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Behavior of Pyrazon in Soil

Published online by Cambridge University Press:  12 June 2017

R. Frank  and
C. M. Switzer
R. Frank
Affiliation:
Provincial Pesticide Residue Testing Laboratory, Ontario Department of Agriculture and Food, Guelph, Ontario
C. M. Switzer
Affiliation:
Department of Botany, University of Guelph, Guelph, Ontario
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Abstract

The disappearance of 5-amino-4-chloro-2-phenyl-3(2H)-pyridazinone (pyrazon) from soil was studied using Brassica species for bioassay and the spectrophotometer and chromogenic reagents for chemical determination. Loss of pyrazon from soil appeared to be an exponential function of time characteristic of the activity of soil microorganisms. On the other hand, non-biological degradation appeared negligible. Leaching of pyrazon appeared to be insignificant or minor. The greater part of the herbicide remained in the top 3 inches of soil.

Type
Research Article
Information
Weed Science , Volume 17 , Issue 3 , July 1969 , pp. 323 - 326
Copyright
Copyright © 1969 Weed Science Society of America 

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References

Literature Cited

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