Gil Gullickson The U of A weed scientists report that some applicators state that they are experiencing extreme amounts of foaming from the tank. Picture sent from an Arkansas applicator in which a tank-mixture that included Engenia, Roundup PowerMax, and Sentris popped the lid off of the sprayer inductor tank and foamed out. A few reports indicate enough pressure being generated to pop the lids off their spray tank, specifically inductor tanks. VRA Background Volatility Reducing Agents (VRAs) are 2021 updates to the labels of approved dicamba products for use in Xtend and XtendFlex soybeans. VRAs must now be added to the tank when spraying XtendiMax, Engenia, or Tavium.