In search of new ideas for natural grass surfaces, Growing Green Grass visited JeffCo Schools Lakewood Memorial Stadium last week in Denver, CO. The Lakewood Memorial field features a new version of synthetic reinforcement for natural grass called XtraGrass. The field is a RPR/ HGT seeded field, and has had 60 soccer matches played in 60 days. The condition of the field was fantastic. Great work by Sports Field Manager Chris Gray and team at JeffCo Schools! Thanks Chris for having us!
What is XtraGrass:
XtraGrass is essentially synthetic turf that is infilled with sand and grass instead of rubber, sand, cork, etc. Once XtraGrass is installed, the carpet “backing” begins to biodegrade and the natural grass roots through into the soil below.
How Does It Work?
The synthetic fibers coming up through the sand protect the crown of the grass plants. When a player stops, plants, turns, or pushes off, the synthetic fibers assist in footing and provide reinforcement to reduce shear and divots. Many of the 60 matches at Lakewood Memorial have been played in the rain, and absolutely no divots or tears were evident. Especially telling as the field was seeded only in late June and opened in late August. When the field begins to wear, the synthetic fibers provide continued stability and supply a green cast to the field. XtraGrass on its own without sand and grass infill achieves a FIFA 1-star rating.
How Is It Different?
The initial question that comes to mind is “how is XtraGrass different”? Different than SportGrass in the 90’s, different than the product distributed by Motz currently, different than even Desso’s GrassMaster. Those are all questions that have to be answered by the producers of each of those products. But certainly it seems that XtraGrass could be just as its advertised.. Different. The biodegradable backing on the field at Lakewood is showing signs of break down, and roots are starting to push through into the native soil below. And as mentioned, absolutely no divoting was present on the surface of the field
Maintenance of an XtraGrass field is relatively similar to any other high traffic grass field. Lakewood Memorial is not a big budget field; rather Mr. Gray is on a small budget with challenges that most all field managers can relate to.
In regards to specific XtraGrass maintenance, regular aeration with solid tines/ deep tines to keep the field de-compacted is important. Core aeration is not possible because the backing will not go through the tines, but the top layer is sand and the grass is grown in from seed so there is no organic layer need to be opened up w/ core aeration. Dry-Ject, Air2G2, and such seem possible. As is slicing or spiking to promote rooting through the backing.
The main maintenance key in the long term will be thatch management. Thatch/ organic build up will have to be limited to keep the synthetic fibers in play. If the build up gets above the fibers, they will be useless. Regular, light verticutting and yearly to bi-yearly Universe® fraze mowing will be required. The Universe® rotor for the KORO Field Topmaker was originally invented to clean organic from Desso Grassmaster to avoid this very thing, so it is ideal for XtraGrass. Ultimately though, XtraGrass requires little special treatment than any other grass field
At initial introduction, XtraGrass seems to be exactly what it is advertised to be. A natural grass/ synthetic hybrid system is scary to many because of the failures of products in the past. But because those failures in the past are understood, it is possible for such a product to work in the present and future. The Lakewood Memorial field is a high traffic, low maintenance example of how XtraGrass could help high traffic fields, especially in cool season climates where stability is an issue. Sports field managers and users are in need of a bridge product between full synthetic and standard natural grass… XtraGrass very much could be that bridge.
We will continue to observe and update you… more to come!
See the XtraGrass website: http://www.xtragrass.com/en/