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Front subsoiler FL

DUTZI FL – Deep loosening without soil mixing.

Soils that are consistently loosened and aerated allow for high water infiltration.

The DUTZI front subsoiler uses narrow, steeply angled tines that break up the soil in a funnel-shaped pattern at the base of the compaction layer. Leading disc coulters pre-cut the soil so that the cultivator tines can penetrate cleanly without, for example, tearing out clods or mixing the soil layers.

The resulting cracks increase the space available for roots, boost the field’s usable capacity, and stimulate soil life. Waterlogging is prevented, water penetrates deeper, and remains available to the roots. The FL is the foundation of the DUTZI OnePass system and can be optimally combined with the KR and a seed drill. It can also be used with rotary harrows, with or without a mounted seed drill, or other comparable rear-mounted implements.

Small tools – big impact

The FL’s loosening tines are intentionally kept narrow. They move less material and require less traction than wide shares. The key factor is the steep angle of the tines, which allows cracks to form when the compaction layer breaks. Over the following days, these cracks penetrate deeper and deeper into the soil, loosening it down to deep layers.

This method naturally prevents the formation of smear layers that can occur when using delta shares if the soil beneath the plow pan is moist. The optimal working depth for the FL front cultivator’s tools is “a hand’s breadth into the compaction layer,” typically between 25 and 40 cm—deep enough to compress the plow pan until it breaks, which then allows for the formation of deep hairline cracks.

Pre-harvest disc coulters

The leading disc coulters lightly slit the soil, creating a precise guide track for the following implements. Crop residues are cleanly severed, and the surface remains largely undisturbed. The crucial hairline cracks form "below the surface."

This technique ensures clean results under varying soil conditions and with different amounts of crop residue.

Compatibility within the OnePass system

The front subsoiler is perfectly complemented by the DUTZI KR. Together, they form a OnePass soil cultivation system: The FL cultivates deeply, the KR crumbles the surface, the roller reconsolidates the soil, and the seed drill sows—all in a single pass.

This combination saves labor time, reduces the number of passes, lowers fuel consumption, and protects the soil. Aeration of the soil activates soil life. When crop residues are incorporated into the topsoil, they nourish the soil life. This builds up humus and absorbs CO2. This positive cycle is at the heart of the DUTZI philosophy.

Use in grassland

The front subsoiler also works well in grassland. When driven slowly and set to a shallow depth, it aerates the soil without damaging the turf. Cultivation promotes root development, improves water absorption, and prevents waterlogging without the need for reseeding or repair.

Air and water are essential for soil health—the FL provides both.



Technical specifications

Model FL 2500 FL 3000 FL 4000
Working width 250 cm 320 cm 440 cm
Transport width 203 cm 265 cm 386 cm
Loosening tines, pcs. 4 5 7
Working depth of loosening tines up to 60 cm 60 cm 60 cm
Tine spacing 61 cm 61 cm 61 cm
Disc coulters, pcs. 4 5 7
Tractor-mounted KAT II / III N II / III N II / III N
Tractor power requirement from kW/HP 80 / 110 hp 110 / 150 hp 145 / 200 hp
Weight from 890 kg 1,070 kg 1,350 kg

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