GLS – Grassland Subsoiler

100-250HP
2.3-2.8m
Upto 350mm

Improve Drainage and Soil Structure

Relieve Compaction While Preserving Grassland.

The Sumo Grassland Subsoiler (GLS) is designed to alleviate subsoil compaction by opening the sward and lifting the soil to improve drainage and airflow. Serrated rubber-mounted discs open the ground ahead of the low-disturbance leg, which lifts the soil to relieve compaction. A flat roller firms the ground, while its teeth aerate the sward, leaving grassland productive and resilient.

Best For: Relieving subsoil compaction in permanent grassland, Improving drainage and water infiltration and Supporting healthy root growth for productive pastures

Ideal Conditions: Heavy or compacted grassland soils, Fields prone to waterlogging or poor aeration and Farms adopting regenerative grazing or pasture management practices

Sumo Trio combination cultivator IMG_9785
Sumo Trio combination cultivator IMG_9785

Perfect for:

  • Increasing soil porosity and airflow
  • Promoting deeper rooting and stronger swards
  • Maintaining pasture structure while reducing compaction
  • Improving grazing conditions and long-term soil health

Available in Mounted Versions

With working widths from 2.3m to 2.8m and adjustable leg spacing, the GLS can be tailored to different soil types and grassland conditions.

See Sumo In Action

Contact your local dealer to arrange a demo on your farm.

Key Features:

  • Low-Disturbance Legs
    Lift and aerate the soil without excessive disruption.
  • Serrated Rubber-Mounted Discs
    Open the sward ahead of the leg for smoother penetration.
  • Flat Roller with Teeth
    Firms soil while aerating the sward for better drainage.
  • Heavy-Duty Frame
    Robust construction for consistent performance in tough soils.
  • Adjustable Leg Spacing
    Customise for different compaction levels and field sizes.
Mounted Trio without seeder

“The GLS has transformed our grassland. Water drains better, roots go deeper, and the sward stays intact — our pastures have never been healthier.”
Oliver James, Herefordshire Farmer

For farmers who want to relieve subsoil compaction, improve drainage, and aerate grassland while preserving the sward and maintaining long-term pasture productivity.

Agronomic Benefits:

  • Alleviates Compaction
    Opens subsoil without damaging the sward.
  • Improves Drainage
    Reduces waterlogging and surface pooling.
  • Enhances Root Growth
    Encourages deeper, healthier roots.
  • Supports Soil Life
    Minimal disturbance preserves earthworms and microbial networks.
  • Maintains Pasture Structure
    Leaves grassland intact for grazing or cutting.

The Trusted Choice for Farmers

Whether you’re breaking up compacted stubble ground, managing cover crops, or preparing seedbeds, the Sumo GLS delivers consistent, reliable performance that supports better soil health and long-term profitability.
Get in touch with your local dealer to arrange a demo or request more information.

Specifications

Product SpecificationGLS 3 A/RGLS 4 A/RGLS 5 A/R
CodeGLS3GLS4GLS5
Working Width2.3m2.3m2.8m
Transport Width2.50m2.50m2.90m
No. of Legs345
Leg Spacing833mm580mm580mm
No. of Discs345
Maximum Working Depth350mm350mm350mm
Maximum HP200hp220hp250hp
Weight1,490kg1,625kg1,875kg

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