Plant biostimulants - Determination of microorganisms' concentration

This document specifies general rules to determine the concentration of microorganisms present in plant biostimulant products.
The method is applicable to microbial plant biostimulants for verifying that the concentration of microorganisms does not exceed the respective limits outlined in the EU Regulation on Fertilising Products [1].
This horizontal method might not be appropriate in every detail for certain products. In this case, it is necessary to refer to the methodology of specific determination and quantification of the microorganisms.

Pflanzen-Biostimulanzien - Bestimmung der Konzentration von Mikroorganismen

Dieses Dokument legt allgemeine Regeln für die Bestimmung der Konzentration von Mikroorganismen in Biostimulansprodukten fest.
Das Verfahren ist auf mikrobielle Pflanzen-Biostimulanzien anwendbar, und zwar, um zu verifizieren, dass die Konzentration von Mikroorganismen die entsprechenden Grenzwerte der EU Düngeprodukte-Verordnung [1] nicht überschreitet.
Dieses horizontale Verfahren ist für bestimmte Produkte nicht unbedingt bis ins Detail geeignet. In diesem Fall ist es notwendig, auf die Methodik der spezifischen Bestimmung und Quantifizierung der Mikro-organismen zurückzugreifen.

Biostimulants des végétaux - Détermination de la concentration en microorganismes

Le présent document spécifie les règles générales pour déterminer la concentration en microorganismes présents dans les produits biostimulants des végétaux.
La méthode est applicable aux biostimulants des végétaux microbiens pour vérifier que la concentration en microorganismes ne dépasse pas les limites correspondantes indiquées dans le Règlement UE sur les fertilisants [1].
Cette méthode horizontale pourrait ne pas être appropriée dans chaque détail pour certains produits. Dans ce cas, il est nécessaire de se référer à la méthodologie de détermination et de quantification spécifique des microorganismes.

Rastlinski biostimulanti - Določevanje koncentracije mikroorganizmov

Ta dokument je bil namenjen opredelitvi splošnih pravil za določanje koncentracije mikroorganizmov, prisotnih v rastlinskih biostimulantih.
Metoda se uporablja za mikrobne rastlinske biostimulante za preverjanje, da koncentracija mikroorganizmov ne presega ustreznih mejnih vrednosti, navedenih v Uredbi EU o sredstvih za gnojenje [1].
Ta vodoravna metoda v nekaterih podrobnostih morda ne bo primerna za nekatere izdelke. V tem primeru se je treba sklicevati na metodologijo specifičnega določanja in kvantifikacije mikroorganizmov.

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Standards Content (Sample)

SIST-TS CEN/TS 17714:2023
Rastlinski biostimulanti - Določevanje koncentracije mikroorganizmov
Plant biostimulants - Determination of microorganisms' concentration
Pflanzen-Biostimulanzien - Bestimmung der Konzentration von Mikroorganismen
Biostimulants des végétaux - Détermination de la concentration en microorganismes
Ta slovenski standard je istoveten z: CEN/TS 17714:2022
65.080 Gnojila Fertilizers
SIST-TS CEN/TS 17714:2023 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST-TS CEN/TS 17714:2023

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SIST-TS CEN/TS 17714:2023

CEN/TS 17714


March 2022
ICS 65.080
English Version

Plant biostimulants - Determination of microorganisms'
Biostimulants des végétaux - Détermination de la Pflanzen-Biostimulanzien - Bestimmung der
concentration en microorganismes Konzentration von Mikroorganismen
This Technical Specification (CEN/TS) was approved by CEN on 3 January 2022 for provisional application.

The period of validity of this CEN/TS is limited initially to three years. After two years the members of CEN will be requested to
submit their comments, particularly on the question whether the CEN/TS can be converted into a European Standard.

CEN members are required to announce the existence of this CEN/TS in the same way as for an EN and to make the CEN/TS
available promptly at national level in an appropriate form. It is permissible to keep conflicting national standards in force (in
parallel to the CEN/TS) until the final decision about the possible conversion of the CEN/TS into an EN is reached.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.



CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN/TS 17714:2022 E
worldwide for CEN national Members.

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SIST-TS CEN/TS 17714:2023
CEN/TS 17714:2022 (E)
Contents Page
European foreword . 3
Introduction . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Principe of the method . 7
5 Sampling . 7
6 Preparation of sample for microbial analysis . 7
7 Method for enumeration of microorganism . 7
7.1 General. 7
7.2 Enumeration using a solid media. 8
7.3 Enumeration and quantification using a liquid medium . 16
8 Expression of results . 18
9 Test report . 18
10 Quality assurance . 18
Bibliography .

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