In Yoshikawa-ku, Joetsu City, which is the largest Gohyakumangoku growing district in Niigata Prefecture, efforts to grow it with the Nagata agricultural method have been made since the 1980s and sakamai with improved brewing aptitude (such as sugar content, hardness and structure) have been produced.
新潟県内での五百万石の最大産地である上越市吉川区では1980年代から永田農法による栽培に取り組み、糖度・硬度・構造などの醸造適性を工夫した酒米を生産している。