Soils for Landscaping & Agriculture

Landscaping Soils

The complexities of soil science, the large number of different soil types that occur in nature combined with the blending processes producing soils intended for landscaping & garden use means that soils meeting the general requirements of AS4419 demonstrate a wide range of properties.
Groundswell’s ASPAC & NATA accredited laboratory facility offers the full suite of analysis detailed in AS4419.
AnalyteLiterature Reference
Bulk DensityAS4419 Appendix B
WettabilityAS4419 Appendix C
pHAS4419  Appendix D
Electrical ConductivityAS4419  Appendix D
AmmoniaAS4419  Appendix D
Available phosphorus ( Colwell )AS4419  Appendix D
Nitrogen drawdown indexAS4419 Appendix E
ToxicityAS4419 Appendix F
DispersibilityAS4419 Appendix G
PermeabilityAS4419 Appendix H
Presence of plant propagulesAS4419 Appendix J
Soil TextureAS4419 Appendix K
BioassayAS4419 Appendix I
Particle Sizing (0.002 to 20mm)AS4419 Tables 1, 3, 5, 6

Agricultural Soils

The complexities of soil science, the large number of different soil types that occur in nature combined with the blending processes producing soils intended for landscaping & garden use means that soils meeting the general requirements of AS4419 demonstrate a wide range of properties.
Groundswell’s ASPAC & NATA accredited laboratory facility offers the following soil analysis :
AnalyteLiterature Reference
Electrical Conductivity3A1
pH ( water )4A1
pH ( CaCl2, without stirring )4B1
pH ( CaCl2, with stirring )4B2
Chloride5A1
Organic Carbon (Walkley & Black)6A1
Organic Matter (LOI)6G1
Total nitrogen (Kjeldahl)7A1
Nitrate7B
Ammonia ( 2M KCl )7C1A
Total P (Kjeldahl)9A3B
Bicarbonate-extractable P (Colwell)9B
Olsen-extractable P (Olsen P )9C
Fluoride-extractable P (Bray 1-P)9E
Acid-extractable P (BSES P)9G1
Exchangeable cations (Ca, K, Mg, Na)15A1
Total Metals17B1
Bicarbonate-extractable K (Colwell)18A1
Mehlich 3 elements18F
ColourDPI Victoria
TextureAS4419 Appendix K

Note

Literature references apply to ‘Soil Chemical Methods – Australia’, Rayment & Lyons

Total Metals include : Al, As, B, Ca, Cd, Co, Cr, Cu, Fe, K, Mg, Mn, Mo, Na, Pb, Se, Zn

Mehlich 3 elements include : Ca, K, Mg, Na, S, Cu, Mn, Zn, B, Fe, Al