However, it is thought that, the spread of sweet potato cultivation to the Kanto region was after Konyo's trial prototype and a lot of trial and error by a lot of nameless sweet potato teachers.
しかし、関東地方に薩摩芋栽培が普及する陰には、昆陽の試作以降、多くの試行錯誤が行われ、多くの名もなき甘藷先生がいたと考えられる。