As I look at both county wheat crops that have been planted fields are looking thin and many fields do not have optimum tillers. Fertilizer with optimum tillers needed to be 30 pounds or more. Wheat fields with less tillers need more fertilizer 50 to 70 lbs put on in January or February. Many of the fields I have observed have poor stands and gaps with not plants at all.
In some cases if the gaps are not to bad wheat can fill in but in areas that are not filled in a decision needs to be made on keeping the field or leave it as cover until you plant a spring crop. I have seen purpling in wheat which could be nutrient issues but also can be freeze damage if the temperatures have been very warm and broke dormancy but in most cases the growing point may not be that far along. It has been a wet year wheat does not like wet feet. You may want to scout fields in the next month or so to see what types of diseases are developing. With thin stands you will have weed issues such as henbit, chickweed and other broadleaves. Wheat this year was planted late, heavy rains through out the winter, and emergence issues with thin stands. Wheat is a tuff crop but like anything else it has its limitations.