Scientific Journal of KubSAU

In assessing the optimal composition of machine and tractor fleet nomenclature and quantitative composition of parks of technical means and some parameters of production technology are used as varying variables, leaving the timing of mechanized fieldwork fixed. At the same time, changing the duration of mechanized operations in the most intense periods of the field season can significantly affect the amount of the basic means of mechanization as a part of machine and tractor fleet, the value of investments in its formation. The article used a method of determining the composition of the machine and tractor fleet of agricultural organizations considered the "flexible" duration of the mechanized operations in field and based on the iterative adjustment of the results of the optimization of machine and tractor fleet by the criterion of the minimum difference between savings investment and value of crop losses. The analysis showed that the economically viable term of harvesting of winter crops for domestic combine harvester Acros-530 is a period of 16 days. The article analyzes the economic efficiency of the different periods of the harvesting campaign using imported agricultural machinery. This work presents a sensitivity analysis of the effect of reducing the need to combine at different periods of cleaning of grain crops to the level of prices for products and equipments

We have highlighted the importance of ensuring a rational nomenclative and quantity structure of agricultural equipment for the timely and quality harvest of grain and cereal crops in agricultural organizations in southern Russia. The article shows the difficulty of choosing a certain trademark of combine harvester for the acquisition of a variety of domestic and foreign farm machine that implemented in the domestic market of agricultural machinery. We have considered different directions of price and operating characteristic of a combine harvester made by different manufacturers. We have also proved the exclusively importance and need for correct comparative economic assessment in conditions abatement of the national currency rate and a prices increase for imported equipment of mechanization, revealed methodical characteristic of technologic and economic evaluation of harvesting equipment, based on the calculation of unit (1 hectare harvest area) of aggregate costs, including the costs of exploitation a combine and additional costs caused to losses crops in the process of harvesting as design features of the machines. Comparative economic analysis of the most sold combine harvesters made by domestic and foreign manufacturers in the Russian market was carried out. We have proved the economic efficiency of the acquisition of domestic combine harvesters under current assessment at correlation prices for domestic and imported equipment of mechanization

In assessing the optimal composition of machine and tractor fleet nomenclature and quantitative composition of parks of technical means and some parameters of production technology are used as varying variables, leaving the timing of mechanized field work fixed. At the same time change the duration of mechanized operations in the most intense periods of the field season can significantly affect the amount of the basic means of mechanization as a part of machine and tractor fleet, the value of investments in its formation and operating costs. The article proposes a method of determining the composition of the machine and tractor fleet of agricultural organizations considered the "flexible" duration of the mechanized operations in field and based on the iterative adjustment of the results of the optimization of machine and tractor fleet by the criterion of the minimum difference between savings investment and value of crop losses. The realization of the algorithm described above will allow determining the optimal composition of machine and tractor fleet of agricultural organizations considering the possibility of changing the duration of mechanized operations in field in the most intense periods. At the same time the resulting calculations decision takes into account the compromise between the growth of production losses by increasing the duration of mechanized operations and a reduction in capital costs for the formation of the machine and tractor fleet