Autumn 2023 EN

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ENGLISH ISSUE BIOGAS JOURNAL | AUTUMN_2023 Accumulated wheat after no-till sowing into a harvested maize field. On the day of sowing, a knife roller ran at the front of the tractor to control the maize borer. The mulch layer of the previous crop, winter wheat, can be seen under the rapeseed plants, which are already well developed by mid-October. Direct seeding machine enables new sowing variants The technical details and the results of the demonstration impressed the farm manager. At the turn of 2018/19, the agricultural company ordered a Novag T- ForcePlus 650 with a working width of 6 meters and 24 T-SlotPlus seeding units with a row spacing of 25 cm, for a price of 180,000 euros at that time. For a row spacing of 50 cm, every second plow unit is deactivated, and for a spacing of 75 cm, two adjacent units are turned off. The 12-ton heavy Novag is pulled by a 370 horsepower John Deere 8370 R. During no-till seeding of cereals into corn stubble, a front disc roller is operated on this tractor. It bends, crushes, and shreds the stumps of harvested corn plants to prevent overwintering of the corn borer. After the silage corn harvest, the field is reseeded in a single operation. The thickness of the organic matter layer practically has no effect on the pressure gradually exerted on the seeding units and, consequently, on the cutting disc located “Once you start no-till farming and immerse yourself in the different sowing variations, you want to keep trying more” Christian Rohne 6 cm below the seeding blades. This has encouraged Rohne to experiment and try the option of dividing the 5,400-liter capacity of the seeding machine’s hopper into up to four individual tanks for seed and fertilizer. Both can be placed in the soil using a hydraulic dosing system through the two individually height-adjustable angled blades (T-SlotPlus seeding units) on each of the 12 units of the front and rear seeding rails. This allows for simultaneous application of two different crops, as well as fertilizer and slug pellets. Particularly in no-till farming systems, targeted starter fertilization prevents nitrogen deficiency during the early growth stages. Reason: The conversion of organic substances into plant-available nutrients takes time, especially at low temperatures in spring. “Once you start no-till farming and immerse yourself in the different sowing variations, you want to keep trying more,” says Rohne. As an example, he mentions intercropping field beans, peas, and lupins with rapeseed, as well as the introducing sunflower crops, which have become quite profit- 22
BIOGAS JOURNAL | AUTUMN_2023 ENGLISH ISSUE able, on particularly light soils that otherwise only allow for the economic cultivation of maize and rye. “Furthermore, I can concentrate more on the agronomic advantages when designing the crop rotation and don’t have to consider any organizational processes,” emphasizes the farmer. For example, it is common practice to cultivate winter barley as a preceding crop before winter rapeseed, simply to have enough time to control volunteer grains. This aspect is no longer relevant. Winter wheat can now also act as a preceding crop. Immediately after the harvest, rapeseed can be sown into the stubble, which suppresses the germination of volunteer grains through its rapid canopy development. Rohne demonstrates the success of this approach in a rapeseed field that was established five days after the winter wheat harvest using the Novag machine. He pushes some of the well-developed plants apart with his hands to reveal a thick straw mat underneath. The impending ban on total herbicides is a cause for concern to the operations manager. Glyphosate is usually indispensable for promoting the main crop, especially on larger farm areas and because of the increasingly mild winters. “In the discussion, it is often overlooked that, for example, when using glyphosate in no-till farming of grain in autumn, I don’t have to apply any herbicide,” says Rohne, who hopes Farmer Christian Rohne is satisfied with the pre-winter development of the winter oilseed rape that is sown straight after the grain. In the background, the satellite combined heat and power plant (CHP) can be seen. Just Premium Ultra Premium Efficiency Submersible mixer GTWSB 206-E and NEW: GTWSI-EX 206-E · With energy efficiency motor: efficiency > 96% · GTWSI-EX 206-E for EX zones 1 and 2 · Maximum efficiency even at low speeds · Corresponds to efficiency class IE5 · Enormous energy savings and longer service lives · Approved up to 65°C substrate temperature Franz Eisele u. Söhne GmbH & Co. KG Hauptstr. 2-4 · D-72488 Sigmaringen · Phone +49 7571 109-0 www.eisele.de 23 Knowledge in motion
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Page 3 and 4: Biogas Journal | AUTUMN_2023 EDITOR
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Page 7 and 8: Advancing Sustainable Agriculture t
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Page 27 and 28: PHOTOGRAPHS: JOHN DEERE Fertilizer
Page 59 and 60: FOR POWER BIOGAS JOURNAL | AUTUMN_2
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Autumn 2023 EN

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