แผนการผลิตพืชที่เหมาะสมของเกษตรกรที่มียางพาราเป็นพืชทางเลือกในจังหวัดเชียงราย

Abstract

The main objective of this study is to derive optimal crop production plans for farmers having para rubber as an alternative crop in Chiang Rai province. The analysis was made using Linear Programing model, with the cost, return, and worthiness associated with the investment on the on-farm establishment of para rubber of farmers in Chiang Rai Province. Data were collected through questionnaire from 100 samples of farmers in Thoeng and Chiang Khong Districts of Chiang Rai Province in 2010/1. Each farmer was divided in 3 group, small farm, medium farm and large farm. For the analysis of investment worthiness of establishing para rubber trees in three different farm size groups, the net present value (NPV) discount rate 7 % and the project period was set at 27 year, the para rubber project is worth investing. The optimal production obtained from the linear programing model by taking account a change up and changes down in both price and cost, rice in market price and para rubber in price policy. In addition para rubber as an alternative crop in Chiang Rai province and optimum crop production advice annual glutinous rice, water melon, maize and second season glutinous.