The constant rain and saturated soils of May presented the ideal condtions for the Annual Bluegrass in the rough to be infected with the Summer Patch pathogen. This pathogen colonizes the root system, impacting the uptake of water and nutrients. The symptoms typically observed at HP include a yellowing, sunken appearance with a steady decline in turf quality. This year we made a fungicide application to about 70 percent of the rough, however this may not stop be enough to stop the decline of the Annual Bluegrass. Long-term, our goal is to reduce the amount of Annual Bluegrass in the rough, improving drainage and the addition of turfgrass types that are resistant to these fungi.
Symptoms of Summer Patch in the rough
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