Published in Scientific Papers. Series A. Agronomy, Vol. LXVIII, Issue 2
Written by Petya GENKOVA, Manol DALLEV, Vera STEFANOVA
The final process of mechanical impact of the working soil tillage tools is the achievement of a certain aggregate composition regarding the size of the fractions. The object of the study is Innovative working bodies and the certain values of soil fragmentation. The indicator of agronomically valuable soil is determined by the fraction with sizes from 1 to 25 mm. The data are processed at three different indicators regarding the speed of the machine-tractor unit, at two different soil terrains. The experiment was carried out with a tillage mill with non-standard, disk working bodies with a horizontal axis of rotation. The percentage of soil fragmentation into aggregates is determined for each experiment, by taking 5 soil samples at equal distances along the length of the experimental field. The results after the experiment show that with innovative disks at certain indicators such as soil type, humidity and speed, optimal values of the soil aggregate composition are reached.
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