Through Taiko-kenchi (the land survey by Hideyoshi TOYOTOMI) production capacity of lands was indicated by (crop) yield (production volume of brown (unpolished) rice) and depending on the yield, nengu (land tax) was levied.
豊臣秀吉の行った太閤検地により、土地の生産力を石高（玄米の生産量）であらわし、その石高に応じて年貢を課すこととされた。