CEN/TS 17718:2022

Plant biostimulants - Determination of Rhizobium spp.

This document provides the methodology for the enumeration and determination of Rhizobium sp., Mesorhizobium sp., Ensifer sp., or Bradyrhizobium sp. in plant biostimulant products in accordance with the Regulation (EU) 2019/1009 of the European Parliament and of the Council [1].

Pflanzen-Biostimulanzien - Bestimmung von Rhizobium spp.

Dieses Dokument wurde entwickelt, um die Methodik für die Zählung und Bestimmung von Rhizobium sp., Mesorhizobium sp., Ensifer sp. oder Bradyrhizobium sp. in Pflanzen-Biostimulanzienprodukten in Übereinstimmung mit der Verordnung (EU) 2019/1009 des Europäischen Parlaments und des Rates [1] bereitzustellen.

Biostimulants des végétaux - Détermination de Rhizobium spp.

Le présent document fournit la méthodologie de dénombrement et de détermination de Rhizobium sp., Mésorhizobium sp., Ensifer sp. ou Bradyrhizobium sp. dans les produits biostimulants des végétaux conformément au Règlement (UE) 2019/1009 du Parlement européen et du Conseil [1].

Rastlinski biostimulanti - Določanje Rhizobium spp.

Ta dokument zagotavlja metodologijo za štetje in določanje bakterij Rhizobium sp., Mesorhizobium sp., Ensifer sp. ali Bradyrhizobium sp. v rastlinskih biostimulantih v skladu z Uredbo (EU) 2019/1009 Evropskega parlamenta in Sveta [1].

General Information

• Status: Published
• Publication Date: 22-Mar-2022
• ICS: 65.080 - Fertilizers
• Technical Committee: CEN/TC 455 - Plant Biostimulants and Agricultural Micro-Organisms
• Drafting Committee: CEN/TC 455/WG 3 - Pathogenic and non-pathogenic microorganisms
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 23-Mar-2022
• Due Date: 29-Aug-2022
• Completion Date: 23-Mar-2022
• Directive: 2019/1009 - Regulation (EU) 2019/1009 of the European Parliament and of the Council of 5 June 2019 laying down rules on the making available on the market of EU fertilising products and amending Regulations (EC) No 1069/2009 and (EC) No 1107/2009 and repealing Regulation (EC) No 2003/2003
• Mandate: M/564 - Fertilising products in support of Regulation (EU) 2019/1009
• Ref Project: SIST-TS CEN/TS 17718:2023 - Plant biostimulants - Determination of Rhizobium spp

Relations

• Revised: FprEN 17718 - Plant biostimulants - Determination of Rhizobium spp.
• Effective Date: 15-Feb-2023

Standards Content (Sample)

SLOVENSKI STANDARD
SIST-TS CEN/TS 17718:2023
01-februar-2023
Rastlinski biostimulanti - Določanje Rhizobium spp.
Plant biostimulants - Determination of Rhizobium spp
Pflanzen-Biostimulanzien - Bestimmung von Rhizobium spp.
Biostimulants des végétaux - Détermination de Rhizobium spp.
Ta slovenski standard je istoveten z: CEN/TS 17718:2022
ICS:
65.080 Gnojila Fertilizers
SIST-TS CEN/TS 17718:2023 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 17718:2023

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SIST-TS CEN/TS 17718:2023


CEN/TS 17718
TECHNICAL SPECIFICATION

SPÉCIFICATION TECHNIQUE

March 2022
TECHNISCHE SPEZIFIKATION
ICS 65.080
English Version

Plant biostimulants - Determination of Rhizobium spp.
Biostimulants des végétaux - Détermination de Biostimulanzien für die pflanzliche Anwendung -
Rhizobium spp. Bestimmung von Rhizobium spp.
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.





EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATIO N

E U R OP ÄI SCHES KOMITEE FÜR NORMUN G

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 17718:2022 E
worldwide for CEN national Members.

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SIST-TS CEN/TS 17718:2023
CEN/TS 17718:2022 (E)
Contents Page
European foreword . 3
Introduction . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Enumeration of Rhizobium sp., Mesorhizobium sp., Ensifer sp., Bradyrhizobium sp. . 7
4.1 General . 7
4.2 Sample preparation . 7
4.2.1 General . 7
4.2.2 Liquid – water-based formulations . 7
4.2.3 Liquid – oil-based, emulsifiable concentrate (EC) formulations . 7
4.2.4 Solid – wettable powder (WP) formulations . 7
4.2.5 Solid – water dispersible granules (WDG) formulations . 7
4.2.6 Solid – pellets, granules, microgranules - slow release - formulations . 7
4.2.7 Solid – substrate . 8
4.3 Serial dilution . 8
4.4 Plate counts of rhizobia in sterile diluent .
...