What types of fertilizers are available in the market ?
Three types of fertilizers are available in the market. They are straight fertilizers, Complex fertilizers, and Mixed Fertilizers. Straight Fertilizers supply single plant nutrient either nitrogen (N), or phosphorus (P), or potassium (K). Example: Urea supplies 46% N; Super phosphate provides 7% P or 16% P2O5. Complex Fertilizers supply more than one plant nutrient. Example: Di-Ammonium Phosphate (DAP) contains 18% N and 20% P (46% P2O5). Mixed Fertilizers are physical mixture of two or more straight and/or complex fertilizers to supply particular combination of plant nutrients. Example: one can buy DAP and Muriate of Potash and mix them in a ratio to get a fertilizer mixture containing a grade of 12-32-16 of N, P2O5, and K2O.
