What is a Norfolk crop rotation system?
The Norfolk system, was a new system in which four crops were rotated instead of three. This system also removed the fallow field and replaced it with turnips and clover. These made excellent winter cattle feed as well as enriched the soil with nitrogen which was found to exist on the tips of their roots. When the plant was removed, the root tips and nitrogen was left behind. This system greatly increased profits as it removed and enriched the fallow field.