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Dissipation and Leaching of Monuron, Simazine, and Atrazine in Nebraska Soils

Published online by Cambridge University Press:  12 June 2017

O. C. Burnside ,
C. R. Fenster  and
G. A. Wicks
O. C. Burnside
Affiliation:
Dept. of Agronomy at Lincoln, University of Nebraska
C. R. Fenster
Affiliation:
Box Butte Expt. Sta. at Alliance, University of Nebraska
G. A. Wicks
Affiliation:
North Platte Expt. Sta. at North Platte, University of Nebraska
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Abstract

The fate of 3-(p-chlorophenyl)-1,1-dimethylurea (monuron), 2-chloro-4,6-bis(ethylamino)-s-triazine (simazine), and 2-chloro-4-ethylamino-6-isopropylamino-s-triazine (atrazine) in Wymore silty clay loam soil at Lincoln, Bridgeport loam soil at North Platte, and Rosebud loam soil at Alliance, Nebraska, was followed during a 16-month period. Oats grown for 40 days in the field as a bioassay crop showed that simazine and atrazine were less phytotoxic in the finer textured soil where the rainfall was highest. Soybean bioassays in soil from different horizons showed a higher concentration of monuron remaining in the 0- to 3-inch soil horizons than of simazine or atrazine. There was a marked decrease of monuron phytotoxicity in the 3- to 18-inch soil layer 16 months after as compared to 4 months after the herbicide application. Atrazine showed the greatest leaching of the three herbicides in this study.

Type
Research Article
Information
Weeds , Volume 11 , Issue 3 , July 1963 , pp. 209 - 213
Copyright
Copyright © 1963 Weed Science Society of America 

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References

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