The study was conducted in eight villages of Nelamangala taluk to find out the factors contributing to knowledge level of trained and untrained farm women. The data collected from 80 farm women on their knowledge level  and socio-psychological characteristics were analysed with the help of principal component analysis.  The findings revealed that factors which contributed most to the knowledge level of farm women were land holding, organizational participation, decision making and scientific orientation.  While, in case of untrained farm women, the factors were age, marital status, land holding, decision making and scientific orientation.