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Adsorption, Mobility, and Efficacy of Metribuzin as Influenced by Soil Properties

Published online by Cambridge University Press:  12 June 2017

C. John Peter  and
Jerome B. Weber
C. John Peter
Affiliation:
E. I. duPont de Nemours and Co., Wilmington, DE 19898
Jerome B. Weber
Affiliation:
Crop Sci. Dep., North Carolina State Univ., Raleigh, NC 27695–7627
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Abstract

The effect of various soil parameters on metribuzin [4-amino-6-(1,1-dimethylethyl)-3-(methylthio)-1,2,4-triazin-5(4H)-one] efficacy was studied on seven soils and metribuzin adsorption was investigated in nine soils. Soil organic-matter and clay contents were correlated with metribuzin activity. Specific surface area, as measured by ethylene glycol monoethyl ether (EGME) was highly correlated with metribuzin activity. Soil organic-matter content and EGME surface area measurements were also highly correlated with metribuzin adsorption in soils. Since metribuzin is highly water soluble (water solubility greater than 1000 ppm), it was probably adsorbed at the hydrophilic sites on the soil surfaces that were measured by EGME. Metribuzin was much more mobile than atrazine [6-chloro-N-ethyl-N′-(1-methylethyl)-1,3,5-triazine-2,4-diamine] in a leaching study.

Keywords

Specific surface arealeachingatrazine
Type
Soil, Air, and Water
Information
Weed Science , Volume 33 , Issue 6 , November 1985 , pp. 868 - 873
Copyright
Copyright © 1985 by the Weed Science Society of America 

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