The macro-nutrient provided by inorganic fertilization are:

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Bihar CET B.Ed Official Paper (Held On: 25 Jun, 2024)
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  1. Carbon, Iron, Boron
  2. Carbon, Nitrogen, Phosphorous
  3. Nitrogen, Phosphorous, Potassium
  4. Magnesium, Zinc, Iron

Answer (Detailed Solution Below)

Option 3 : Nitrogen, Phosphorous, Potassium
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The correct answer is Nitrogen, Phosphorous, Potassium.

Key Points

  • Nitrogen (N): Promotes leaf growth and forms proteins and chlorophyll.
  • Phosphorous (P): Aids in the development of roots, flowers, seeds, and fruit.
  • Potassium (K): Enhances overall plant health, improves drought resistance, and boosts disease resistance.
  • These three nutrients are commonly referred to as macronutrients and are crucial for plant growth and development.
  • Inorganic fertilizers typically contain these nutrients in various formulations to enhance soil fertility.

Additional Information

  • Macronutrients vs. Micronutrients:
    • Macronutrients are required in larger quantities compared to micronutrients, which are needed in trace amounts.
    • Micronutrients include elements such as iron, manganese, zinc, copper, molybdenum, and boron.
  • Role of Nitrogen:
    • Essential for the synthesis of amino acids and proteins.
    • Vital for photosynthesis as it is a component of chlorophyll.
  • Role of Phosphorous:
    • Crucial for energy transfer in plants through ATP (adenosine triphosphate).
    • Important for root development and flowering.
  • Role of Potassium:
    • Regulates water uptake and loss in plants.
    • Activates enzymes involved in photosynthesis and respiration.
  • Inorganic Fertilizers:
    • Common types include ammonium nitrate, superphosphate, and potassium chloride.
    • They are synthesized through chemical processes and provide readily available nutrients to plants.
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