In this thesis, we investigated the effects of working speeds of 5 km/h, 7 km/h and 9 km/h during soil tillage with a front- mounted cultivator and a rear- mounted sowing combination for the sowing of crimson clover (Trifolium incarnatum L.). Fuel and energy consumption, effective field capacity and time requirements, soil bulk density and the size distribution of soil aggregates were monitored. Crop performance was evaluated based on plant density, dry above- ground biomass and the mass of cleaned seed. As the working speed increased, effective field capacity increased from 1,39 ha/h at 5 km/h to 2,28 ha/h at 9 km/h, while the time required to cultivate one hectare decreased from 43 minutes to 26 minutes. Fuel consumption decreased from 8,13 l/ha to 7,17 l/ha. The results for the physical properties of the soil did not indicate a negative effect of increasing working speed. The highest average crop density was recorded at 9 km/h (523 plants/m2), the highest dry biomass at 7 km/h (3,87 t/ha) and the highest estimated cleaned seed yield at 9 km/h (697 kg/ha). The results indicate that, among the tested working speeds, 9 km/h was the most favourable, particularly in terms of work efficiency, with no evident deterioration in the monitored soil and crop characteristics.
|
