A name for three primary soil nutrients that are often in short supply

Essential Elements for Plant Growth

From a management perspective only, the primary nutrients are N, P, and K, because they are most often limiting from a crop production standpoint.

Soil is a major source of nutrients needed by plants for growth. The three main nutrients are nitrogen (N), phosphorus (P) and potassium (K). Together they make up the trio known as NPK. Other important nutrients are calcium, magnesium and sulfur.

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