The three-field system is a regime of crop rotation in use in medieval and early-modern Europe from around the time of Charlemagne. Crop rotation is the practice of growing a series of dissimilar/different types of crops in the same area in sequential seasons.Under this system, the arable land of an estate or village was divided into three large f...
Found on
http://en.wikipedia.org/wiki/Three-field_system
method of agricultural organization introduced in Europe in the Middle Ages and representing a decisive advance in production techniques. In the old ...
Found on
http://www.britannica.com/eb/a-z/t/45
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