Quicksilver and Bensumec again

Application of Bensumec (bensulide) followed by QuickSilver (carfentrazone) has again been reported to cause severe turf damage on bentgrass. The interacton was observed this fall in northern California. A similar interaction was noted in 2009 (see this PACE Update). In 2009, the recommendation was to wait at least 30 days after making a bensulide application before making an application of carfentrazone. In the current situation, illustrated in the photograph, Quicksilver was applied 54 days after the Bensumec and still, a…