OPTIMIZATION OF MACHINE PARAMETERS FOR VARIABLE-RATE FERTILIZER APPLICATION
The analysis of dosing devices for mineral fertilizers and meliorants shows that they are not adapted for operational changes in dosing regimes during fertilizer application. Therefore, it is advisable to build a design and technological scheme of the machine for differentiated fertilizer application with the breakdown of the machine into separately controlled sections by the width of the grip, since this will ensure higher efficiency of fertilizer use. The most suitable for these requirements as an analogue is a prototype of a combined unit for sowing and differential fertilization MD U-7.2 design FNAC VIM. Calculations performed for the machine show that the total area of the field, received increased and reduced doses, will be approximately 1,5 % of the total area of the field, which can be considered quite acceptable.