Global Soil Partnership
Standard Operating Procedures (SOPs)
Standard operating procedure for boron determination in soil: Hot water extraction
Standard operating procedure for soil microbial biomass (carbon): chloroform fumigation-extraction method
Template for reporting GLOSOLAN SOPs
SOP handling and preparation of soil samples for chemical and physical analyses
SOP on soil pH determination
SOP on soil total carbon by Dumas dry combustion method
SOP Walkley-Black method – titration and colorimetric method
Soil organic carbon – Tyurin spectrophotometric method
SOP Calcium carbonate equivalent - Volumetric calcimeter method
SOP Calcium carbonate equivalent - Titrimetric method
SOP on soil available P - Bray I method
SOP on soil available P - Bray II method
SOP on soil available P - Mehlich I method
SOP on soil available P - Olsen method
SOP on exchangeable cations and CEC
- EN: https://www.fao.org/3/cc1200en/cc1200en.pdf
Soil total nitrogen – Dumas dry combustion method
Soil Nitrogen – Kjeldahl method
SOP for soil available micronutrients (Cu, Fe, Mn, Zn) and heavy metals (Ni, Pb, Cd) DTPA extraction method
SOP on Soil Respiration Rate
SOP for soil moisture content by gravimetric method
SOP for quasi total elements in soil by acid digestion, including heavy metals
Soil Electrical Conductivity (soil/water, 1:5)
Saturated soil paste extract
Guidelines for Quality Management in Soil and Plant Laboratories. (FAO Soils Bulletin - 74)
Basic guidelines on how to produce a sample for internal quality control
Basic guidelines on how to produce a soil sample for proficiency testing
General instructions on how to produce a sample for the GLOSOLAN PT
