from The American Heritage® Dictionary of the English Language, 4th Edition
- n. The successive planting of different crops on the same land to improve soil fertility and help control insects and diseases.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A farming practice in which the same land is used to grow different crops in successive seasons or years (when once the land would have been left fallow); used to prevent erosion and increase fertility.
Sorry, no etymologies found.