Question

The parameters of N use efficiency are
(A) Apparent N. recovery
(B) Agronomic efficiency
(C) Production efficiency
(D) Physiological N efficiency
Choose the correct answer from the options given below:

• A. (A), (B) and (D) only.
• B. (A), (B) and (C) only.
• C. (A), (B), (C) and (D).
• D. (B), (C) and (D) only.

Hint:

Nitrogen use efficiency includes multiple measures like recovery, yield increase, and physiological response.

Answer 1

The Correct Option is C

All four parameters — Apparent N recovery, Agronomic efficiency, Production efficiency, and Physiological N efficiency — are recognized indicators to evaluate nitrogen use efficiency (NUE) in crop systems. Each reflects a different aspect of uptake, utilization, and yield benefit.