This is a great time to evaluate your weed control and nitrogen programs. Identifying what weeds escaped will help you modify next seasons weed control program. Also, look for premature yellowing on lower leaves. Determine whether it's nitrogen or potassium defficency. Fall spreading potassium is a great idea! With all the rain this year chances are most fields may show some deficency symptoms.
Evaluating plant health is another important task. This picture shows one of my fields of 197-68STX that was sprayed with Headline AMP fungicide at R1. It worked!