Question

if the soil have all nutrients , why do we need to replenish the soil?

Answer 1

It is necessary to Replenish the nutrients into the soil for the following reasons:

---> All the nutrients  like nitrogen, phosphorous and potassium that are available in the soil naturally will be used in growth of plants. 

---> This reduces soil fertility

---> If again plants are grown in these region, the soil will lack nutrients . Hence  for the continuous supply of nutrients we need to replenish.

--->Cultivation and yielding of plants rate decreases

Answer 2

Answer:

so that nutrients present inside the soil should come up

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