Productivity Growth and Sustainability in Post-Green Revolution Agriculture: The Case of the Indian and Pakistan Punjabs

This article attempts to determine the long-term productivityand sustainability of irrigated agriculture in the Indian andPakistan Punjabs by measuring trends in total factor productivityfor production systems in both states since the advent of theGreen Revolution. These measurements over time and across systemshave resulted in three major findings. First, there were widespatial and temporal variations between the two Punjabs. Althoughoutput growth and crop yields were much higher in the IndianPunjab, productivity growth was higher by only a small margin.Moreover, the lowest growth in productivity took place duringthe initial Green Revolution period (as opposed to the laterintensification and post–Green Revolution periods) andin the wheat-rice system in both states. The time lag betweenadoption of Green Revolution technologies and realization ofproductivity gains is related to learning-induced efficiencygains, better utilization of capital investments over time,and problems with the standard methods of productivity measurementthat downwardly bias estimates, particularly during the GreenRevolution period. Second, input growth accounted for most ofthe output growth in both Punjabs during the period under study.Third, intensification, especially in the wheat-rice system,resulted in resource degradation in both Punjabs. Data fromPakistan show that resource degradation reduced overall productivitygrowth from technical change and from education and infrastructureinvestment by one-third. These findings imply the need for policiesthat promote agricultural productivity and sustainability throughpublic investments in education, roads, and research and extension;and that reduce resource degradation by decreasing or eliminatingsubsidies that encourage intensification of inputs.