This study aimed to study Knowledge and understanding, attitude, motivation and acceptance of RSPO standard for small oil palm farmers in Chumphon Province, to study factors affecting oil palm farmers to be certified by RSPO and to propose a practical model to promote RSPO among farmers. The study was conducted with qualitative and quantitative research methods. Questionnaires were collected from 390 small oil palm farmers who have not been certified by RSPO. The collected data was used for descriptive statistics, correlation analysis and multiple ...