NPK on a fertilizer package stands for nitrogen, phosphorus, and potassium, the three nutrients that compose complete fertilizers.
Nitrogen, phosphorus and potassium, or NPK, are the “Big 3” primary nutrients in commercial fertilizers. Each of these fundamental nutrients plays a key role in plant nutrition. Nitrogen is considered to be the most important nutrient, and plants absorb more nitrogen than any other element.
Usage of NPK Fertilizers:
NPK Fertilizers promote flower and fruit production and are vital for maintaining growth and helping plants resist disease. It’s used in the process of building starches and sugars so is needed in vegetables and fruits.
Nitrogen (N2), Phosphorus (P4) and Potassium (K)
Nitrogen, phosphorus and potassium, or NPK