Experimental analysis of productivity fluctuations in Iranian grain production factors.

Cereals include wheat, barley, rice and grain crops and are important in human and animal nutrition. These products are considered as strategic products and have always been considered by policy makers. The purpose of this study is to analyze the productivity fluctuations of Iranian grain production factors based on various indicators in the period 1988-2017 and the required data have been extracted from the sample census of the Ministry of Jihad Agriculture. In this study, Malmquist, Fare - perimont and Hicks-Moorsteen indices have been used. The results showed that the average changes in total productivity of wheat, barley, rice, corn and cereals of Malmquist index (17, 21, 20, 21, 20) and Fare-permont index (25, 8, 10, 11, 13) and Hicks-Moorsteen index increased by (7, 1, 2, 3, 3), Percentage respectively. The average change of all three indicators is due to the increase of technological changes. Therefore, in order to improve the productivity of grain production products, the application of new technologies and the optimal consumption of inputs should be given more attention