Question

Which of the following crops would enrich the soil with nitrogen?
A. apple
B. pea
C. paddy
D. potato

Answer 1

Answer:

The answer is B. Pea.

Explanation:

The pea plant contains Rhizobium bacteria in the root nodules of the root. These Rhizobium bacteria fixes the nitrogen from the air and converts into nitric compounds that increase the nitrogen enrichment in the soil.

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Answer 2

B) Pea

Explanation:

The system of cultivating a leguminous crop between two cereals crops is called crop rotation.

Crop rotation is very helpful for the soil because:

1. It improves the fertility of the soil by replenishing it with nitrogen .
2. Increases the production of food grains.
3. Leguminous plants can fix atmospheric nitrogen with the help of bacteria into the soil, thus the next crop will require less amount of nitrogen fertilizer.

Green pea is a legume plant. Option B is the answer.