Which nutrient is NOT one of the three represented in a fertilizer analysis?

In fertilizer analysis, the three primary nutrients represented are nitrogen, phosphorus, and potassium, often referred to as N-P-K. These nutrients are crucial for plant growth and health.

Nitrogen is essential for leaf growth and overall plant vigor. Phosphorus plays a key role in energy transfer and root development, while potassium contributes to overall plant health and disease resistance.

Calcium, while important for plant development and cell wall structure, is not classified among these three primary nutrients. It is often considered a secondary nutrient. Essentially, the designation of primary nutrients is based on their importance and the quantities typically required by plants, with nitrogen, phosphorus, and potassium ranking at the top. This understanding helps in making informed decisions regarding fertilization and plant nutrition.