Committee:
GT 1 Soil improvers and growing media
GT 2 Agricultura ecológica
GT 3 Plant biostimulants and agricultural micro-organisms
ISO/TC 134 Fertilizers, soil conditioners and beneficial substances
CEN/TC 223 Soil improvers and growing media
CEN/TC 260 Fertilizers and liming materials
CEN/TC 455 Plant Biostimulants
Standards developed by the committee: CTN 142: 379
Status: VIGENTE / 2025-11-26
Plant biostimulants - Determination of Rhizobium spp.
Plant biostimulants - Determination of the yeast and mould content
Plant biostimulants - Determination of the pH for liquid microbial plant biostimulants/pH in microbial products - Determination of pH
Plant biostimulants - Determination of the anaerobic plate count
Plant biostimulants - Claims - Part 1: General principles
Plant biostimulants - Claims - Part 2: Nutrient use efficiency resulting from the use of a plant biostimulant
Plant biostimulants - Claims - Part 3: Tolerance to abiotic stress resulting from the use of a plant biostimulant
Plant biostimulants - Claims - Part 4: Determination of quality traits resulting from the use of a plant biostimulant
Plant biostimulants - Claims - Part 5: Determination of availability of confined nutrients in the soil or rhizosphere
Plant biostimulants - Sampling and sample preparation - Part 1: Sampling
Plant biostimulants - Sampling and sample preparation - Part 2: Sample preparation
Plant biostimulants - Preparation of sample for microbial analysis
Plant biostimulants - Terminology
Status: VIGENTE / 2025-11-22
Liming materials - Determination of magnesium content - Atomic absorption spectrometric method.
Liming materials - Determination of neutralizing value - Titrimetric methods
FERTILIZERS - DETERMINATION OF FLOW RATE.
Status: VIGENTE / 2025-11-12
Fertilizers, liming materials and inhibitors - Sampling and sample preparation - Part 1: General sampling provisions
Fertilizers, liming materials and inhibitors - Sampling and sample preparation - Part 2: General sample preparation provisions
Fertilizers, liming materials and inhibitors - Sampling and sample preparation - Part 3: Sampling of static heaps
Status: VIGENTE / 2025-06-05
Carbonate liming materials - Determination of reactivity - Automatic titration method with citric acid
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