In 2021, the field trial was done on heavy soil in Globodol near Mirna Peč, in which reversible plough with 4 ploughing bodies and stubble cultivator with adjusted working depth of 10 cm and 15 cm was compared. Stubble cultivator was equipped with three rows of tines with spring overload protection, discs and tooth roller. When working with these machines the working speed was read from tractometer and the fuel consumption from tractor terminal. Area efficiency (ha/h), time efficiency (h/ha) and fuel consumption per hectare (l/ha) was calculated from these data. Then the soil was cultivated using rotary harrow and the seed was planted with the pneumatic vacuum planter. We measured also plant emergence and the distance between plants in the row. At the end the maize clips were picked up by hand and the yield was calculated. When working with stubble cultivator at both working depths of 10 cm and 15 cm the area efficiency was higher and the time efficiency was smaller compared to reversible plough. Fuel consumption was the largest (19.9 l/ha) at reversible plough and the lowest (12.8 l/ha) at stubble cultivator at 10 cm working depth. On the trial plot where stubble cultivator at 10 cm working depth was used the grain yield was lower (6,117 kg/ha) in comparison to other two treatments. The highest plant emergence (85.3%) was achieved at stubble cultivator at 10 cm depth, while there were no larger differences between treatments regarding distance between plants in the row.
|
