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A Rapid Procedure to Evaluate the Effect of Pesticides on Nitrification

Published online by Cambridge University Press:  12 June 2017

R. P. Thorneburg  and
J. A. Tweedy
R. P. Thorneburg
Affiliation:
Dep. of Plant Industries, Southern Illinois University, Carbondale, IL 62901
J. A. Tweedy
Affiliation:
Dep. of Plant Industries, Southern Illinois University, Carbondale, IL 62901
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Abstract

A laboratory procedure for evaluating the effect of pesticides on nitrification in soil proved to be simple to perform, reproducible, and offers a procedure for rapid screening of a large number of chemicals in a short period. The recovery of added nitrate by extracting with distilled water was essentially 100% complete. The conversion of added ammonium to nitrate by the soil microorganisms was nearly complete after the 2-week incubation period. Nitrification in soil treated with several different herbicides and insecticides was determined by our procedure. A nitrification inhibitor, N-Serve3 (2-chloro-6-trichloromethyl pyridine) was included as a standard. None of the herbicides or insecticides inhibited nitrification and the N-Serve completely inhibited nitrification during the 2-week incubation.

Type
Research Article
Information
Weed Science , Volume 21 , Issue 5 , September 1973 , pp. 397 - 399
Copyright
Copyright © 1973 Weed Science Society of America 

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References

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