Question:
The Nitrogenous fertilizer suitable for application to slightly acidic soil
The Nitrogenous fertilizer suitable for application to slightly acidic soil
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Calcium Ammonium Nitrate (CAN) is often called "neutral fertilizer" or "Farmer's Nitrate" because the calcium carbonate content counteracts the acidifying effect of ammonium nitrogen.
Updated On: Jul 9, 2026
- Urea
- Calcium ammonium nitrate
- Ammonium sulphate
- Potassium nitrate
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The Correct Option is B
Solution and Explanation
Step 1: Understanding the Concept:
Nitrogenous fertilizers have different physiological effects on soil pH.
Applying acid-forming fertilizers to an already acidic soil can worsen soil acidity, which impairs nutrient release in aquaculture ponds.
Step 2: Detailed Explanation:
Let us analyze the chemical properties of the given fertilizers:
1. Urea: It undergoes hydrolysis to form ammonium carbonate, which eventually acidifies the soil.
2. Ammonium Sulphate: It is highly physiologically acidic and lowers soil pH rapidly.
3. Calcium Ammonium Nitrate (CAN): It is a neutral fertilizer.
It contains calcium carbonate, which acts as a liming agent and buffers the soil.
This prevents any further increase in acidity, making it the most suitable option for slightly acidic soils.
Step 3: Final Answer:
The nitrogenous fertilizer suitable for slightly acidic soil is Calcium ammonium nitrate.
Nitrogenous fertilizers have different physiological effects on soil pH.
Applying acid-forming fertilizers to an already acidic soil can worsen soil acidity, which impairs nutrient release in aquaculture ponds.
Step 2: Detailed Explanation:
Let us analyze the chemical properties of the given fertilizers:
1. Urea: It undergoes hydrolysis to form ammonium carbonate, which eventually acidifies the soil.
2. Ammonium Sulphate: It is highly physiologically acidic and lowers soil pH rapidly.
3. Calcium Ammonium Nitrate (CAN): It is a neutral fertilizer.
It contains calcium carbonate, which acts as a liming agent and buffers the soil.
This prevents any further increase in acidity, making it the most suitable option for slightly acidic soils.
Step 3: Final Answer:
The nitrogenous fertilizer suitable for slightly acidic soil is Calcium ammonium nitrate.
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