EN 14984:2006

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Liming materials - Determination of product effect on soil pH - Soil incubation methodAmendements minéraux basiques - Détermination de l'effet d'un produit sur le pH d'un sol - Méthode par incubation du solCalcium-/Magnesium-Bodenverbesserungsmittel - Bestimmung des Produkteinflusses auf den Boden-pH-Wert - BodeninkubationsverfahrenTa slovenski standard je istoveten z:EN 14984:2006SIST EN 14984:2006en,fr,de65.080ICS:SLOVENSKI
STANDARDSIST EN 14984:200601-september-2006

EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 14984April 2006ICS 65.080 English VersionLiming materials - Determination of product effect on soil pH -Soil incubation methodAmendements minéraux basiques - Détermination de l'effetd'un produit sur le pH d'un sol - Méthode par incubation dusolCalcium-/Magnesium-Bodenverbesserungsmittel -Bestimmung des Produkteinflusses auf den Boden-pH-Wert - BodeninkubationsverfahrenThis European Standard was approved by CEN on 2 March 2006.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Central Secretariat or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania,Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2006 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 14984:2006: E

Variations to the test methods.25 Annex B (normative)
Determination of moisture at full soil water holding capacity.27 Bibliography.28

EN 12048, Solid fertilizers and liming materials — Determination of moisture content — Gravimetric method by drying at (105+2) °C (ISO 8190:1992 modified) EN 12049, Solid fertilizers and liming materials — Determination of moisture content — Gravimetric method by drying under reduced pressure (ISO 8189:1992 modified) EN 12945, Liming materials — Determination of neutralizing value — Titrimetric methods EN 12948, Liming materials - Determination of size distribution by dry and wet sieving EN 13040, Soil improvers and growing media — Sample preparation for chemical and physical tests, determination of dry matter content, moisture content and laboratory compacted bulk density EN ISO 3696, Water for analytical laboratory use — Specification and test methods (ISO 3696:1987) ISO 3310-1, Test sieves — Technical requirements and testing — Part 1: Test sieves of metal wire cloth ISO 3310-2, Test sieves — Technical requirements and testing — Part 2: Test sieves of perforated metal plate ISO 10390:2005, Soil quality — Determination of pH ISO 11272, Soil quality — Determination of dry bulk density
ISO 11277, Soil quality — Determination of particle size distribution in mineral soil material — Method by sieving and sedimentation ISO 11465, Soil quality — Determination of dry matter and water content on a mass basis — Gravimetric method ISO 14235, Soil quality — Determination of organic carbon by sulfochromic oxidation

NOTE In this document, efficiency is calculated as mentioned in 6.5.2. 3.2 internal peak values approach crediting fine fractions of a product or other highly reactive materials for 100 % efficiency in soil when reaching maximum pH value NOTE 1 This efficiency is maintained even if pH later drops due to soil microbial counteraction (acidification). NOTE 2 For further clarification see Figure 1 and Figure 2.
Key
no liming material
different products X weeks of incubation Y soil pH Figure 1 — Soil pH versus weeks of soil incubation
1) No international buffered method is available at pH = 7. As soon as an International Standard is available for cation exchange capacity buffered at pH = 7, it will replace the NF X 31-130.

Key
no liming material
different products X weeks of incubation Y efficiency in percent Figure 2 — Efficiency versus weeks of soil incubation
3.3 liming index ratio of the improvement in soil pH due to the product under test to that achieved using the reference liming material NOTE The liming index, LIx is an indicator given by the following formula: pH4) - (pH3pH2) - pH1(x=LI where LI
is the liming index pH1
is the pH of the soil with tested product after time x pH2
is the pH of the soil alone after time x pH3
is the pH of the soil with the reference liming material after time x pH4
is the pH of the soil alone after time x time x is the length of time of the incubation test 4 Principle 4.1 General Incorporation of a standardized amount of liming material or material claimed to have a liming effect into a reference soil or range of defined soils. Incubation of these soils under controlled climatic conditions for a defined period. Checking the buffer capacity of the soil with a reference liming material and measuring the changes in soil pH.

5.1.3 Water, conforming to EN ISO 3696, grade 3 5.2 Apparatus 5.2.1 Temperature-controlled room, capable of being maintained at (20 ± 2) °C 5.2.2 pH meter, capable of being read to the nearest 0,01 unit 5.2.3 Beakers, capacity 200 ml 5.2.4 Pots, of inert material with respect to soil, 50 mm to 200 mm diameter, capacity according to Table 1 5.2.5 Volumetric spoons, 20 ml

Determine the dry matter content of the soil in accordance with ISO 11465. It shall be used to adjust the mass fraction of soil in Table 1 to determine field water capacity in 5.4.3. Determine the smallest aperture size sieve from the range 1 mm, 2 mm, 4 mm and 6,3 mm that all the sample will pass. For mineral products use the sample as received. For organic products use the sample as received, but after homogenization, unless it contains coarse particles (equivalent spherical diameter greater than 1 mm). If the sample contains coarse particles, prepare it in accordance with EN 13040 so that all the particles will pass a 1-mm aperture size sieve. Determine in that case the fineness of the product. 5.4 Procedure 5.4.1 Preparation of the standard soil Dry the soil to constant mass at a temperature below 40°C, sieve on a 2 mm aperture size sieve (5.2.9) and use the soil that passes the sieve. Measure the initial pH of the standard soil in a settling suspension of water after 16 h in accordance with ISO 10390:2005, 7.1.3, 7.2 and 7.3 and record it. 5.4.2 Test portions Weigh, to the nearest 0,001 g, two test portions each of the mass specified in Table 1. At the same time, weigh, to the nearest 0,001 g, two portions of reference liming material (4.1.2) of the same mass as the test portions. NOTE The portion of reference liming material is equivalent to 2 250 units of neutralizing value per hectare, on the basis of 3 000 t of dried soil per hectare, and in the standard soil it will raise the pH by
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