Used in the construction of putting greens, a top dress, sports fields, as a preparation layer under instant lawn and for other turf applications.
A blend of Daltons Greenzone Sand and high quality New Zealand South Island Peat. Designed specifically for turf growth. It is manufactured to the strict guidelines of the United States Golf Association (USGA) Recommendations for a Method of Putting Green Construction (2004).
- Contributes to an even water table and growing conditions
- Meets USGA recommendations
- Weed free
- Low EC
- Amended sand with organic matter
- Amendments and nutrients can be added
- Turf Tech (seaweed amendment) can be incorporated or mixed into Rootzone Sand
- NuGreen Zeolite can be incorporated or mixed into Rootzone Sand.
Information is listed in the analysis below. Refer to Greenzone specifications for particle size.
Organic Matter Analysis Report - ASTM Test Method F1647 - Fired 2 hours at 360˚C
|Sample ID||Organic Matter Content %|
|Daltons Rootzone Mixture (15% Peat)||2.01|
Analysis results from Thomas Turf Services, Inc. Texas, USA.
Physical Measurements Report - ASTM Test Method F1815
|Sat. Hydraulic Conductivity||30cm Water Holding||Bulk Density||Particle Density||Porosity|
|2004 USGA Recommendations||≥6||35-55||15-25||15-30|
|Daltons Rootzone Mixture (15% Peat)||10.9||15.0||1.52||2.68||43.3||22.9||20.4|
Analysis results from Thomas Turf Services, Inc. Texas, USA
The particle size analysis of the Daltons Greenzone Sand (15% Peat) showed it to be free of gravel and to contain acceptable amounts of silt and clay. The Greenzone Sand contained 8.5% very coarse sand which is within the recommended maximum of 10%. The Greenzone Sand contained 39.5 - 41.1% coarse sand and 32.4 - 34.1% medium sand for an acceptable total of 73.5 - 73.6%. This total is above the USGA’s recommended minimum of 60%. The Greenzone sand contained an acceptable 10.1 - 10.8% fine sand which is within the recommended maximum of 20%. The Greenzone Sand contained an acceptable 4.7 - 4.9% very fine sand which is within the recommended maximum of 5%. The Greenzone Sand also contained an acceptable total of 7.1 - 7.9% of the particles in the very fine sand, plus silt and clay fractions which is within the recommended maximum of 10%. The Greenzone Sand had a D85 of 0.90mm and a D15 of 0.21mm. The sand particles were sub-angular to angular in shape with a low to medium degree of sphericity. The Greenzone Sand had a strongly acid pH of 5.2, was low in total salts and free of carbonates. Based on these results the Daltons Greenzone Sand (15% Peat) DOES MEET the USGA’s recommended particle size distribution for a root zone mixture.
The physical measurements of the Daltons Greenzone Sand (15% Peat) showed it to have an acceptable saturated hydraulic conductivity (infiltration rate) of 10.9 inches per hour which is above the USGA’s recommended minimum of 6 inches per hour. The Greenzone Sand retained 15% moisture at 30cm tension. The Greenzone Sand (15% Peat) had an acceptable bulk density of 1.52 g/cc and a slightly high particle density of 2.68 g/cc. The Greenzone Sand had an acceptable 43.3% total porosity, 22.9% capillary porosity and 20.4% air filled porosity. The Greenzone Sand had an organic matter content of 1.91 - 2.01% as measured by loss of weight upon ignition at 360˚C for 2 hours. This organic matter content is typical of a mixture containing approximately 18 - 20% peat moss by volume. Based on these results the Daltons Greenzone Sand (15% Peat) DOES MEET the USGA’s recommendations for physical measurements of a root zone mixture at a depth of 30cm (12 inches).