Coulters

Coulters are castoring disc attachments fitted in front of the shank to assist pasture renovation and cultivation where surface cover is present. By opening the surface ahead of the shank, coulters help maintain the Yeomans philosophy of minimal soil profile disturbance, allowing the shank to lift and loosen the soil below while the surface remains comparatively intact. This makes coulters particularly suitable for pasture renovation, oversowing, and applications where surface structure is to be preserved rather than aggressively cultivated.

Coulters are recommended in:

  • Densely matted pastures where grass roots spread laterally near the surface rather than penetrating deeply.
  • Old or compacted grazing paddocks with a tight grass mat
  • Irrigated or high‑rainfall pastures where surface root density is high
  • Pastures with vine‑type or surface‑creeping plants, where coulters prevent material building up on the shank and frame
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Available Range

400mm (16″) Coulters Suits 22″ Shanks Fluted Design
450mm (18″) Coulters Suits 26″ Shanks Fluted Design
560mm (22″) Coulters Suits 31″ Shanks Plain Disk Design
660mm (26″) Coulters Suits Sugar Cane Plows Plain Disk Design
760mm (30″) Coulters Suits Sugar Cane Plows Plain Disk Design
FEATURES

  • Standard Coulters are available in 400mm (16″) 450mm (18″) or 660mm (22″)
  • Heavy Duty Jungle Coulters suited to sugarcane trash are available in 660mm (26″) and 760mm (30″)
  • Coulters can be retro-fitted onto most Yeoman Plow frames.

NOTE

  • It is not recommended to run coulters in rocky soils which may damage the discs.

In the first photo, the left 3 coulters have been disengaged while the 2 on the right are in their working position. It highlights the advantages of running coulters in paddocks with certain groundcover. 

  • Yeomans cultivation contrast sub soil aeration ground rejuvenation , improvement of soil and hummus, keyline plow - fitted with coulters
    Coulters Vs No Coulters Comparison