The aim of this study is to investigate the factors affecting adoption of organic farming. The study is a kind of applied and descriptive–correlational method. The research population is agricultural producers of Alborz Province. Sample size was determine by Cochran's formula (n=200) and using proportional stratified random sampling method. Data was collected through questionnaires that developed by researcher. Validity of questionnaires is estimated by a panel of experts in University and Agriculture experts of Jihad-e- Keshavarzi department of Karaj city. Reliability was conducted by a Pilot test study and for each of its parts Cronbach’s alpha coefficient estimated (0.72-0.95) which show its suit for research conduct. Data analysis using SPSS software package show that there is a significant difference between barriers to adoption of organic farming in under graduate and post graduated level at the 0.01 level. Also there is a positive relation between attitudes, technical information and frequency of connective channels with adoption of organic farming among Alborz Province farmers.