Question

With reference to agricultural crop, which of the following are considered as critical elements?

• A. Mg, Fe, Zn
• B. C, H, O
• C. N, P, K
• D. Mn, Cl, Ca

Hint:

{NPK = primary nutrients for crops}.

Answer 1

The Correct Option is C

Step 1: Understanding critical elements.
Critical elements are nutrients required by crops in large amounts and are often deficient in agricultural soils.

Step 2: Identifying primary macronutrients.
Nitrogen (N), Phosphorus (P), and Potassium (K) are primary macronutrients essential for plant growth and yield.

Step 3: Conclusion.
Thus, the critical elements are N, P, and K.