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The Application of Nerlove and Koyck Models For The Response of Acreage and Production of Wheat Crop in Iraq During The Period (1993-2013) | ||
| Journal of Tikrit University For Agriculture Sciences | ||
| Article 1, Volume 17, Issue 1, 2017, Pages 302-308 | ||
| Authors | ||
| Thamer Zedan Mokhlef; Hesham Atala Abed | ||
| Abstract | ||
| The acreage and the production of wheat in Iraq were studied during the period(1993-2013) by applying nerlove and koyck models, the acreage was considered as dependent variable while the explanatory variables are the expected price, the price lagged one year, the acreage lagged one year, the productivity lagged one year, the price risk, the productivity risk, the dummy variable and time, many mathematical models were applied, the linear, logarithmic,Semi – log, and inv- semi-log model, the logarithmic function was chosen as the best according to statistical and economical crieteris, and economical the statistical results showed that the expected price, the price lagged, the acreage, the productivity lagged and dummy variable had positive significant effect on the – acreage of this crop, on addition the results showed that the farmers and the ability to bear the price risk and no ability to beax the productivity risk- and the dummy variable showed that the acreage of this crop had expanded during the period of economic blockade the Nerlovian coefficient mounted to (0.96) and the price elasticity for short and long run were mounted to (1.83), (1.906) respectively, the results of Koych model showed that the short runm and long elasticities monted to (0.062) (5.153)Respectively, in order to expand the acreage of this crop, it was recommended to raise the price of purchase to the limit of its national price and to use the high-yield in varieties of this crop, and to facilate the marketing process by establish. New hermitage and to insurance companies to minimize the risk of production during the season of drought. | ||
| Keywords | ||
| Nerlove; koyck; swathes; Yield | ||
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