Question:

Given below are two statements:
Statement A: Liming of acid soils with limestone and/or basic slag helps in neutralizing exchangeable aluminium (Al\(^{3+}\)) and increasing pH of soils to a desired level.
Statement B: Over-liming of acid soils has adverse effect on soil nutrient availability, particularly of micronutrients (Zn, Cu, Fe and Mn) and crop growth.
Choose the correct answer from the options given below:

Show Hint

Liming: increases pH, neutralizes Al toxicity.
Over-liming: reduces Zn, Cu, Fe, Mn availability.
Proper lime application is essential.
  • Both A and B are correct
  • Only A is correct
  • Only B is correct
  • Both A and B are incorrect
Show Solution
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The Correct Option is A

Solution and Explanation

Step 1: Understanding the Concept:
Liming is a practice to correct soil acidity.
It has both benefits and potential drawbacks.

Step 2: Key Formula or Approach:

No specific formula.
Need to understand the effects of liming.

Step 3: Detailed Explanation:

Statement A: Liming neutralizes exchangeable aluminium and increases pH.
This is correct.
Statement B: Over-liming reduces availability of micronutrients.
This is also correct.
Thus, both statements are correct.

Step 4: Final Answer:

Both A and B are correct.
Hence, the correct option is (A).
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