Particle size distribution of USGA rootzone mix Name
Fine gravel
3% fine gravel Coarse sand
Medium sand Fine sand
Very fine sand Silt
Clay Total fines
Consider straight sand
If a fairly coarse sand, or
sand/soil mix that drains well, dominates your existing rootzone/upper profile, then moving to
Sports Ground Contractors Ltd
straight sand is unlikely to be suitable. However, if you have a soil-based profile where drainage could be improved, and your existing topdressing is on the fine end of the recommended spectrum, then straight sand is, potentially, a good option. Provided the chosen sand is of the correct particle size range (not too coarse or with too many fines, silt and clay), compatible with your existing topdressing/rootzone and incorporated correctly, then there should not be any concerns with root breaks or overly droughty surfaces. An agronomist, supported by independent laboratory testing, should ideally verify compatibility.
Important points to note before making the change:
Particle Size Analysis - It is essential that the sand is chosen carefully, verified by laboratory testing to determine its particle size analysis. The STRI would be happy to check the suitability of sand for use.
Compatibility - If possible, it would be best to use the same sand as found in your existing topdressing. You could ask your supplier to drop the soil content so as to reduce the quantity of fine particles. The resultant material should be analysed for particle size
SPORTS TURF CONTRACTORS FTS Sportsturf Services Limited
Sportsground & Amenity Contractors Drainage, Construction, Renovation & Maintenance
Vertidraining, Hollow Coring, Overseeding, Draining, Gravel Banding, Field Top Maker, Deep Scarifying
Mobile: 07860 259692
Tel: 01284 735105 Email:
peter@buryturfcare.com www.buryturfcare.com
• Sports Pitch Construction • Earthworks • Maintenance • Drainage & Irrigation • Custom Grown Turf
• Install n Playball Turf Tiles 01400 251605
www.fine-turf.co.uk info@fine-turf.co.uk
Cricket Pitch Specialists
Unit 39, Centerprise House, New Greenham Park, Newbury Berkshire, RG19 6HW Tel. 0845 519 2729 Fax. 0700 349 6494 Mobile. 07768 696291
web.www.fts-sportsturf.co.uk email.info@
fts-sportsturf.co.uk
147
To advertise in this section contact
Particle Diameter Recommendation (by weight) 2.0-3.4mm
Very coarse sand 1.0-2.0mm (preferably none) 0.5-1.0mm
0.25-0.50mm
0.15-0.25mm 0.05-0.15mm
0.002-0.05mm
Very fine sand + silt + clay
Not more than 10% of the total particles in this range, including a maximum of
Minimum of 60% of the particles must fall in this range
Not more than 20% of the particles may fall within this range
Not more than 5% Not more than 5%
Less than 0.002mm Not more than 3% Less than or equal to 10% Grading curve for rootzone layer SPORTS TURF CONTRACTORS
Classifieds
Peter Britton on 01747 855335 email:
peter@pitchcare.com
distribution to check its suitability.
Consistent Use - Once the change to sand has been made, do not go back to using a sand/soil mix, otherwise drainage and root break problems could occur. If it is felt that more nutrient/moisture holding potential is required, then perhaps apply inorganic, diatomaceous earth ceramics such as Profile, Axis or Isolite CG. These need to be applied at a generous rate, e.g. 300g/m2
Alternatively, try seaweed meal at 75-100g/m2
once or twice a year.
Integrate old with new - Ensure that the new material is well integrated with the existing rootzone. The surface should be regularly aerated to work the new material into the soil profile to avoid creating a layer at the surface. Regular light sand dressings would be best, rather than one or two heavy dressings, as this may increase the risk of layering.
Further advice - The STRI’s agronomy team would be happy to give more advice specific to your site. STRI Laboratory Services are available for particle size analysis and other soil testing services. Contact: 01274 565131.
once a year.
D W Clark DRAINAGE LTD
SPECIALIST SPORTSTURF CONSTRUCTION & DRAINAGE CONTRACTORS • Gravel Banding • Sand Slitting
• Top Dressing • Renovation • Irrigation Unit 7, Brailes Industrial Estate, Winderton Lane, Lower Brailes Banbury, Oxfordshire OX15 5JW
Tel: 01608 685800 Fax: 01608 685801 email:
jim@dwclarkdrainageltd.co.uk Web:
www.dwclarkdrainageltd.co.uk
Quarry Hall Farm, Spring Bottom Lane Bletchingley, Surrey RH1 4QZ
T: 01883 340 969 F: 01883 346 533
E:
info@earthboundservices.co.uk W:
www.earthboundservices.co.uk
Earthbound Services specialise in the highest quality sports pitch construction, renovation and maintenance. A professional and friendly service based in the South East of England.
Advertising in this classified section costs as little as £200 a year. Telephone: 01747 855335
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