The key macronutrients Macronutrients are essential for plant growth and overall plant health. The major macronutrients are nitrogen (N), phosphorus (P) and potassium (K).
Major nutrients or macronutrients include nitrogen, phosphorus and potassium; secondary nutrients including calcium, magnesium and sulfur; and the micronutrients including boron, chloride, copper, iron, manganese, molybdenum, zinc and nickel. Phosphorus is one of the three macronutrients required for plant growth. It is needed for photosynthesis, which converts energy from the sun into food for plants. It is also necessary for strong root growth. A plant must have access to phosphorus to ensure a healthy growth cycle.
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