Crop Rotation is the last in line of farm techs. In addition to the previous techs your farms get +175 Food so they last longer before expiring and thus saves you wood. Certainly a good idea in late game when you don't want to rebuild your farms as much.
Technology Statistics[]
Available to: Flanders, Friesland, Helvetia, Savoy
Researched at: Mill
Century: 15th
Requires: horse collar, Heavy Plow
Cost: 250 Food, 250 Wood
Effect: Farms +175 Food
