Different speeds of soil preparation with a disk harrow

V poljskem poskusu v letu 2022 smo ugotavljali vpliv hitrosti vožnje (7 km/h, 10 km/h in 13 km/h) pri pripravi tal z diskasto brano na porabo goriva, storilnost in pridelek koruznega zrnja. Poskusna zasnova so bili slučajni bloki s tremi ponovitvami. Poskusno polje se je nahajalo na lokaciji Breška vas pri Šentjerneju. Za pripravo tal pred setvijo smo uporabili nošeno diskasto brano kratke izvedbe delovne širine 3 m, proizvajalca AGRO-MASZ, in sicer v dveh prehodih po istem mestu. Ugotovili smo, da poraba goriva na uro narašča s povečanjem hitrosti vožnje od 7 km/h do 13 km/h. Poraba goriva na hektar je bila pri hitrostih obdelave tal 10 km/h in 13 km/h za 1,1 l/ha nižja kot pri hitrosti obdelave tal 7 km/h. Časovna storilnost (h/ha) je padala s povečanjem vozne hitrosti in je bila za 0,48 h/ha oziroma 37 % nižja pri hitrosti 13 km/h glede na hitrost 7 km/h. Z naraščanjem hitrosti vožnje je naraščala površinska storilnost (ha/h). Pri hitrosti obdelave tal 13 km/h je bila površinska storilnost za 0,45 ha/h oziroma za 58,8 % večja kot pri hitrosti obdelave tal 7 km/h. Pridelek zrnja je bil pri hitrosti 13 km/h manjši kot pri ostalih dveh hitrostih. Rezultati kažejo v prid višjih hitrosti 10 km/h in 13 km/h pri delu z diskasto brano.In the field trial in 2022, we determined the influence of driving speed (7 km/h, 10 km/h and 13 km/h) in soil preparation with a disc harrow on fuel consumption, efficiency and maize grain yield. The trial design were randomized blocks with three repetitions. The trial field was located at the location of Breška vas near Šentjernej. We used a mounted compacted disc harrow of working width 3m, manufactured by AGRO-MASZ, namely in two passes on the same place. We found out that fuel consumption per hour increases with an increase in driving speed from 7 km/h to 13 km/h. Fuel consumption per hectare was 1.1 l/ha lower at cultivation speeds of 10 km/h and 13 km/h than at tillage speeds of 7 km/h. Time efficiency (h/ha) decreased with increasing driving speed and was by 0.48 h/ha or 37% lower at 13 km/h compared to 7 km/h. Area efficiency (ha/h) increased with increasing driving speed. At a tillage speed of 13 km/h, the area efficiency was 0.45 ha/h or by 58.8% higher than at a tillage speed of 7 km/h. The grain yield was lower at the speed of 13 km/h than at the other two speeds. The results show in favor of higher speeds of 10 km/h and 13 km/h when working with a disc harrow