NPK Fertilizers Market Trends to Watch This Decade The NPK fertilizer market in the USA is a key driver of agricultural productivity, providing crops with essential nutrients for healthy growth. NPK fertilizers combine Nitrogen (N), Phosphorus (P), and Potassium (K) in varying ratios to meet soil and crop needs. Among these, NPK 15-15-15 is highly favored for its balanced formulation, suitable for a wide range of crops such...