I got my soil test back and it says no lime recommended which is a good thing I suppose. It also recommends 60-180 lbs of N for grains in one of my plots and 0 lbs P, 0 lbs K per acre. In the other plot it recommends 60-180 N, 80 lbs P, and 40 lbs K per acre. My question is what is the best mixture of fertilizer to get for this application? I know the numbers on the bag represents the percentage of each nutrient in the bag. Can you have a custom mixture made up?