Private and Social Returns to Higher Education-A Case Study of Delhi Graduates

April 4, 1970 penditure on the local variety found among non-participant farms over the various size-groups was only marginal. While average production per acre shows wide variation in respect of hybrid maize as between the lower and the; higher size-groups of farms, the variation in average productivity of the local variety was insignificant both for participant and non-participant farms in the various size-groups. The difference in average productivity, in respect of hybrid maize, between the lowest and highest size-groups of farms is of the order of 12.73 maunds per acre, as against only 0.54 maunds in respect of the local variety. It is ap parent, therefore, that in terms of return per acre, the disparity in the level of income has further increased. Maize has become essentially a commercial crop for the upper size-group of farms.