The aim of the research is to substantiate the main parameters of the machine working elements for preparing the soil for sowing on the ridges and their mutual location. The authors have developed a machine that performs all technological operations to prepare the soil for sowing potatoes on the ridges in one pass in the field. The machine performs surface loosening of the soil, strip deep loosening of the soil, formation of ridges, loosening of the surface layer of the ridge top, compaction, and giving them a trapezoidal shape in one pass. The design of the developed machine for the realization of technology of preparing the soil for potatoes sowing is resulted. The basic principles and methods of classical mechanics, mathematical analysis, and statistics were used in this study. Theoretical studies established the following parameters of the working bodies of the machine: the working width of the bodies 200 mm, length of the blade wing 515-545 mm, angle of slope of the ploughshare left to its base 60, length and height of the guide knife respectively 150 mm and 80 mm, the longitudinal distance between the bodies within 350-400 mm, width and length of the drill bit 80 mm and 115 mm respectively, the working width of the lancet leg 150 mm.

This article analysis of drying agent’s spreading in ventilated drying of stem type agricultural crops and vegetable seeds, through which it aims to produce more and more high-quality products. The similar drying was not observed in different parts of the crops in ventilated drying, some parts of the drying product were dried out but some parts not dried well. The aims of the paper study this process. Therefore, products must be placed in the dryer with the thickness to have each point dry at the same time. Based on the practical experience of this criterion, the determination of loading thickness in drying was carried out theoretical analysis by using analytical dependencies. Theoretical analysis and analytical dependencies allow determining dimensions of the stack, layer thickness

One of the problems in the seed production of pasture forage plants is low seed germination. Existing pasture improvement technologies and technical means for seed production, harvesting, post-harvest handling, and storage of pasture forage plants are analysed. Suggestions for improving seed germination have been developed: it is advisable to place the seed crops between the forest belts; to improve seed germination, it is necessary to make a preliminary harvest of seed crops with spreading the mass on the stubble; the mechanised collection of seed heaps using a rotary mower with an active heap separator increases the germination rate by reducing mechanical damage to the seeds and enriching the soil with organic matter; the seed sowing process has a positive effect on the germination rate of the seed produced, in addition to reducing cleaning costs.

The article presents the results of experimental studies to determine the dependence of the rotational speed of a pneumatic disc sprayer with coaxial air flow on the flow rate of the working fluid. To refine the parameters of the working body, studies were carried out within the liquid flow rate q, corresponding to the first and second spraying modes, at different rotation speeds ω, the working body's radius r, and the number of radial channels np. At the same time, the mass of the rotating part of the pneumatic disk atomizer was determined. The quality of dispersion of the working fluid obtained experimentally by a multi-disk atomizer in a film version driven by an air flow corresponds to a low-volume liquid atomization mode.

The article presents methods for determining the main parameters of a rotating atomizer sprayer. The choice of research methodology is justified based on the general pattern of liquid atomization by rotating atomizers, taking into account the influence of the air flow on them. The main indicators affecting the sprayed drops' dispersal are the air flow rate and the rotational speed of the pneumatic disk atomizer. Therefore, the correct choice of the method for determining the rotational speed ω of a pneumatic disk atomizer makes it possible, at a constant air flow rate, to obtain the required median-mass diameter of the atomized droplets. To obtain a high-quality air-droplet flow, there must be a combination between the initial speed of the main drops discharged from the spray disk's periphery and the fan installation's air flow speed.