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Crop rotation is a practice used to maintain nutrients in agricultural soil. When crops are planted in a field, the nutrients are drained from the soil into the plants. If all of the nutrients are removed from soil, it cannot hold water properly and becomes desolate- drying up and turning to dust. (For examples of this, look up what happened in the west during the great depression. Many people didn't rotate crops, and there were massive dust-storms because the loose soil blew in the wind.)

In rotating crops, farmers will often put livestock onto a field every few years. The animals eat proper food, and the animal waste (which is filled with nutrients) is mixed back into the soil to be absorbed by the next crop. Alternatively, they will plant a type of crop that uses different nutrients than the previous crop to balance out nutrient use and production.

By maintaining a lot of nutrients in soil, the farmers ensure that it can produce good, healthy crops for a long time.

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15y ago

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