Considering the production function framework this note examines the contributions of land, credit-financed investment, and technological change to agricultural production during pre and post-Green Revolution (GR) phases. The contributions of cretit-financed investments and technological chanage significantly improved in post-GR phase. The post-GR phase witnessed land and labour with complementary capital augmenting technological change. This enabled the increase in absolute contribution of self-financed invesments which accounted for an overwhelming share. Thus, policies related to credit, public investment in agriculture and R&D must not only be sustained but accelerated.