywords

Avena sativapersistencephytotoxicity
Type
Research Article
Information
Weed Science , Volume 27 , Issue 2 , March 1979 , pp. 158 - 161
Copyright
Copyright © 1979 by the Weed Science Society of America 

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References

Literature Cited

1. Adams, R. S. and Pritchard, D. J. 1977. Influence of soil pH on the phytotoxicity of three s-triazine herbicides. Agron. J. 69:820–824.Google Scholar
2. Bailey, G. W. and White, J. L. 1970. Factors influencing the adsorption, desorption and movement of pesticides in soil. Residue Rev. 32:29–92.Google Scholar
3. Best, J. A. and Weber, J. B. 1974. Disappearance of s-triazines as affected by soil pH using a balance-sheet approach. Weed Sci. 22:364–373.Google Scholar
4. Burney, B., Rahman, A., Oomen, G. A. C., and Whitham, J. M. 1975. The organic matter status of some mineral soils in New Zealand. Proc. New Zealand Weed Pest Control Conf. 28:101–103.Google Scholar
5. Carringer, R. D., Weber, J. B., and Monaco, T. J. 1975. Adsorption-desorption of selected pesticides by organic matter and montmorillonite. J. Agric. Food Chem. 23:568–572.Google Scholar
6. Colbert, F. O., Volk, V. V., and Appleby, A. P. 1975. Sorption of atrazine, terbutryn, and GS-14254 on natural and lime-amended soils. Weed Sci. 23:390–394.Google Scholar
7. Hamaker, J. W. and Thompson, J. M. 1972. Adsorption. Pages 49–143 in Goring, C. A. I. and Hamaker, J. W., eds. Organic Chemicals in the Soil Environment. Vol. 1. Marcel Dekker, Inc., New York.Google Scholar
8. Harris, C. I. and Sheets, T. J. 1965. Influence of soil properties on adsorption and phytotoxicity of CIPC, diuron, and simazine. Weeds 13:215–219.Google Scholar
9. Harrison, G. W., Weber, J. B., and Baird, J. V. 1976. Herbicide phytotoxicity as affected by selected properties of North Carolina soils. Weed Sci. 24:120–126.Google Scholar
10. Hayes, M. H. B. 1970. Adsorption of triazine herbicides on soil organic matter, including a short review on soil organic matter chemisty. Residue Rev. 32:131–174.Google Scholar
11. New Zealand Soil Bureau. 1968. Soils of New Zealand. New Zealand Soil Bureau Bull No. 26, Vol. 3, 127 pp.Google Scholar
12. Orwick, P. L., Schreiber, M. M., and Hodges, T. K. 1976. Absorption and efflux of chloro-s-triazines by Setaria roots. Weed Res. 16:139–144.Google Scholar
13. Rahman, A. 1976. Effect of soil organic matter on the phytotoxicity of soil-applied herbicides-glasshouse studies. New Zealand J. Exp. Agric. 4:85–88.Google Scholar
14. Rahman, A. 1977. Persistence of terbacil and trifluralin under different soil and climatic conditions. Weed Res. 17:145–152.Google Scholar
15. Rahman, A., Dyson, C. B., and Burney, B. 1978. Effect of soil organic matter on the phytotoxicity of soil applied herbicides-field studies. New Zealand J. Exp. Agric. 6:69–75.Google Scholar
16. Rahman, A., Manson, B. E., and Burney, B. 1977. Influence of selected soil properties on the phytotoxicity of soil-applied herbicides. Proc. Asian Pacific Weed Sci. Soc. Conf. (In press).Google Scholar
17. Sheets, T. J., Crafts, A. S., and Drever, H. R. 1962. Influence of soil properties on the phytotoxicities of the s-triazine herbicides. J. Agric. Food Chem. 10:458–462.Google Scholar
18. Slack, C. H., Thompson, L., and Rieck, C. E. 1973. Influence of tillage on the persistence of chloro-s-triazine herbicides. Proc. South. Weed Sci. Soc. 26:175.Google Scholar
19. Smith, H. W. and Weldon, M. D. 1940. A comparison of some methods for the determination of soil organic matter. Soil Sci. Soc. Am., Proc. 5:177–182.CrossRefGoogle Scholar
20. Stevenson, F. J. 1972. Organic matter interactions involving herbicides in soil. J. Environ. Qual. 1:333–343.Google Scholar
21. Talbert, R. E. and Fletchall, O. H. 1965. The adsorption of some s-triazines in soils. Weeds 13:46–52.Google Scholar
22. Weber, J. B. 1966. Molecular structure and pH effects on the adsorption of 13 s-triazine compounds on montmorillonite clay. Am., Mineral. 51:1657–1670.Google Scholar
23. Weber, J. B. 1970. Mechanisms of adsorption of s-triazines by clay colloids and factors affecting plant availability. Residue Rev. 32:93–130.Google Scholar
24. Weber, J. B. and Weed, S. B. 1974. Effects of soil on the biological activity of pesticides. Pages 223–256 in Guenzi, W. D., ed. Pesticides in Soil and Water. Soil Sci. Soc. Am., Inc., Madison, Wisconsin.Google Scholar
25. Weber, J. B., Weed, S. B., and Ward, T. M. 1969. Adsorption of s-triazines by soil organic matter. Weed Sci. 17:417–421.Google Scholar