000K utf8 1100 $c2023 1500 eng 2050 urn:nbn:de:gbv:8:3-2023-00311-3 2051 10.3390/agriculture13040833 3000 Ramm, Sebastian 3010 Hartung, Eberhard 3010 Hasler, Mario 3010 Reckleben, Yves 4000 Single-Pass Grain Corn Harvest and Stubble Shredding$dPerformance of Three Corn Header Configurations as Effected by Harvesting Speed and Cutting Height [Ramm, Sebastian] 4209 This study aims to evaluate the efficiency of a new type of corn header equipped with flail knives that shreds corn stubble close to the ground. A field trial was carried out to quantify the influence of the shredding tool design (flail knives, standard knives, horizontal choppers disengaged), harvesting speed (1.5, 3.0, 4.5, 6.0 km/h) and cutting height (approx. 20 cm variation, 4 levels) on the power consumption of the corn header, engine load and fuel consumption of the combine harvester. The regression analyses revealed that modifications of the shredding tool assembly have significant effects on the parameters of the functional relationships. The power consumption of the flail knives configuration was 15 kW/row unit at 6 km/h at the lowest cutting height setting, making it compatible with most current combine harvester models. The additional power demand and fuel consumption that arise when switching to the new shredding tool design (flail knives) show a wide range, depending on the initial situation. Compared to the standard knives at 6 km/h, the additional power consumption was 3.6–5.5 kW/row unit and the additional fuel consumption was 2.6–3.9 L/ha. Compared to the configuration with disengaged horizontal choppers, it was 5.3–6.6 kW/row unit and 3.9–5.1 L/ha, respectively. At 90% engine load the additional power requirement was 1.6–3.1 kW/row unit and the additional fuel consumption was 2.9–5.6 L/ha compared to the standard knives configuration and 2.6–3.6 kW/row unit and 5.6–7.2 L/ha respectively, compared to the configuration with disengaged horizontal choppers. 4950 https://doi.org/10.3390/agriculture13040833$xR$3Volltext$534 4950 https://nbn-resolving.org/urn:nbn:de:gbv:8:3-2023-00311-3$xR$3Volltext$534 4961 https://macau.uni-kiel.de/receive/macau_mods_00003630 5051 333.7 5051 580 5550 combine harvester 5550 corn harvest 5550 corn header 5550 corn residue 5550 corn stubble 5550 European corn borer 5550 stubble shredding