Hostname: page-component-586b7cd67f-dsjbd Total loading time: 0 Render date: 2024-11-24T13:33:19.513Z Has data issue: false hasContentIssue false
  • English
  • Français

Relationship between Soil-Applied Pyrazon and Content in Soil Solution

Published online by Cambridge University Press:  12 June 2017

J. C. Streibig
J. C. Streibig*
Affiliation:
Dep. Crop Husbandry and Plant Breeding, Royal Veterinary & Agric. Univ., 2630 Taastrup, Denmark
Get access Rights & Permissions [Opens in a new window]

Abstract

The relationship between pyrazon [5-amino-4-chloro-2-phenyl-3(2H)-pyridazinone] in soil solution and dosage was examined in two soils under slurry equilibrium conditions and at field water capacity. In a sandy soil, the partition coefficient, calculated from a regression analysis of soil water content on dosage applied, was similar under slurry conditions and at field water capacity, but in a loamy sand, high in organic matter, the partition coefficient was somewhat higher at field water capacity than the estimated 4.71 measured in a great excess of water. In the sandy soil, neither the partition coefficients under slurry conditions nor at field water capacity were significantly different from Freundlich's k. Under slurry conditions in the loamy sand this difference was barely significant, whereas at field water capacity the estimated partition coefficient was significantly higher than Freundlich's k. Soil water sampling at field water capacity a fortnight after the start of the experiment showed a considerable increase in partition coefficient compared with the first sampling after 2 days, and the relationship in a sandy soil showed a slight non-linear trend, but that of the loamy sand still appeared to be linear. A desorption experiment indicated that the recovery of soil-adsorbed pyrazon was almost complete.

Keywords

Soil adsorptiondesorption
Type
Research Article
Information
Weed Science , Volume 30 , Issue 5 , September 1982 , pp. 527 - 531
Copyright
Copyright © 1982 by the Weed Science Society of America 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Literature Cited

1. Draper, N. R. and Smith, H. 1981. Applied Regression Analyses, Second Edition. John Wiley & Sons, Inc., New York. 709 pp.Google Scholar
2. Freed, V. H. and Haque, R. 1973. Adsorption, movement, and distribution of pesticides in soils. Pages 441–459 in Van Valkenburg, W., ed. Pesticide Formulations, Marcel Dekker, New York.Google Scholar
3. Fusi, P., Cecconi, S., Franci, M., and Vazzana, C. 1976. Adsorption et desorption de la pyrazone par quelqes colloides organiques et mineréaux. Weed Res. 16:101–109.Google Scholar
4. Green, R. E. and Obien, S. R. 1969. Herbicide equilibrium in soils in relation to soil water content. Weed Sci. 17:514–519.Google Scholar
5. Hance, R. J. 1967. The speed of attainment of sorption equilibria in some systems involving herbicides. Weed Res. 7:29–36.Google Scholar
6. Hance, R. J. 1977. The adsorption of atratone and monuron by soils at different water contents. Weed Res. 17:197–201.CrossRefGoogle Scholar
7. Hance, R. J. and Embling, S. J. 1979. Effect of soil water content at the time of application on herbicide content in soil solution extracted in a pressure membrane apparatus. Weed Res. 19:201–205.Google Scholar
8. Hartley, G. S. 1976. Physical behaviour in the soil. Pages 1–28 in Andus, L. J., ed. Herbicides: Physiology, Biochemistry, Ecology 2nd Ed. Vol. 2, Academic Press, London.Google Scholar
9. Streibig, J. C. 1979. Measured and predicted concentration of s-triazine in soil water. Kgl. Vet.-og Landbohøjsk. Årsskr. 1980:47–56.Google Scholar
10. Streibig, J. C. 1981. Phytotoxicity and adsorption of TCA and chloridazon in nine Danish soils. Acta. Agric. Scand. 30:364–368.Google Scholar
11. Talbert, R. E. and Fletchall, D. H. 1965. The adsorption of some s-triazines in soils. Weeds 13:46–52.CrossRefGoogle Scholar