LESSONS FROM THREE DECADES OF GREEN REVOLUTION IN THE PHILIPPINES

Jonna Estudillo and Keijiro Otsuka ()

The Developing Economies, 2006, vol. 44, issue 2, 123-148

Abstract: The purpose of the current paper is to assess the changing contributions of successive generations of modern varieties of rice (MV) to yield increase and stability and the changes in total factor productivity (TFP) in irrigated, rainfed, and upland ecosystems in the Philippines. We found that the yield increase in irrigated ecosystem has been by far the highest, which can be attributed to the diffusion of pest‐ and disease‐resistant MV. The contribution of MV to yield increase in the rainfed ecosystem has been less significant, but much more compared with that of upland ecosystem. The rainfed and upland ecosystems have experienced an upward trend in yield, albeit slowly, because of the diffusion of improved traditional varieties and MV suitable to adverse production environments. The contribution of MV cum irrigation has accounted for approximately 50% of the growth of TFP in Central Luzon.

Date: 2006
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