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Item 11. Plenary Discussion and Decision Making

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The II meeting of the Global Soil Laboratory Network (GLOSOLAN), 28 - 30 November 2018, FAO HQ, Rome, Italy
Lucrezia Caon, GSP, FAO

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Item 11. Plenary Discussion and Decision Making

  1. 1. Item 11: Plenary Discussion on SOPs
  2. 2. Objective of the SOPs • Need to provide a definition – link to GLOSOLAN Terminology
  3. 3. - How many SOPs are we going to develop under GLOSOLAN? - Who to develop them? - How to manage SOPs developed at the regional level in GLOSOLAN? - How to work on harmonization? - How to work with new technologies like spectroscopy? - Role of ISO - Work plan development Core questions to be answered:
  4. 4. Are we going to develop our own SOPs? Potential role of ISO? • We use the approach by SEALNET and LATSOLAN: review SOPs in use in the countries and harmonize them at the global level • We ensure that GLOSOLAN SOPs consistent with those that are already published by ISO. How? By asking laboratories using ISO methods or contributing to the development of ISO methods to review GLOSOLAN SOPs. • Validate GLOSOLAN SOPs through the ring test. • Establishment of a Technical Working Group for SOPs development/review/validation (link to ring test results analysis). • We will identify a pool of experts in each region to supervise the implementation of GLP and give trainings.
  5. 5. What SOPs are we going to develop? Including soil parameters prioritization! Need to identify the soil parameters to develop SOPs on. Options for selection: 1. Global priorities, e.g. mapping and international reporting The GSP Secretariat is planning to develop three global maps in 2019: - Global Map on Soil Erosion (link the Global Symposium on Soil Erosion) - Global Map on Soil Salinity - Global Map on the Soil Organic Carbon Sequestration Potential
  6. 6. What SOPs are we going to develop? Including soil parameters prioritization! Need to identify the soil parameters to develop SOPs on. Options for selection: 1. Global priorities, e.g. mapping and international reporting 2. Global Soil Information System (GLOSIS) and SoilSTAT (link to the work of other GSP Pillars – especially Pillar 4) Top parameters GLOSIS would work on: Physical parameters: - Available water capacity - Bulk density - Clay, sand, silt (texture) - Coarse fragments Chemical parameters: - Electrical Conductivity (EC) - Nitrogen - pH - Potassium (K) - Organic carbon
  7. 7. What SOPs are we going to develop? Including soil parameters prioritization! Need to identify the soil parameters to develop SOPs on. Options for selection: 1. Global priorities, e.g. mapping and international reporting 2. GLOSIS and SoilSTAT (link to the work of other GSP Pillars) 3. Results of the 1st GLOSOLAN Survey
  8. 8. What SOPs are we going to develop? Including soil parameters prioritization! Proposal to find a compromise to contribute to global initiatives including GLOSIS and SoilSTAT, and use data obtained through the online survey.
  9. 9. What SOPs are we going to develop? Including soil parameters prioritization! Decision: work on directly measured soil parameters. Priority ones: 1. Sample pre-treatment 2. Moisture content 3. Organic and inorganic carbon 4. Bulk density 5. Texture and coarse fraction 6. pH in water, CaCl2 and KCl 7. Electrical Conductivity (EC) 8. Total Nitrogen 9. Available Phosphorous 10. CEC and exchangeable cations 11. Total trace and major elements 12. Extractable micro-nutrients (Zn, Fe, Mn, Cu, B) 13. Chlorine and Sulphur
  10. 10. How many SOPs per each parameter to develop? Parameter #SOP Note Sample preparation 1 Moisture content 1 Organic C 2 Walkly Black (no in USA) Dry-combustion In USA: Measure total C and then subtract inorganic C to get organic C Inorganic C 1 CaCO3 equivalent Bulk density 1 Texture and coarse fraction 2 Pipet method Hydrometer pH in water, CaCl2 and KCl 1 SEALNET and LATSOLAN approach (countries’ survey on the methods)
  11. 11. How many SOPs per each parameter to develop? Parameter #SOP Note Electrical Conductivity (EC) 2 1. Saturated paste 2. SEALNET and LATSOLAN approach (countries’ survey on the methods) Total Nitrogen 2 Kjeldahl Combustion Available Phosphorus 3 Olsen Bray I/II Mehlich III Ammonium lactate CEC and exchangeable cations 2 plus Ammonium acetate/chloride (2) Cobalt Hexamine and BaCl2 to agree on following a survey among countries
  12. 12. How many SOPs per each parameter to develop? Parameter #SOP Note Total trace and major elements 1 Total digestion method (acqua regia + HF) Quasi-total trace and major elements 1 Partial digestion method (acqua regia) Extractable micro-nutrients (Zn, Fe, Mn, Cu, B) 3 DTPA EDTA Mehlich III Extractable micro-nutrients (B) 1 Hot water/CaCl2 Chlorine 1 Mohr Sulphur 1 Barium Chloride
  13. 13. Who to develop SOPs and manage SOPs developed at the regional level in GLOSOLAN? Harmonization of SOPs developed by the regions is an issue only in 2018. • RESOLAN to collect inputs on methods and SOPs used by each country • GLOSOLAN to process the collected information – role of the Technical Working Group in GLOSOLAN.
  14. 14. Role of the Technical Working Group • Analyse the information collected by the region, • Formulate the SOPs and modify them according to ring test results when necessary • Regional groups of experts supervising the implementation of GLP and giving trainings, will also support in implementing the SOPs
  15. 15. SOP Template • Our SOPs will be freely available • Copyright with FAO-GLOSOLAN • Authors to be acknowledged? YES in the internal document to track this down and at official GLOSOLAN reports. In the public facing doc: • Prepared by GLOSOLAN Technical Working Group XXXX • Reviewed on XX/XX/XXXX • Approved on XX/XX/XXXX at GLOSOLAN X meeting
  16. 16. Harmonization Need to provide a definition of it To be done when agreeing on the GLOSOLAN’s terminology In standards, harmonization is the process of minimizing redundant or conflicting standards which may have evolved independently. The goal is to find commonalities, identify critical requirements that need to be retained, and provide a common standard. Harmonization of what? - Data produced using different methods - When GLOSOLAN SOPs cannot be applied Potential: - Harmonize historical databases
  17. 17. Harmonization How? - Development of conversion factors. By who? And How? 1. Review the databases of WEPAL and ASPAC (contracting of a student?) 2. National institutes to provide conversion factor (comparison of data obtained using GLOSOLAN SOPs with their national ones) when databases are not available.
  18. 18. How to work with new technologies like spectroscopy (MIR, NIR)? Proposal: • Launch of regional surveys to identify those laboratories working on spectroscopy • Establishment of a dedicated working group • Spectroscopy to become a SOP for the different soil parameters. 2 SOPs to be developed: MIR and NIR
  19. 19. Five years work plan development Year SOPs to be developed Notes 2018 2019 2020 2021 2022 After 2022
  20. 20. Thanks for your inputs

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