Sampling design for Barley, Wheat, Potato, Sweet Potato, Bean, Corn and Italian ryegrass cultivated Farms survey

In this paper, sample survey is considered for each crop to develop technologies tailored to the consumer for seven crops, including barley, wheat, potato, sweet potato, bean, corn and Itailan ryegrass to estimate the cultivation area and scale of cultivation for each crop, and to determine the spread and performance of varieties currently being distributed to farms. The purpose of this study is to generate basic data base or crops by estimating the cultivation area and cultivation scale for each crop based on the results of interviews (telephone) surveys by farmhouse and analyzing the dissemination performance of the varieties being distributed to farmhouses. Among the 13 crops surveyed, this paper considers the 2021 farm management DB for 7 crops as the population, selects major cultivation areas according to the climate characteristics of each crop based on the cultivation area for each crop, Stratified according to the cultivation area for each crop by major production area, and about 1,200 farms were divided into a total layer and a sample layer, and the proportional distribution, Neiman distribution, and idempotent distribution were considered. Sample farm households were distributed. Finally, the weight adjustment and estimation process for sample farms were presented.