Plant biostimulants - Determination of mycorrhizal fungi

This standard was developed to provide a horizontal method for enumeration and genera/species determination [1], [2], [3] of mycorrhizal fungi in microbial plant biostimulant in accordance with the Regulation (EU) 2019/1009 of the European Parliament and of the Council.

Pflanzen-Biostimulanzien - Bestimmung von Mykorrhizapilzen

Diese Norm wurde entwickelt, um ein horizontales Verfahren für die Zählung und die Bestimmung der Gattung/Spezies [1] [2] [3] von Mykorrhizapilzen in mikrobiellen Pflanzen-Biostimulanzien in Übereinstimmung mit der Verordnung (EU) 2019/1009 des Europäischen Parlaments und des Rates bereitzustellen.

Biostimulants des végétaux - Détermination des champignons mycorhiziens

La présente norme a été élaborée pour fournir une méthode horizontale pour le dénombrement et la détermination du genre/de l’espèce [1], [2], [3] des champignons mycorhiziens dans un biostimulant microbien des végétaux conformément au Règlement UE 2019/1009 du Parlement Européen et du Conseil.

Rastlinski biostimulanti - Ugotavljanje prisotnosti in števila mikoriznih gliv

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4599 - Dispatch of FV draft to CMC - Finalization for Vote
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Standards Content (Sample)

oSIST prEN 17722:2023
Rastlinski biostimulanti - Ugotavljanje prisotnosti in števila 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: prEN 17722
65.080 Gnojila Fertilizers
oSIST prEN 17722:2023 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN 17722:2023

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oSIST prEN 17722:2023

prEN 17722


April 2023
ICS 65.080 Will supersede CEN/TS 17722:2022
English Version

Plant biostimulants - Determination of mycorrhizal fungi
Biostimulants des végétaux - Détermination des Pflanzen-Biostimulanzien - Bestimmung von
champignons mycorhiziens Mykorrhizapilzen
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 455.

If this draft becomes a European Standard, CEN members are bound to comply with the CEN/CENELEC Internal Regulations
which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.

This draft European Standard was established by CEN in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC
Management Centre has the same status as the official versions.

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, Türkiye and
United Kingdom.

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.



CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2023 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 17722:2023 E
worldwide for CEN national Members.

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oSIST prEN 17722:2023
prEN 17722:2023 (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 .10
4.1 General .10
4.2 How to prepare the initial sample .12
4.2.1 General .12
4.2.2 Liquid – water-based formulations .12
4.2.3 Liquid – oil-based (emulsifiable concentrate EC) formulations .12
4.2.4 Solid – wettable powder (WP) formulations .12
4.2.5 Solid – water dispersible granules (WDG) formulations .12
4.2.6 Solid – pellets, granules, microgranules (slow release) formulations.13
4.2.7 Solid – substrate .

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