Question

What is crop rotation and why is it important? Answer for clqss 8

Answer 1

Answer:

The practice in which different types of crops are grown alternately in the same field or soil is called crop rotation.

In crop rotation cereal crops like wheat, maize,paddy, millet are grown alternately with leguminous crops like pulses,peas,beans,groundnut,clover in the same field.

1) It improves the fertility of the soil by replenishing it with nitrogen and hence increases production of food grains.

2) It saves lots of nitrogenous fertilisers.

Explanation:

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Answer 2

Answer:

   Actually what happens when we used to plant wheat and rice it used to absorb nutrients from the soil. when we again plant the same wheat or rice on the same field there will be nutrient deficiency.

  So to overcome this problem we are planting legume variety what happening is legumes have symboitic association with bacteria and fixes nitrogen and some other nutrients in the soil which can be further used up by the next planted variety . this is the simple concept

Hope you understand