give reason: plantation of the same crop in field over and over should be avoided.
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This should be avoided as the same crop will take same nutrients from the soil and will make it poor in that particular nutrient.
samakram:
explain it more briefly
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Because it can damage the soil and if the same crop is grown no nourishment will be there neither in the soil nor in the plant.To regain nourishment crop rotation method should be used plants should be differently not the same plant should be grown or the field should be left bared for few days or months.
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