MP Board · Class 9 · Science · Improvement in Food ResourcesWhat are macro-nutrients and micro-nutrients in plant nutrition? Name two examples of each.

Macro-nutrients are essential elements required by plants in relatively large quantities for their growth, development, and physiological functions. Examples include nitrogen, phosphorus, potassium, calcium, magnesium, and sulphur. Micro-nutrients are essential plant nutrients required in very small amounts or trace quantities for specific metabolic activities. Examples include iron, manganese, boron, zinc, copper, molybdenum, and chlorine. Adequate supply of both nutrient types ensures healthy plant growth and optimum crop yield.