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This article in JEQ

  1. Vol. 4 No. 3, p. 399-402
     
    Received: Nov 15, 1974


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doi:10.2134/jeq1975.00472425000400030025x

Losses of Diuron, Linuron, Fenac, and Trifluralin in Surface Drainage Water1

  1. G. H. Willis2,
  2. R. L. Rogers3 and
  3. L. M. Southwick2

Abstract

Abstract

Diruon [3-(3,4-dichlorophenyl)-1,1-dimethylurea], linuron [3-(3,4-dichlorophenyl)-1-methoxy-1-methylurea], fenac [(2,3,6-trichlorophenyl)acetic acid], and trifluralin (α,α,α-trifluoro-2,6-dinitro- N,N-dipropyl-p-toluidine) were applied to plots designed for sampling surface runoff. Over a 3-year period, highest concentrations in runoff were usually associated with rainstorms that occurred soon after application. Maximum seasonal losses were < 0.12, 0.30, 2.90, and 0.05% of the applied diuron, linuron, fenac, and trifluralin, respectively. The data suggest that with proper use on agricultural land in the lower Mississippi River Valley these herbicides pose little threat to adjacent aquatic areas.

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