Pythium on poa

Dr. John Kaminski, Pennsylvania State University, recently observed late season pythium attacking Poa annua greens in the northeast in August, 2016. The disease can look like late season summer patch - if you have had poor success with control of summer patch, send a sample for diagnosis (turf diagnostic laboratories or contact kaminski@psu.edu prior to shipping to: Kaminski Lab, Penn State, 109 Tyson Building, University Park, PA 16802).

If you have depended upon phosphites for your entire pythium management program,…