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The focus of this paper is on the mechanization of wheat, one of the oldest and most important and valuable plants on earth. Considering the fact that Fars province in recent years maintains the premier status in the production of this crop, in the country, a systemic view toward the mechanization of this product, may serve in the enhancement of efficacy of production. As far as the writer knows, such study on the mechanization of agricultural products is not carried out anywhere in the world. Here, in accordance to the methods of system dynamics, the authors utilized significant technological and economic factors, to design a System Dynamics (SD) structure for irrigated wheat (Triticum) mechanization in Fars province, Southwest Iran. The professional field known as SD has been developed for the last 55 years (1960) and it now has a world-wide and growing membership. SD combines the theory, methods, and philosophy needed to analyze the behaviour of the system, not only on its management, but also the environmental change, politics, economic behaviour, social science, medicine, engineering, agriculture and other fields. The System Dynamic model can be used to modify a few variables of the designed model which are important to future policy making, including optimum field capacity, wheat yield, and planting area, so that the proper efficacy is achieved. The overall results shows all measures leading to the reduction of the traction force, will result in the reduction of mechanical energy consumption of the plowing operations or mechanization capacity, and also increase the degree of mechanization, annual planting area and field capacity. The timeliness cost will also be reduced.

A system dynamics design for the structure of irrigated wheat mechanization in Fars province (Southwest Iran)