Need a plan to control waterhemp?
The weed specialists offer a chart with water hemp control 30 and 60 days after treatment with a variety of soil-applied residual herbicides. Those include Authority, Valor, IntRRO, Outlook, Dual II Magnum, Linex, Sencor, Prowl H2O, Atrazine, and Pursuit, applied at the recommended rates. The percent of waterhemp control ranges from 6 percent to 95 percent 30 days after treatment, and 3 percent to 91 percent 60 days after treatment.
With the growing resistance of waterhemp and some other weed species to glyphosate, the use of a soil-applied residual herbicide become an important tool for protecting soybean yields. A five step program can help by focusing on the herbicide selection, timing and rate of application, amount of soil moisture and being aware of potential crop injury.