Прегледај по Аутор "MALIČEVIĆ, Zoran"

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    ASSESSMENT OF THE QUALITY OF THE WORK OF TRACTOR AGGREGATES DURING BASIC TILLAGE
    (University of Montenegro, 2024) MALIČEVIĆ, Zoran; JUGOVIĆ, Milan; OMEROVIĆ, Zuhdija; ĐOKIĆ, Milena
    A plow is a tool used to perform basic cultivation of soil in order to restore the arable soil layer. The quality of its execution is one of the most important factors that ensures the stable production of plant crops. With a well-executed basic tillage, the same plot is of the appropriate structure, which implies minimal energy consumption for pre-sowing preparation. The research was conducted in field conditions, and it included basic parameters that were an indicator of the productivity of machine and human work. The Zetor Forterra tractor has an installed power of 100.02 kW and is in operation for the first time. The goal of the research is to examine the possibility of adjusting basic parameters in order to increase the quality and productivity of work. The results obtained in this research indicate that despite the good conditions of exploitation of tractor aggregates, the effects that should be provided by new, modern mechanization during intensive production have not been achieved in practice. It is necessary to pay special attention to parameters such as: coefficient of utilization of the work scope, shift efficiency, and productivity of machine and human work.
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    THE SIGNIFICANCE OF TRANSVERSAL DISTRIBUTION DURING THE APPLICATION OF PLANT PROTECTION BY BOOM SPRAYER
    (Biotechnical Faculty of the University of Montenegro, 2020) MALIČEVIĆ, Zoran; LAKIĆ, Željko; JUGOVIĆ, Milan; MITROVIĆ, Dragoljub
    The capacity of nozzles changes during the exploitation, i.e. it produces deviation from normal values. The consumption has an effect on the increase of the capacity of the nozzle, or the fraying and abrasion of the cartridge itself, which has a consequence of increased flow of the substance. On the other hand, decrease of the capacity occurs as a consequence of impurities which come with water which is used as a carrier of substances. The aim of the study is to point to the significance of regular control of the nozzle capacity, since it affect on the quality of the application, all of which affect the deviation from the mean value of the transverse distribution. Measured deviations of the nozzles according to the positions had significant deviations (5- decrease 83,33%, or 13- increase of the capacity for 61,11%), and the consumption of the substance according to the surface (ha) fit perfectly. During designing and monitoring of the treatment standard, most of the producers monitor consumption (l/ha), and this paper points to frequent occurrences in practice (deviations) that can significantly affect the quality of the application, as shown by water-sensitive papers. The coverage of water-sensitive papers ranged from 5.60 to 57.40%.