What's somewhat amusing is this is essentially talking about a variation on the four course crop rotation, a farming practice that dates back to the 17th century, and at one stage dominated the farming practices of Europe.

from https://www.britannica.com/topic/Norfolk-four-course-system

> In the Norfolk four-course system, wheat was grown in the first year, turnips in the second, followed by barley, with clover and ryegrass undersown, in the third. The clover and ryegrass were grazed or cut for feed in the fourth year. The turnips were used for feeding cattle and sheep in the winter. This new system was cumulative in effect, for the fodder crops eaten by the livestock produced large supplies of previously scarce animal manure, which in turn was richer because the animals were better fed. When the sheep grazed the fields, their waste fertilized the soil, promoting heavier cereal yields in following years.