Wild Proso Millet (Panicum miliaceum) Control in Processing Peas (Pisum sativum) and Soybeans (Glycine max)

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Abstract
Field studies in 1978 and 1979 evaluated the effectiveness of single and combination herbicide treatments in processing peas (Pisum sativum L.) and soybeans [Glycine max (L.) Merr.] for the control of wild proso millet (Panicum miliaceum L.). Eight treatments that included dinitroaniline herbicides controlled wild proso millet adequately through the entire growing season of the early-planted peas (approximately 60 days). Wild proso millet emergence and growth in untreated peas was suppressed by the early emergence, rapid growth, and high plant density of the drill-planted crop. Trifluralin (α,α,α-trifluoro-2,6-dinitro-N,N-dipropyl-p-toluidine) at 0.8 kg/ha stunted pea growth and was the only treatment that reduced yields significantly. No herbicide treatment evaluated in soybeans controlled wild proso millet adequately for the entire growing season without reducing soybean growth and yield. Treatments containing dinitroaniline herbicides, which controlled wild proso millet in peas and resulted in good yield, did not perform similarly in soybeans.