Determination of Iran's Agricultural Optimal R&D Expenditure

R&D is one of the most important and suitable strategies government’s policies for increasing of agricultural production and supply. In this study، in addition of economic evaluation of agricultural R&D and determination of its rate of return، optimal Iran’s agricultural R&D expenditure is determined. So، in this article، ex-post and ex-ante evaluation by using of Mathematical programming approach are used for determination and evaluation of agricultural R&D expenditure for years of 1967-2007. Estimation of optimal R&D expenditure indicate that optimal R&D budget is 23. 5 percent more than current R&D budget and optimal optimal supply is 14. 4 percent more than current supply. Results indicate that rate of return for current agriculture R&D is 29. 12 percent. Whereas added R&D rate of return respect to Current R&D is 38. 35 percent.