The purpose of this study is to assess the share of the total factor productivity growth and capital stock in the growth of agricultural sector following the Asian Productivity Organization method and application of production function and statistics published by Central Bank of Iran and Management and Planning Organization during pre-revolution (1963-1977), and post-revolution (1978-2006) periods. The results indicate that the sources of agricultural growth during the period 1963-1977 were growth in capital stock and in the labor force and thus, it followed an exogenous growth model, while the sources of agricultural sector growth during the period 1978-2006 were the growth of capital stock, the growth of total factor productivity and the growth of labor force. It should be mentioned the rate of total factor productivity during the period 1959-2006 had high fluctuations.
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