Tag Archives: clubbed roots

“Clubbed” Roots on St. Augustine

We have had several turfgrass samples in the Extension office that showed signs of clubbed rooting. Rather than a normal tapered root the roots are short and swollen on the ends, much like a club in their shape. This condition was traced back to misuse of an herbicide in the dinotroaniline (DNA) herbicide family. Examples include prodiamine (Barricade), benefin (Balan), pendimethalin (Pendulum, Pre-M, Weedgrass Control), trifluralin (in Snapshot), and oryzalin (Surflan). Dithiopyr (Dimension) is another ingredient that is from a different herbicide family but works in a similar… Read More →