Question

How can crop rotation help in maintaining the fertility of soil?

Answer 1

Growing the same crop  in the same place for many years in a row disproportionately depletes the soil  of certain nutrients . With rotation, a crop that leaches the soil of one kind of nutrient is followed during the next growing season by a dissimilar crop that returns that nutrient to the soil or draws a different ratio of nutrients. In addition, crop rotation mitigates the buildup of pathogens and pests that often occurs when one species is continuously cropped, and can also improve soil structure  and fertility  by increasing biomass from varied root structures.

Crop rotation is used in both conventional and organic farming systems.