The practice of sustainable agriculture demands the best qualitative indexes for spraying machines and, especially, better distribution uniformity on the working width of these machines. The experimental trials in labaratory conditions were made for EEP-600ME mounted spraying machine by using the HERBST TEST 1000 testing equipment for measuring the cross-cut distribution uniformity, which showed the fact that the boom inclination angle has a great influence on distribution. Rise of boom inclination angle over 2 º  leads to decreasing of distribution uniformity. At boom inclination angle only by 5º, the variation coefficient of distribution uniformity is over 37%, value that exceeds the allowable limit by four times over. At boom inclination angle only by 7º, the variation coefficient of distribution uniformity to get 29%. In order to maintain the qualitative indexes in sloped areas there is a demand to use spraying machines that are equipped with devices for boom leveling .

spraying machine, boom inclination angle, variation coefficient for distribution uniformity.

Presentation: oral