So, if you spread 100# of Dap, you'll be adding 18 lbs of N
46# of P
0# of K
That would be a good amount of P - probably too much if you do so every year, but not enough N or K.
You'd need a soil test to do this really good, and a good guess of what type of yield you can hope for, and them buy a blended fertilizer that matches the N, P, & K to what your soil needs.