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2.1.4 Broadspectrum Soil Test Plus


P K Mg pH Ca Na Mn S B Fe Zn Cu Mo eCEC OM – SFI Compliant

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SKU: SST-1003 Categories: ,

This test measures pH, organic matter, major and micro nutrients essential for plant growth, other than Nitrogen.

The inclusion of organic matter means it is compliant with the Sustainable Farming Initiative (SFI).


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Extraction methods used:

Phosphorus (P): Olsen P extraction (0.5M NaHCO3)

Potassium (K), Magnesium (Mg), Calcium (Ca), Sodium (Na), Manganese (Mn): 1 M Ammonium Nitrate extraction

Sulphur (S): 0.016 M K2PO4

Boron (B): Hot water extraction

Iron (Fe), Zinc (Zn), Copper (Cu), Molybdenum (Mo): 0.5 M EDTA

pH: Extracted in deionised water

Organic Matter (OM): Loss of ignition at 400 °C

effective Cation Exchange Capacity (eCEC): Charge-equivalent sum of Ca, Mg, K & Na