HB HYBRID BOTTOMROOT INTERFACE SYSTEM

Controlled root pruning interface

Design the pause
before the branch.

The side wall stops circling. The bottom decides whether roots accumulate, dry abruptly, or reorganise into a denser lateral system.

See the interface ↓ Open the model
  • 01Geometrydirects the flow
  • 02Typarcontrols the pause
  • 03Climatesets the intensity

The biological sequence

One interface.
Five controlled moments.

The animation follows the complete cycle: approach, contact, moisture-buffered pause, local micro-drying and apex pruning. Lateral roots appear only after the tip is arrested at Typar.

  1. 01Root approachesThe apex grows toward the membrane.
  2. 02Typar contactMoisture softens the transition.
  3. 03Venturi dryingFocused airflow renews the boundary layer.
  4. 04Apex pruningThe active tip is arrested at the interface.
  5. 05Lateral responseBranching redistributes the root system.
Animated cross-section of roots reaching Typar above three mirrored pairs of Venturi tubes and an Air-Bag cavity
Root approach
Typar — transfer and timing layer Bottom — D1, D2 and D3 Venturi zones Air‑Bag — ventilated microclimate

Comparative tuning model

Tune the delay.
Keep the architecture.

Geometry creates the pathway. Typar and climate change how long the root remains in the contact zone before local drying triggers branching.

Physical format Choose the vessel geometry before tuning the interface.
Airflow mode
Selected vessel R108 Ø216 · h200 mm
D1 Centresoft adaptation D2 Transitionbalanced response D3 Peripherydecisive pruning
Bottom area366.4 cm² Typar area272.3 cm² Open ring94.2 cm² Typar Ø186 mm
Controlled delay 114min balanced adaptation
Drying index101
Branching response75%

SF20 and natural airflow create a measured drying window for continental conditions.