Question:
Which of the following is a slow release nitrogenous fertilizer?
Which of the following is a slow release nitrogenous fertilizer?
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Slow release N fertilizers:
Urea formaldehyde, IBDU, Neem coated urea.
Controlled release: Sulphur coated urea, lac coated urea.
Urea formaldehyde, IBDU, Neem coated urea.
Controlled release: Sulphur coated urea, lac coated urea.
Updated On: Aug 18, 2026
- Encapsulated calcium carbide
- Lac coated urea
- Urea formaldehyde
- Sulphur coated urea
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Verified By Collegedunia
The Correct Option is C
Solution and Explanation
Step 1: Understanding the Concept:
Slow release fertilizers release nutrients gradually.
Different types of slow release N fertilizers exist.
Step 2: Key Formula or Approach:
No specific formula.
Need to know the types of slow release fertilizers.
Step 3: Detailed Explanation:
Urea formaldehyde is a slow release nitrogenous fertilizer.
It releases N slowly through microbial action.
Sulphur coated urea is a controlled release fertilizer.
Lac coated urea is also a controlled release type.
Encapsulated calcium carbide is a nitrification inhibitor.
Thus, urea formaldehyde is a slow release fertilizer.
Step 4: Final Answer:
Urea formaldehyde is a slow release nitrogenous fertilizer.
Hence, the correct option is (C).
Slow release fertilizers release nutrients gradually.
Different types of slow release N fertilizers exist.
Step 2: Key Formula or Approach:
No specific formula.
Need to know the types of slow release fertilizers.
Step 3: Detailed Explanation:
Urea formaldehyde is a slow release nitrogenous fertilizer.
It releases N slowly through microbial action.
Sulphur coated urea is a controlled release fertilizer.
Lac coated urea is also a controlled release type.
Encapsulated calcium carbide is a nitrification inhibitor.
Thus, urea formaldehyde is a slow release fertilizer.
Step 4: Final Answer:
Urea formaldehyde is a slow release nitrogenous fertilizer.
Hence, the correct option is (C).
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