Technique of definition of optimum quantitative and age structure of tractor fleet

Abstract

For self-restoration in an annual cycle of works of such resources as tractor fleet, an arable land and labor potential, it is necessary to define optimum quantitative and age structure of tractor fleet. If agricultural enterprises buy tractors less, than write off, their total fleet is reduced. Besides they use machines, which depreciation period expired long ago. The solution of this problem possibly at methodological approach. Cumulative cost minimization is linked to reduction of quantity of the tractors working in excess of depreciation period as such machines operation is interfaced to additional expenses and harvest losses. Besides, value of the missed profit as a result of losses from disposal of production resources, reduction of total number of tractor fleet, the area of an arable land, a shortfall in production, violation of agroterms and crop rotations increases. The authors developed a technique of definition of optimum quantitative and age structure of tractor fleet. They established influence of the main resources of the mechanized agricultural production on production cost. Criterion of optimization is the minimum of cumulative cost. The sum of an overspending for use of the tractors working in excess of depreciation period and the missed profit were estimated. The optimum quantitative and age structure of tractor fleet includes 310.3 thousand tractors aged up to 18 years.