irrigation, INTERPAKS, Examines the role of extension in irrigated agriculture in the Mahi-Kadana Irrigation Project, Gujarat and assesses the overall effects on production levels, Presents a descriptive account of extension activities in the area as well as the methodology and results of an empirical analysis. Results indicate 1) extension makes a positive contribution in agricultural production and irrigated agriculture, in particular; 2) the supporting role of credit is essential; and 3) an increase in extension expenditure by Rs. 1 million would result in a 12 point increase in the aggregate production index.