Description of the area: Problematic field, filled after gravel pit mining. The field is approx. 3 hectares, where cultivation is hindered due to a very water-rich cultivation layer. This means that the field's passability is very poor even with longer dry weather periods. The wet cultivation layer hinders passability, but not cultivation on the field, which looks fine. The soil type is clay. Soil category: JB5-6 The field has just been harvested, spring wheat with really good cultivation. Objective for the field: The field must be made roadworthy so that care is possible all year round

Date: 16. August 2025

Full subsoiling/ melioration being carried out.

Machine: T4
Tractor: Case Puma 240
During a spear test before starting, a hard layer of sediment is found just below the cultivation layer – approx. 25-30cm, probably of compressed clay, probably used as fill after gravel excavation.
Full subsoiling/ melioration in the longitudinal direction
Standard working depth (approx. 55cm)

Observation during operation:

The tractor has difficulty getting wheel grip due to the very moist cultivation layer.
2 of the machine's 4 tines are put in transport position, as the tractor cannot otherwise carry out the reclamation at the correct depth.
Spear test directly in the tine groove: unobstructed 70-80cm – this means we are under layer sedimentation, which should be perfect.
Spear test after melioration between tooth grooves: 30-50cm
The work was difficult due to the very greasy roadbed and large stone deposits (after finishing work, the spring bolt had broken 10 times).
We notice a transverse edge where the roadbed is particularly wet and decide to drive 3-4 passes across the edge when the longitudinal melioration is completed.

Date: 18. August 2025

Follow-up:

The field appears dry and homogeneous.
Spear test: between 30 and 80cm – deposited layer appears broken.
Overall the result looks satisfactory.

Feedback from the customer, Frede Mikkelsen:

"Yesterday we were able to drive on the wet spot without any problems" (spot = the transverse edge)

Date: 10. September 2025

Follow-up:
• After a heavy rain with about 20mm of precipitation, the field generally seems dry and passable.
• The previously wet areas are also now dry
 
Experimental Field 2

Date: August 18 - Experimental area a few days after subsoiling/ melioration

Experimental Field 2
Experimental Field 2

Date: 10. September - Experimental area approximately 4 weeks after subsoiling/ melioration.

Experimental Field 2
Experimental Field 2
Experimental Field 2
Experimental Field 2