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US 6,266,921 B1Granted
Cell and cell tray for growing seedlings
AssigneeLannen Tehtaat Oyj
InventorAltti Keskilohko
Life of this patent
Estimating the term…
Abstract
Cultivation cell for seedlings and a tray formed from such cells, comprising apertures breaking the cell upper rims. Thereby growth disturbancies in roots growing close to the substrate surface are prevented. The tray comprises air channels, and growth of surface roots across the upper apertures from one cell to another is prevented by structural elements giving the tray rigidity.
Claims1
A tray of cells for the cultivation of seedlings, said tray comprising:
- a plurality of cells, each of said plurality of cells having side walls and a plurality of apertures therein for inducing air pruning of roots, at least some of said apertures extending to an upper edge of said cell and breaking the upper edge thereof;
- a plurality of channels disposed between said plurality of cells to allow for a vertical flow of air, at least some of said apertures in said side walls opening into said channels,
- wherein at least a part of said channels between said cells is divided by structural elements for preventing root growth from one of said plurality of cells to another of said plurality of cells, said structural elements being ribs having a cross-formed horizontal section.
Dependencies are inferred from the claim text.