Question

how are nutrients replenished in the soil.​

Answer 1

Nutrients in the soil are replenished by adding fertilisers and manures. Fertilisers and manures contain plants nutrients and minerals like nitrogen, phosphorus and potassium. Another way to replenish soil is to grow leguminous crops (for example gram, peas, pulses etc.) in the soil.

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Answer 2

Answer:

Nutrients in the soil can be replenished chemically by adding fertilizers and manures. ... Biologically, the nutrients are replenished by the bacterium called Rhizobium, which can take atmospheric nitrogen and convert it into a soluble form. The nutrients are replenished in the soil by other methods like crop rotation.