Hostname: page-component-78c5997874-s2hrs Total loading time: 0 Render date: 2024-11-09T01:44:44.095Z Has data issue: false hasContentIssue false
  • English
  • Français

Effects of Soil pH and Moisture on the Direct Radioassay of Herbicides in Soil

Published online by Cambridge University Press:  12 June 2017

T.L. Lavy
T.L. Lavy*
Affiliation:
Dep. of Agron., Univ. of Nebraska, Lincoln, NE 68503
Get access Rights & Permissions [Opens in a new window]

Abstract

The addition of 1.5 ml water or 1.5 ml 0.1 N oxalic acid solution to 2 g soil samples containing 14C-labeled herbicides increased the 14C extraction efficiencies. The employment of a modified dioxane extracting-counting solution allowed the addition of 2 ml water without causing a liquid phase separation. Extraction of benzoic acid herbicides from soil was enhanced when 5 mg oxalic acid was added to 2 g soil or when soil was acidified to pH 4.1.

Type
Research Article
Information
Weed Science , Volume 23 , Issue 1 , January 1975 , pp. 49 - 52
Copyright
Copyright © 1975 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. Adams, R.S. Jr. 1966. Soxhlet extraction of simazine from Soils. Proc. Soil Sci. Soc. Amer. 30:689–693.Google Scholar
2. Chow, P.N., Burnside, O.C., Lavy, T.L., and Knoche, H.W. 1966. Absorption, translocation, and metabolism of silvex in prickly pear. Weeds 14:38–41.CrossRefGoogle Scholar
3. Edwards, C.A. 1966. Insecticide residues in soils. Residue Rev. 13:83–132.Google Scholar
4. Lavy, T.L., Messersmith, C.G., and Knoche, H.W. 1972. Direct liquid scintillation radioassay of 14 C-labeled herbicides in soil. Weeds 20:215–219.Google Scholar
5. Linscott, J.J., Burnside, O.C., and Lavy, T.L. 1969. Phytotoxicity and movement of amiben derivatives in soil. Weeds 17:170–174.Google Scholar
6. Mattson, A.M., Kahrs, R.A., and Murphy, R.T. 1970. Quantitative determination of triazine herbicides in soils by chemical analysis. Residue Rev. 32:371–390.Google Scholar
7. Obien, S.R. and Green, R.E. 1969. Degradation of atrazine in four Hawaiian soils. Weeds 17:509–513.Google Scholar
8. Roeth, F.W., Lavy, T.L., and Burnside, O.C. 1969. Atrazine degradation in two soil profiles. Weeds 17:202–205.Google Scholar
9. Talbert, R.E. and Fletchall, O.H. 1965. The adsorption of some s-triazines in soils. Weeds 13:46–52.Google Scholar
10. Talbert, R.E., Smith, D.R., and Frans, R.E. 1971. Volatilization, leaching and adsorption of prometryne in relation to selectivity in cotton. Weeds 19:6–10.Google Scholar
11. Wagner, G.H. and Chahal, K.S. 1966. Decomposition of carbon-14 labeled atrazine in soil samples from Sanborn field. Proc. Soil Sci. Soc. Amer. 30:752–754.CrossRefGoogle Scholar
12. Weed Science Society of America. 1970. Herbicide Handbook, 2nd ed. Humphrey Press Inc., Geneva, New York. 368 pp.Google Scholar