Ange waved his scythe, happily harvesting mature crops. With a growth period of a month and a half, these crops were as mature as they could be and ready to be harvested. This speed was beyond Ange's imagination.
When ange was stationed at the Resting Camp, the period from sowing to harvest took six months, and that was after Ange selectively bred the crops to hasten their growth.
Initially, when the undead souls had not vanished, the crops took six months to mature. During that time, Ange was sowing seeds brought in from elsewhere, so he didn't sense anything unusual.
However, after the undead souls disappeared and foreign seeds were no longer available, Ange could only use mature crops as seeds. After several years, he discovered crop degradation. Previously maturing in six months, it gradually increased to seven or eight months, and the crops became less, smaller, and shrunken.