Difference Between DAP and NPK Fertilizer | Compare the ...
Aug 21, 2018· The key difference between DAP and NPK fertilizer is that the DAP fertilizer has no potassium whereas the NPK fertilizer contains potassium as well.. The term DAP refers to diammonium phosphate, and it is a phosphate fertilizer; the world''s most common phosphorus, we produce this fertilizer using two important constituents in the fertilizer industry; phosphoric acid and .