The rural community in the latter period of the Yi Dynasty underwent changes in various aspects. One of the specially noteworthy changes was an increase in the number of petty farmers resulting from the differentiation of economic strata. The peasants became small-land holders to the extent that they could no longer make a living by cultivating only their own lands. It was for this reason that tenant farming as a side job prevailed among petty farmers so widely as to form one pattern of farming.
The land cadastres in the latter period of the Yi Danasty reveal that the land holdings of peasants were of an extremely small scale. However, this doesn't mean they were impoverished. The class system in the Yi Dynasty was strictly maintained, but in the latter period, a change was brought about to this system. That is, farmers were provided with the opportunity to acquire higher social status through the wealth they had accumulated.
These two phenomena seem to be contradictory to each other, for the occupancy of small lands by the peasants made it impossible for them to acquire higher social status, and the other hand, the acquisition of higher social status by the peasants was impossible with wealth. However, though the land holdings of the peasants were of an extremely small scale according to the land cadastres, they nevertheless had the opportunity to acquire higher social standings. The peasants could accumulate wealth through tenant farming, agricultural commercial production, engaging in commercial and manufacturing activities, and the development of farming techniques, etc.
The present write dealt with these problems connected with the social change in the latter period of the Yi Dynasty in his previous studies of the land cadastre of that time, and in this paper, he treats the development of agricultural technology with special emphasis on the development of the waterfield rice cultivation technique and the spread of the rice-transplantation method.
Before the rice-transplantation method was generally spread among the farmers, there were various rice-seed planting methods practiced, such as rice-seed planting in water-fields, rice-seed planting in dry fields, and transplanting of young rice plants in water-fields. The first two planting methods are called a direct planting methodf and the last one a transplantation method.
In the Koryo period and the early period of the Yi Dynasty, the direct rice-seed planting method was widely employed. Though the rice-transplantation method was already known in the early period of the Yi Dynasty, it was only locally adopted in Kyongsang Province and the southern part of Kangwon Province adjacent to Kyongsang Province. However, from the middle period of the Yi Dynasty on, this transplantation method gradually became adopted throughout Kyongsang, Ch'ungch'ong and Cholla Provices, and in the latter period of the Yi Dynasty, it rapidly spread across the country. Thus, in the reigns of King Sukchong and King Yongjo, approximately seventy or eighty per cent of the rice paddy fields in Korea were farmed by this method. Originally this method was prohibited by the government, but it was so widely employed among farmers that the government could no longer place a ban on it.
There were many reasons for the spread of this transplantation method in the latter period of the Yi Dynasty. One of the reasons was that this method had a high degree of adaptability and that with the diffusion of knowledge on agricultural technique, the farmers realized the merits of this method in that labor power in weeding and other work could be saved, that crops could be increased through the utilization of fertility, the removal of inferior young rice plants and semi-annual crops, and that rice-seeds could be saved. Especially, the saving of labor power was acutely desired by wealthy farmers for the expansion of their farming fields, and this fact, related to the totality of problems of rural economics of that time, is specially worthy of note.
In other words, the adoption and spread of the rice-transplantation method in the latter period of the Yi Dynasty were promoted by the economic factor of crop increase as well as by the technical factor of convenience in weeding. In this sense, we can see that compared with the early period of the Yi Dynasty, rice cultivation in the latter period was much improved technically and the economic consciousness of the farmers in rice cultivation was more sophisticated. Thus viewed, we can easily surmise that as a result of the spread of the rice-transplantation method, the productivity of rice must have been greatly developed, which, in turn, gave a great impact upon the rural community at that time. In short, the rural community in the latter period of the Yi Dynasty was marked by a social change and the differentiation of economic strata resulting from the increase in productivity. We can trace in this phenomenon the socio-economic significance of the development of agricultural technology.