Cultural control of summer patch

PACE Turf promotes the use of manganese for suppression of ectotrophic root infecting fungi such as take all patch for several years now. Now, data from Dr. John Inguagiato of the University of Connecticut suggests that manganese can also suppress a related disease — summer patch.

Inguagiato tested applications of manganese sulfate 6.0 lbs/1000 sq ft (293 kg/ha) from May through September, and found that summer patch was decreased by more than 50%. We have suggested similar rates of 2.3…