Plant biostimulants - Determination of mycorrhizal fungi

This document was developed to provide a horizontal method for enumeration and genera/species determination [1], [2], [3] of mycorrhizal fungi in plant biostimulants products in accordance with the EU Fertilising Products Regulation.

Pflanzen-Biostimulanzien - Bestimmung von Mykorrhizapilzen

Dieses Dokument wurde entwickelt, um ein horizontales Verfahren für die Zählung und die Bestimmung der Gattung/Spezies [1] [2] [3] von Mykorrhizapilzen in Produkten der Pflanzen Biostimulanzien in Übereinstimmung mit der EU Düngemittelverordnung bereitzustellen.

Biostimulants des végétaux - Détermination des champignons mycorhiziens

Le présent document a été élaboré pour fournir une méthode horizontale pour le dénombrement et la détermination du genre/de l’espèce [1], [2], [3] des champignons mycorhiziens dans les produits biostimulants des végétaux conformément au Règlement UE sur les fertilisants.

Rastlinski biostimulanti - Določanje mikoriznih gliv

Ta dokument zagotavlja vodoravno metodo za štetje in določanje rodov/vrst [1], [2], [3] mikoriznih gliv v rastlinskih biostimulantih v skladu z Uredbo EU o sredstvih za gnojenje.

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Standards Content (Sample)

SIST-TS CEN/TS 17722:2023
Rastlinski biostimulanti - Določanje mikoriznih gliv
Plant biostimulants - Determination of Mycorrhizal fungi
Pflanzen-Biostimulanzien - Bestimmung von Mykorrhizapilzen
Biostimulants des végétaux - Détermination des champignons mycorhiziens
Ta slovenski standard je istoveten z: CEN/TS 17722:2022
65.080 Gnojila Fertilizers
SIST-TS CEN/TS 17722:2023 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 17722:2023

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SIST-TS CEN/TS 17722:2023

CEN/TS 17722


March 2022
ICS 65.080
English Version

Plant biostimulants - Determination of mycorrhizal fungi
Biostimulants des végétaux - Détermination des Biostimulanzien für die pflanzliche Anwendung -
champignons mycorhiziens Bestimmung von Mykorrhizapilzen
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 17722:2022 E
worldwide for CEN national Members.

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SIST-TS CEN/TS 17722:2023
CEN/TS 17722:2022 (E)
Contents Page
European foreword . 4
Introduction . 5
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 7
4 Methods for the quantification of mycorrhiza . 9
4.1 General . 9
4.2 How to prepare the initial sample .11
4.2.1 General .11
4.2.2 Liquid – water-based formulations .11
4.2.3 Liquid – oil-based (emulsifiable concentrate EC) formulations .11
4.2.4 Solid – wettable powder (WP) formulations .11
4.2.5 Solid – water dispersible granules (WDG) formulations .11
4.2.6 Solid – pellets, granules, microgranules (slow release) formulations.12
4.2.7 Solid – substrate .12
4.3 Enumeration methods .12
4.3.1 General .

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