Correct option is D
✅ (d) Calcium ammonium nitrate (CAN): • CAN is commonly referred to as ‘Sona’ fertilizer due to its high-quality nitrogen content and superior granulation. • It contains about 26% nitrogen and is a quick-release fertilizer. • Preferred in India for its non-volatile nature compared to urea.
❌ (a) Ammonium nitrate: • Explosive in nature; not popularly referred to as "Sona".
❌ (b) Urea: • Most widely used nitrogen fertilizer, but not called "Sona".
❌ (c) Diammonium phosphate (DAP): • A phosphatic fertilizer, not referred to by this name.