Hostname: page-component-8448b6f56d-wq2xx Total loading time: 0 Render date: 2024-04-23T12:54:39.922Z Has data issue: false hasContentIssue false
  • English
  • Français

Herbicide Equilibrium in Soils in Relation to Soil Water Content

Published online by Cambridge University Press:  12 June 2017

R. E. Green  and
S. R. Obien
R. E. Green
Affiliation:
Department of Agronomy and Soil Science, University of Hawaii, Honolulu, Hawaii
S. R. Obien
Affiliation:
Department of Agronomy and Soil Science, University of Hawaii, Honolulu, Hawaii
Get access Rights & Permissions [Opens in a new window]

Abstract

The concept of herbicide partition into adsorbed and solution phases in the soil was utilized to predict the effect of soil water content on the concentration of herbicide in solution. Calculated predictions based on measured partition coefficients and water contents were tested experimentally by equilibrating 2-chloro-4-(ethylamino)-6-(isopropylamino)-s-triazine (atrazine) with soil from three horizons of a latosolic soil at four water contents (45 to 60%). The effects of adsorption and water content were predicted with reasonable accuracy when only that water held at tensions less than 15 bars was considered available for equilibration with the applied herbicide. Only on low adsorption soils will water content variations alter significantly herbicide concentration in the soil solution. The principal effect of soil water content on herbicide phytotoxicity probably is associated with herbicide transport, which is more sensitive to changes in water content than is the concentration of herbicide in soil solution.

Type
Research Article
Information
Weed Science , Volume 17 , Issue 4 , October 1969 , pp. 514 - 519
Copyright
Copyright © 1969 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. Barber, S. A. 1962. A diffusion and mass-flow concept of soil nutrient availability. Soil Sci. 93:39–49.CrossRefGoogle Scholar
2. Bailey, G. W. and White, J. L. 1964. Review of adsorption and desorption of organic pesticides by soil colloids with implications concerning pesticide bioactivity. J. Agr. Food Chem. 12:324–332.Google Scholar
3. Gardner, W. R. 1960. Dynamic aspects of water availability to plants. Soil Sci. 89:63–73.CrossRefGoogle Scholar
4. Gardner, W. R. and Ehlig, C. F. 1963. The influence of soil water on transpiration by plants. J. Geophys. Res. 68:5719–5724.Google Scholar
5. Green, R. E., Yamane, V. K., and Obien, S. R. 1968. Transport of atrazine in a latosolic soil in relation to adsorption, degradation, and soil water variables. Trans. 9th Int. Soil Sci. Congr. 1:195–204.Google Scholar
6. Grover, R. 1965. Influence of organic matter, texture, and available water on the toxicity of simazine in soils. Weeds 14:148–151.Google Scholar
7. Geissbühler, H., Haselbach, C., Aebi, H., and Ebuer, L. 1963. The fate of N'-(4-chlorophenoxy)-phenyl-NN-dimethylurea(C-1983) in soils and plants. Weed Res. 3:181–194.Google Scholar
8. Hartley, G. S. 1964. Herbicide behavior in the soil. 1. Physical factors and action through the soil. pp. 111–161. In Audus, L. J. (ed.) The Physiology and Biochemistry of Herbicides. Academic Press, New York.Google Scholar
9. Hilton, H. W. and Yuen, Q. H. 1963. Adsorption of several pre-emergence herbicides by Hawaiian sugarcane soils. J. Agr. Food Chem. 11:230–234.Google Scholar
10. Lambert, S. M. 1966. The influence of soil-moisture content on herbicidal response. Weeds 14:273–275.Google Scholar
11. Lambert, S. M., Porter, P. E., and Schieferstein, R. H. 1965. Movement and sorption of chemicals applied to the soils. Weeds 13:185–190.Google Scholar
12. Lavy, T. L. 1968. Micromovement mechanisms of s-triazines in soil. Soil Sci. Soc. Amer. Proc. 32:377–380.Google Scholar
13. Obien, S. R., Suehisa, R. H., and Younge, O. R. 1966. The effects of soil factors on the phytotoxicity of neburon to oats. Weeds 14:105–109.CrossRefGoogle Scholar
14. Peters, D. B. and Russell, M. B. 1960. Ion uptake by corn seedlings as affected by temperature, ion concentration, moisture tension and moisture content. Trans. 7th Int. Soil Sci. Congr. IV:457–465.Google Scholar
15. Rodgers, E. G. 1967. Leaching of seven s-triazine herbicides. Weed Sci. 16:117–120.Google Scholar
16. Sheets, T. J. 1961. Uptake and distribution of simazine by oat and cotton seedlings. Weeds 9:1–13.CrossRefGoogle Scholar
17. Upchurch, R. P. 1957. The influence of soil-moisture content on the response of cotton to herbicides. Weeds 5:112–120.Google Scholar
18. Watanabe, F. S., Olsen, S. R., and Danielson, R. E. 1960. Phosphorus availability as related to soil moisture. Trans. 7th Int. Soil Sci. Congr. IV:450–456.Google Scholar
19. Wagner, G. H. 1962. Use of porous ceramic cups to sample soil water within the profile. Soil Sci. 94:379–386.Google Scholar