Which one among the following fertilizers is a source of nitrogen?

Correct option is D

The correct answer is (d) Urea.
Explanation: Urea is a nitrogen-rich fertilizer, containing about 46% nitrogen, which is essential for plant growth. Nitrogen is a vital nutrient that promotes leaf and stem growth, and urea is one of the most commonly used nitrogen-based fertilizers in agriculture. When applied to the soil, urea undergoes hydrolysis, releasing ammonia, which then converts into a form that plants can absorb, promoting healthy vegetative growth.
Information Booster:
· Alternative Nitrogen Sources: Other fertilizers like ammonium nitrate and ammonium sulfate also provide nitrogen but with different compositions.
· Option (a) - Superphosphate: Primarily a source of phosphorus, not nitrogen.
· Option (b) - Potassium sulfate: Supplies potassium and sulfur, not nitrogen.
· Option (c) - Bone meal: A rich source of phosphorus and calcium, with minimal nitrogen.