The crop rotation has more benefits than natural rejuvenation of the soil. It also helps to prevent many plant diseases. Here in Illinois, farmers plant corn in the early Summer for harvest about October. Then they plant winter wheat which is combined usually in June of the next year. Then they plant soybeans which, hopefully, will mature before killing frosts. Three crops in two years but none are consecutive. Same thing is said about peonies and iris--do not replant in the same place.
