Most soil fertility books are ag-related. James Beard's "Turfgrass Science and Culture" 1972, is the most complete textbook on turfgrass and has chapters on soil fertility. 672 pages. Fertility is discussed on pages 408 to 465. Look for a used copy, or drop by your library.
For a quick read try Trey Rogers, "Lawn Geek" Pp 148 to 166, 2007. Teaches turf science at Michigan State.