After the Sekigahara War, Masamune encouraged each proprietor of a domain for reclamation works by introducing a system to award the reclaimed land as a domain of the developer; this system promoted the development of new rice fields in the Sendai Plain.
政宗は関ヶ原以降、開拓地を知行として与える方式を取りら各領主に開墾を奨励、仙台平野の新田開発を推し進めた。