Question

Which of the following is the most suitable crop for green manuring?

• A. Red gram
• B. Black gram
• C. Soybean
• D. Cow pea

Hint:

Green manure crops:
- Cow pea, Sunn hemp, Berseem, Dhaincha.
- Fix nitrogen and improve soil organic matter.
- Incorporated into soil before flowering.

Answer 1

The Correct Option is D

Step 1: Understanding the Question:
This question tests knowledge of green manure crops.

Step 2: Detailed Explanation:
Cow pea (D) is the most suitable crop for green manuring.
It is a leguminous crop that fixes nitrogen and adds organic matter to the soil.
It grows quickly and is easily incorporated into the soil.
Other crops:
- Red gram (A): Pigeon pea (used as a pulse crop).
- Black gram (B): Used as a pulse crop.
- Soybean (C): Oilseed crop (not primarily for green manuring).
Thus, cow pea is the best green manure crop.

Step 3: Final Answer:
Thus, cow pea is the most suitable crop for green manuring, which corresponds to option (D).
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