Citrus weed control by monuron: Experiments with urea herbicides for weed control in citrus orchards encouraging but use of the chemicals is restricted
California Agriculture 11(2):11-12.
Published February 01, 1957
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The urea herbicide, monuron—3-(p-chlorophenyl)-l, 1-dimethylurea—formerly known as CMU, was registered with a federal residue tolerence of 1 ppm—one part per million—for limited use in Valencia and navel orange orchards during the fall of 1955.