Sequential applications of Trimmit and QuickSilver

In this December's PACE Highlights, we reported the possibility that sequential applications of paclobutrazole (Trimmit) and carfentrazone (QuickSilver) might have the ability to cause damage to bentgrass. Though the damage was reversible (in 6 - 14 days), it was significant. This warning was based on two reports of damage in North Carolina and Tennessee that Dr. Fred Yelverton of North Carolina State University passed on to us. Upon further investigation, however, Fred reports that the situation may be more complicated…