|Age Available||Imperial Age|
|Stats||Farms have +175 Food|
|Available To||See table|
Crop Rotation is a technology in Age of Empires II that can be researched at the Mill. This technology will upgrade Farms to have +175 Food. When combined with the preceding Mill technologies, farms will recieve a food bonus of +375 giving them a food total of 550.
- Chinese instead recieve +45 food as a team bonus.
With experience over time farmers noted that food production gradually declined on fields where the same crops were planted year after year. Experimentation showed that proper crop rotation could restore high yields. Farmers of the Middle Ages did not understand the science of this result but developed a practical plan through experience. Planting the same crops over and over depleted specific nutrients that a plant needed in quantity. Through crop rotation, different plants were found to restore the nutrients needed by something else. Alfalfa, for example, restores nitrogen to soil from which it has been depleted by other crops. Planting alfalfa restored the soil for the next year and made good winter feed for livestock.
|Economic Technologies (Age of Empires II)|
Town Center: I: Loom II: Wheelbarrow III: Hand Cart