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The '''three-field system''' is a rotational system for [[agriculture]] in which one field grows [[grain]], one grows [[legumes]], and one lies fallow. It gradually replaced the two-field system in [[medieval Europe]].
== Sources ==
The Earth and Its Peoples A Global History, Bulliet et al, 2005.
[[Category: Agriculture]]
== Sources ==
The Earth and Its Peoples A Global History, Bulliet et al, 2005.
[[Category: Agriculture]]