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ISO 20978:2020PublishedLiming material — Determination of neutralizing value — Titrimetric methodsISO 21263:2017PublishedSlow-release fertilizers — Determination of the release of the nutrients — Method for coated fertilizersISO 22018:2021PublishedFertilizers, soil conditioners and beneficial substances — Determination of EDTA soluble phosphorus content in inorganic fertilizersISO 22145:2021PublishedFertilizers and soil conditioners — Mineral soil amendments — Determination of total calcium and magnesium contentISO 22146:2018PublishedCarbonate liming materials — Determination of reactivity — Automatic titration method with citric acidISO 22862:2021PublishedFertilizers and soil conditioners — Compound fertilizer — General requirementsISO 22887:2020PublishedDetermination of total sulfur in fertilizers by high temperature combustionISO 23381:2020PublishedDetermination of salt out (crystallization) temperature of liquid fertilizersISO 25475:2016PublishedFertilizers — Determination of ammoniacal nitrogenISO 25705:2016PublishedFertilizers — Determination of urea condensates using high-performance liquid chromatography (HPLC) — Isobutylidenediurea and crotonylidenediurea (method A) and methylen-urea oligomers (method B)ISO/FDIS 5314Under developmentFertilizers — Determination of ammoniacal nitrogen content — Titrimetric method after distillationISO/DIS 25300Under developmentSoil conditioners and beneficial substances — Determination of free amino acidsISO/DIS 25341Under developmentFertilizers, soil conditioners and beneficial substances — Determination of polyglutamic contentISO/DIS 37700-1Under developmentPlant biostimulants — Claims — Part 1: General principlesISO/DIS 37700-2Under developmentPlant biostimulants — Claims — Part 2: Nutrient use efficiency resulting from the use of a plant biostimulantISO/DIS 37700-3Under developmentPlant biostimulants — Claims — Part 3: Tolerance to abiotic stress resulting from the use of a plant biostimulantISO/DIS 37700-4Under developmentPlant biostimulants — Claims — Part 4: Determination of quality traits resulting from the use of a plant biostimulantISO/DIS 37700-5Under developmentPlant biostimulants — Claims — Part 5: Determination of availability of confined nutrients in the soil or rhizosphereISO/DIS 37701-1Under developmentPlant biostimulants — Determination of specific elements — Part 1: Digestion by aqua regia for subsequent determination of elementsISO/DIS 37701-2Under developmentPlant biostimulants — Determination of specific elements — Part 2: Determination of total content of Cd, Pb, Ni, As, Cr, Cu and ZnISO/DIS 37701-3Under developmentPlant biostimulants — Determination of specific elements — Part 3: Determination of mercuryISO/DIS 37702-1Under developmentPlant biostimulants — Sampling and sample preparation — Part 1: SamplingISO/DIS 37702-2Under developmentPlant biostimulants — Sampling and sample preparation — Part 2: Sample preparationISO 3944:1992WithdrawnFertilizers — Determination of bulk density (loose)ISO 3944:1980WithdrawnFertilizers — Determination of bulk density (loose)