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Degradation and Leaching of Methazole in Soil

Published online by Cambridge University Press:  12 June 2017

F.E. Brockman  and
W.B. Duke
F.E. Brockman
Affiliation:
Dep. Agron., Cornell Univ., Ithaca, NY 14853
W.B. Duke
Affiliation:
Dep. Agron., Cornell Univ., Ithaca, NY 14853
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Abstract

The degradation and leaching of methazole [2-(3,4-dichlorophenyl)-4-methyl-1,2,4-oxadiazolidine-3,5-dione] and metabolites in Elmwood sandy loam soil over time in response to average spring environmental conditions was studied by using soil columns placed on a rainfall simulator in an environmental growth chamber. Methazole was degraded to 3-(3,4-dichlorophenyl)-1-methylurea (DCPMU) and 3-(3,4-dichlorophenyl) urea (DCPU) over a 6-week period following methazole application, during which the soil columns received simulated rainfall of 1.27 cm every fourth day. Methazole level decreased to 27% of the original amount while DCPMU and DCPU levels increased to 53% and 1%, respectively. Of the total radioactivity remaining in the soil columns after 44 days and after 14 cm rainfall, approximately 80% remained above a depth of 6.35 mm.

Type
Research Article
Information
Weed Science , Volume 25 , Issue 4 , July 1977 , pp. 304 - 308
Copyright
Copyright © 1977 by the Weed Science Society of America 

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