Question

The major factors controlling the leaching loss of nitrate are:
A. Concentration of nitrate in soil profile at the time of leaching
B. Quantity of water passing through the soil profile
C. Water holding capacity of soil
Select the correct answer from the options given below:

• A. A only
• B. B only
• C. Both A and B
• D. C only

Hint:

Nitrate leaching:
- Controlled by nitrate concentration and water quantity.
- Leaching leads to groundwater contamination.
- Management: Split application of nitrogen fertilizers.

Answer 1

The Correct Option is C

Step 1: Understanding the Question:
This question tests knowledge of factors affecting nitrate leaching in soil.

Step 2: Detailed Explanation:
The major factors controlling the leaching loss of nitrate are:
- Concentration of nitrate in soil profile at the time of leaching (A): Higher concentration leads to greater leaching.
- Quantity of water passing through the soil profile (B): More water leads to greater leaching.
Water holding capacity (C) is not a direct controlling factor for nitrate leaching.
Thus, both A and B are correct.

Step 3: Final Answer:
Thus, the major factors are both A and B, which corresponds to option (C).
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