Farmers who contributed a crop of over 3,000 koku from their harvest were promoted to the sixth rank in the kuni (order of merit), those who contributed over 1,000 koku received tax exemption for life, and those who already held the eighth court rank or higher were promoted by one rank in the kuni.
百姓で3,000石以上の収穫をあげれば勲位六階、1,000石以上は終身庸を免除、八位以上の者は勲位一階を昇叙する。