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Standard operating procedure for soil organic carbon. Walkley-Black method: titration and colorimetric method












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    Booklet
    Corporate general interest
    Standard operating procedure for soil organic carbon: Tyurin spectrophotometric method 2021
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    This protocol applies to the determination of the oxidizable organic carbon content in the soil. The organic carbon content is calculated from the amount of chromic ion (Cr3+) formed which is determined by the spectrophotometric method.
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    Standard Operating Procedure for soil calcium carbonate equivalent - titrimetric method 2020
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    GLOSOLAN is a Global Soil Laboratory Network which aims to harmonize soil analysis methods and data so that soil information is comparable and interpretable across laboratories, countries and regions. Evidence-based decisions are critical to the achievement of Sustainable Soil Management (SSM), food security and nutrition, and Agenda 2030 for Sustainable Development. While the quantity and quality of soil data are fundamental, soil information must also be harmonized and globally consistent to have impact. Standard operating procedures (SOPs) are sets of step-by-step written instructions that help lab staff to carry out routine operations by describing, in detail, how to perform a laboratory process or experiment safely and effectively. SOPs aim to achieve efficiency, quality of output and uniformity of performance, while reducing miscommunication and failure to comply with laboratory and international standards. The harmonization of laboratory standard operating procedures and methods is at the basis of harmonizing soil laboratory data.
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    Template for reporting the Global Soil Laboratory Network standard operating procedures 2020
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    Evidence-based decisions are central to the achievement of Sustainable Soil Management (SSM), which in turn is critical to the achievement food security and nutrition, and to the Agenda 2030. While the quantity and quality of soil data are fundamental, soil information must also be harmonized and globally consistent to have impact. Established in 2017, in the framework of the Global Soil Partnership’s Pillar 5, the Global Soil Laboratory Network (GLOSOLAN) facilitates networking and capacity development through cooperation and information sharing between soil laboratories with different levels of expertise. The development of Standard Operating Procedures (SOPs) is a key step toward the harmonization of soil laboratory methods and data. At the purpose of developing harmonized SOPs, the following template and related instructions of use was prepared.

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    Emissions due to agriculture
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    2021
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    The FAOSTAT emissions database is composed of several data domains covering the categories of the IPCC Agriculture, Forestry and Other Land Use (AFOLU) sector of the national GHG inventory. Energy use in agriculture is additionally included as relevant to emissions from agriculture as an economic production sector under the ISIC A statistical classification, though recognizing that, in terms of IPCC, they are instead part of the Energy sector of the national GHG inventory. FAO emissions estimates are available over the period 1961–2018 for agriculture production processes from crop and livestock activities. Land use emissions and removals are generally available only for the period 1990–2019. This analytical brief focuses on overall trends over the period 2000–2018.
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    Standard operating procedure for cation exchange capacity and exchangeable bases by 1N ammonium acetate, pH 7.0 method 2022
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    This procedure outlines the process for the determination of cation exchange capacity (CEC) and exchangeable bases (calcium, magnesium, potassium and sodium) in soil using 1N ammonium acetate at pH 7. The method gives an estimation of plant-available exchangeable bases.
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    FAO Strategy on Climate Change 2022–2031 2022
    The FAO Strategy on Climate Change 2022–2031 was endorsed by FAO Council in June 2022. This new strategy replaces the previous strategy from 2017 to better FAO's climate action with the Strategic Framework 2022-2031, and other FAO strategies that have been developed since then. The Strategy was elaborated following an inclusive process of consultation with FAO Members, FAO staff from headquarters and decentralized offices, as well as external partners. It articulates FAO's vision for agrifood systems by 2050, around three main pillars of action: at global and regional level, at country level, and at local level. The Strategy also encourages key guiding principles for action, such as science and innovation, inclusiveness, partnerships, and access to finance.