INTERPAKS, Examines the nature and extent of different extension services available to farmers in Punjab state (1974-5) as well as the impact of extension inputs on productivity in agriculture. The design of the study was multi-stage stratified random sampling with weights assigned to different items of extension input (mass media, visits by extension officers, visits to extension agencies, training). On the average, each farmer visited the extension agencies 5.8 times a year, was visited 9.42 times, only 22% of farmers received training, 28% purchased daily newspapers, 86% listened to radio programs for the rural population, and 68% visited the university. Production function analysis was conducted both with and without extension inputs. The regression coefficient of the extension input was found to be 0.18 which was significant at the 5% level.
