1975•Unpublished venueRequires access
Herbicides and delayed planting for johnsongrass control in soybeans
Fred W. Roeth
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Abstract
In 2 years' trials, dalapon at 6 lb/acre and glyphosate at 1 lb/acre sprayed on the foliage of johnsongrass (Sorghum halepense) gave good suppression of rhizomes and around 70% control resulted when this treatment was followed several days later by trifluralin incorporated by double discing (tested at rates in the range 0.75-1.5 lb/acre) against S. halepense seedling growth. Soybeans sown shortly after this combined treatment suffered no ill effects, either through the herbicides themselves or because of the necessary delay to allow for the foliar treatment, and the yield appeared to be increased. See WA 24, 1720