Which category do calcium, magnesium, and sulphur fall under in plant nutrition?

Calcium, magnesium, and sulfur are classified as secondary elements in plant nutrition. These elements are essential for plant growth and development but are needed in smaller quantities compared to the primary macronutrients, which include nitrogen, phosphorus, and potassium.

Secondary elements play various vital roles in plant health. For instance, calcium is crucial for cell wall structure and stability, magnesium is a central component of chlorophyll and is important for photosynthesis, while sulfur is part of amino acids and vitamins. While plants require these secondary elements in smaller amounts than primary macronutrients, their presence is still critical for optimal growth and functioning.

Understanding the classification helps in managing soil nutrients effectively, ensuring that plants receive adequate nutrition for healthy growth.