What are treatment options for this disease?
If this is a first time occurence proper irrigation and fertilization should remedy the problem. If this is a recurring problem then a chemical will need to be applied.
For the homeowner Ferti-lome Liquid Systemic Fungicide is a good option for treatment. It will take a couple of applications seperated by 14 days. Always read the label through and follow directions carefull to safegaurd yourself and the plants your treating.