The transformation here wasn't the kind seen in mutated plants.
Kim Haru conducted an experiment using a fast-growing potato plant, and to his astonishment, the plant grew tubers repeatedly!
He witnessed it with his own eyes: after pulling a potato from the root, another sprouted in the blink of an eye.
Its size, color, and shape were exactly the same as the previous one.
He repeated this cycle of harvesting and regrowth five times before the plant finally stopped producing.
In other words, from a single planted potato, he harvested five times the usual yield!
Of course, the transformations triggered by intermediate fertilizer weren't limited to just this.
Most changes involved improvements in yield, flavor, and usage, and they were all positive enhancements.