Because Miyama nishiki, which was heavily used in Ibaraki Prefecture, was weak in the prefectural environment in terms of its resistance to lodging and disease, it was developed to overcome those problems.
それまで同県内で多く使用されてきた美山錦は、県の環境にとって耐倒伏性、耐病性に弱かったため、その点を克服すべく開発された。