Saigo's 'prospectus of shaso storage' was put into practice after Tsuchimochi became a high ranked officer on Oki-no-erabu-jima island in 1870, and Oki-no-erabu shaso Storage was built.
この西郷の「社倉趣意書」は土持が与人となった後の明治3年（1870年）に実行にうつされ、沖永良部社倉が作られた。