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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

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