The results of experimental research and testing of a machine for surface application of mineral fertilizers with inclined centrifugal scattering devices

Annotation Purpose. Increase the productivity of solid fertilizer applicators by increasing their working width. Methods. In the process of experimental research, the basic provisions of GOST 20915-75 “Agricultural machinery. Method for determining test conditions”, GOST 28714-2007 “Machines for applying solid mineral fertilizers. Test methods”. The results were processed using the Microsoft Office Excel 2007 software environment. Results. Setting the angle of inclination of the axis of the centrifugal working body of the TON within the range of 25–30° makes it possible to have the productivity of the machine-tractor unit for applying mineral fertilizers in 1 hour of the main time at the level of 35–40 ha/hour. Conclusions 1. The most intensive growth of the working width of the machine capture (84.8%) takes place with an increase in the angle of inclination of the TON disk to the horizontal plane up to 10°. At the same time, the working width of the machine increases from 16.5 m to 30.5 m, that is, 1.85 times. The subsequent increase in the disc installation angle in the horizontal plane to 30° leads to an increase in the working width of the machine by 11.4–14%, that is, by 1.11–1.15 times. An increase in the disc installation angle in the horizontal plane from 30° to 40°, provided that fertilization is applied with an unevenness of up to ±20%, does not lead to an increase in the working width of the machine. 2. The best indicators of fertilization both in terms of the working width and the unevenness of fertilization are ensured when the angle of inclination of the TON disc to the horizontal plane is within 25–30°. Wherein: • the uneven distribution of fertilizers at the working width is 19.2%; • the uneven distribution of fertilizers in the direction of movement of the unit is 8.9%; • deviation of the fertilizer application dose from the established one is 7.5%. The obtained indicators of the quality of the application of mineral the requirements for the quality of this technological process. Keywords: mineral fertilizers, application, experimental research, testing, uniformity of distribution, width of capture, productivity.