The early May flood triggered an early outbreak of fungus.  We are seeing everything from melting out fungus to brown patch.  If you are on “preventative disease control”, know that we are applying a curative rate of fungicide which will stop any fungus already present and prevent it from returning for 21-28 days.  This product can enter through leaves or the roots, so rainfall after a fungicide app will not reduce its effectiveness.  It takes about 10 days for turf to grow out of disease symptoms after a fungicide treatment.