This invention provides an artificial turf infill material including a microporous zeolite mineral having a selected gain size smaller than 5 mm and a porosity between 15% and 30%, where the microporous zeolite mineral has a grain size distribution as follows: 90% to 100% of the grains have a size in the range 0.4 mm to 5.0 mm.

A seedmat for growing plants, the seedmat comprises a biodegradable base layer, a seed layer and a biodegradable cover layer. The seed layer includes fertilizer granules or pellets that each have a coating, such as a polymer coating, that enables the pellets to absorb water and to slowly release that water, together with fertilizer.

The invention provides for method for forming an artificial turf infill material. The method comprises selecting from a zeolite ore a microporous zeolite mineral using a selection criterion on specific surface area of the mineral, thereby providing the artificial turf infill material.

The invention relates to a method for the construction and sustainable management of a hybrid turf sports ground, with management of a shallow water table in the structure of the sports ground, which comprises: a first step of constructing a structure (S) placed on a base (F), the structure comprising N stacked porous layers (Ci); a second step of installing turf on the surface of the top layer (Ci), the installation of the turf possibly being carried out by sowing; and, of the N layers, one hybrid layer (H) is constituted either (i) by a cultivation substrate that comprises synthetic reinforcing elements, or (ii) by a cultivation substrate that shares the space of the hybrid layer (H) with synthetic reinforcing elements.

A turf surface (80) comprising: (a) a reinforcing root-permeable mat (10); (b) a removable root-permeable backing (60) located beneath the reinforcing root-permeable mat (10); (c) a layer of growth media (42) located on the reinforcing root-permeable mat (10); and (d) natural grass plants (30) having roots (32) extending downwardly through the layer of growth media (42) and the reinforcing root-permeable mat (10) and the removable root-permeable backing (60); wherein, in use, prior to being laid at a destination site, the removable root-permeable backing (60) is separated from the reinforcing root-permeable mat (10), so that any roots (34) which engage with and extend through the removable root-permeable backing (60) are substantially removed from the turf surface (80).

A hybrid grass support structure (100, 200, 300, 400, 500, 600, 710) comprising a growth medium layer (102), a stone wool layer (104) positioned below the growth medium layer, and a plurality of synthetic grass fibers (106). The growth medium layer comprises a growth medium. The synthetic grass fibers are incorporated at least into the growth medium layer.

The invention provides for method for forming an artificial turf infill material. The method comprises selecting from a zeolite ore a microporous zeolite mineral using a selection criterion on specific surface area of the mineral, thereby providing the artificial turf infill material.

A hybrid grass support structure (100, 200, 300, 400, 500, 600, 710) comprising a growth medium layer (102), a stone wool layer (104) positioned below the growth medium layer, and a plurality of synthetic grass fibers (106). The growth medium layer comprises a growth medium. The synthetic grass fibers are incorporated at least into the growth medium layer.

There is provided a hybrid turf support for use with natural grass to form a stable hybrid turf system, the hybrid turf support comprising a knitted reticulated support; and a plurality of grass-like fibers extending upwardly from the knitted reticulated support, the grass-like fibers comprising groups of fibers extending upwardly at intervals.

The invention relates to a completely or partially compostable turf (202, 300) the turf being a completely or partially compostable artificial turf or a hybrid turf (202) comprising a completely or partially compostable hybrid turf support, the turf comprising a decomposition inhibitor, the decomposition inhibitor in the turf being adapted to lose its functionality or leave the turf until a defined period of time has elapsed.