RE: poor soil foodplot question?
I also have no experience in Kansas, but the first thing I would do is call the extension office of KSU. Talk with an Ag Extension Agent and get their help. Also contact the Wildlife Dept at KSU, Kansas Dept of Wildlife and the Soil Conservation Service Office in your area.
They will be able to help you set up a food plot program as well as a habitat improvement plan that will help you manage the native plants that benefit wildlife. I find that native species management in addition to food plots gives my management programs something to fall back on should I have a bad year for the food plots. I also can do several acres of native species for the cost of 1 acre of food plots.
Just my thoughts...hope they help.