A sample is a farmer in 250 people who research et collects data by using a query and analyze the data by value and volume, average per cent of the population. The results showed that
The samples Farmers in Roi Et Province, 250 people were collected using a questionnaire and analyzed by the percentage and the amount of the average population. The results showed that
The farmers in the province is the 250. The collected data and the data were analyzed by using percentage and the mean of the population. It was found that