Summertime summer patch

Summer patch doesn't break-through fungicide programs at every location, but there are situations where summertime fungicide applications can't keep up with summer patch control expecations. The usual cause of reduced fungicide control is higher than normal temperature coupled with the attempt to stretch out fungicide applications to once every four weeks by using the high rates of QoI or benzimidazole fungicides. This works fine if conditions are not too stressful and the summer patch doesn't get punchy. In most situations,…