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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
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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 

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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