Sprayed N-Ext RGS @ 6oz/M rate, to help roots grow deeper before the summer stress.
I've noticed in years past that latter half of May in my area when air temps and humidity are consistently higher is when fungal disease symptoms (mycelium
and/or dark areas
) begin to become noticeable. Last year during spring I applied .79#N mostly synthetic fast/slow release blend. This spring I applied .62#N some synthetic but mostly organic majority slow release. Also last year HOC was 3.50", this year so far it's 3.25". I'll go a little lower HOC if disease starts to appear.
To treat the fungal disease I lower HOC to allow more airflow, bag mow to collect disease blades, then spray neem oil on the target area to smother the disease pathogen. Some years ago I did synthetic granular fungicide preventative/corrective applications spending $$$ and alternating MOA for several months, still had disease and the lawn looked anemic. Maybe a foliar fungicide might of been a better approach.