SIST EN 17700-2:2025

SLOVENSKI STANDARD
01-februar-2025
Nadomešča:
SIST-TS CEN/TS 17700-2:2023
Rastlinski biostimulanti - Navedbe - 2. del: Povečanje učinkovitosti hranil pri
rastlinah zaradi uporabe biostimulanta
Plant biostimulants - Claims - Part 2: Nutrient use efficiency resulting from the use of a
plant biostimulant
Pflanzen-Biostimulanzien - Auslobungen - Teil 2: Nährstoffverwertungseffizienz infolge
der Verwendung eines Pflanzen-Biostimulans
Biostimulants des végétaux - Allégations - Partie 2 : Efficacité d'utilisation des éléments
nutritifs résultant de l'utilisation d'un biostimulant des végétaux
Ta slovenski standard je istoveten z: EN 17700-2:2024
ICS:
65.080 Gnojila Fertilizers
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 17700-2
EUROPEAN STANDARD
NORME EUROPÉENNE
November 2024
EUROPÄISCHE NORM
ICS 65.080 Supersedes CEN/TS 17700-2:2022
English Version
Plant biostimulants - Claims - Part 2: Nutrient use
efficiency resulting from the use of a plant biostimulant
Biostimulants des végétaux - Allégations - Partie 2 : Pflanzen-Biostimulanzien - Auslobungen - Teil 2:
Efficacité d'utilisation des éléments nutritifs résultant Nährstoffverwertungseffizienz infolge der Verwendung
de l'utilisation d'un biostimulant des végétaux eines Pflanzen-Biostimulans
This European Standard was approved by CEN on 26 August 2024.

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. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists 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.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2024 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 17700-2:2024 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Terminology of the claim . 6
5 Assessment indices to validate the claims . 7
6 Specifications for the performance of the trials . 8
6.1 Control . 8
6.2 Under controlled conditions . 10
Annex ZA (informative) Relationship of this European Standard and the essential
requirements of Regulation (EU) 2019/1009 making available on the market of EU
fertilising products aimed to be covered . 11
Bibliography . 12
European foreword
This document (EN 17700-2:2024) has been prepared by Technical Committee CEN/TC 455 “Plant
biostimulants”, the secretariat of which is held by AFNOR.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by May 2025, and conflicting national standards shall be
withdrawn at the latest by May 2025.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes CEN/TS 17700-2:2022.
CEN/TS 17700-2:2022:
— new definitions of nutrient availability and available nutrient;
— an update of Clause 4: Terminology of the claim;
— a third example has been added;
— an informative Annex ZA on the relationship of this European standard and the essential
requirements of Regulation (EU) 2019/1009 has been added.
This document has been prepared under a standardization request addressed to CEN by the European
Commission. The Standing Committee of the EFTA States subsequently approves these requests for its
Member States.
For the relationship with EU Legislation, see informative Annex ZA, which is an integral part of this
document.
The EN 17700 series, Plant biostimulants — Claims, consists of the following parts:
— Part 1: General principles;
— Part 2: Nutrient use efficiency resulting from the use of a plant biostimulant;
— Part 3: Tolerance to abiotic stress resulting from the use of a plant biostimulant;
— Part 4: Determination of quality traits, resulting from the use of a plant biostimulant;
— Part 5: Determination of availability of confined nutrients in the soil or rhizosphere.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to implement this European Standard: 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 the United
Kingdom.
Introduction
The European Committee for Standardization (CEN) was requested by the European Commission (EC) to
draft European Standards or European Standardization deliverables to support the implementation of
Regulation (EU) 2019/1009 of 5 June 2019 [1] laying down rules on the making available on the market
of EU fertilising products (“FPR” or “Fertilising Products Regulation”).
This standardization request, presented as SR M/564 and relevant amendments, also contributes to the
Communication on “Innovating for Sustainable Growth: A Bio economy for Europe”. The interest in plant
biostimulants has increased significantly in Europe as a valuable tool to use in agriculture.
Standardization was identified as having an important role in order to promote the use of biostimulants.
The work of CEN/TC 455 seeks to improve the reliability of the supply chain, thereby improving the
confidence of farmers, industry, and consumers in biostimulants, and will promote and support
commercialisation of the European biostimulant industry.
This document has been developed to provide guidance for a consistent approach to justify the claims
associated with the use of plant biostimulants.
The definition of plant biostimulants in Regulation (EU) 2019/1009 [1] is claims-based. For this reason,
demonstrating that a product is indeed a bona fide plant biostimulant depends on a demonstration of its
function.
The placement of a plant biostimulant on the market does not guarantee effectiveness under all
conditions, as many factors can influence the performance of a plant biostimulant in the field.
Plant biostimulants can be applied in multiple ways: to the soil, on plants, as seed treatment, etc.
This document is applicable to all application types of plant biostimulants.
WARNING — Persons using this document should be familiar with normal laboratory practice. This
document does not purport to address all of the safety problems, if any, associated with its use. It is the
responsibility of the user to establish appropriate safety and health practices and to ensure compliance
with any national rules.
IMPORTANT — It is absolutely essential that tests conducted in accordance with this document be
carried out by suitably trained staff.

1 Scope
This document gives guidance on a consistent approach to justify the claims associated with the use of
plant biostimulants.
This document is aimed primarily at manufacturers, laboratories, researchers, technical centres, and
companies that intend to place plant biostimulants on the market, as well as notifying authorities, notified
bodies, and market surveillance authorities.
To be in compliance with this standard, it is important to also follow the recommendations and quality
criteria described in the standard EN 17700-1:2024 on general principles to demonstrate plant
biostimulant claims.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
EN 17700-1:2024, Plant biostimulants — Claims — Part 1: General principles
EN 17724:2024, Plant biostimulants — Terminology
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 17700-1:2024, EN 17724:2024,
and the following apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp/
— IEC Electropedia: available at https://www.electropedia.org/
3.1
nutrient use efficiency
measure of a plant’s ability to acquire and utilize nutrients from the environment for a desired outcome
based on (a) nutrient availability (b) uptake efficiency and/or (c) utilization efficiency
Note 1 to entry: Nutrient use efficiency is a complex trait: it depends on the ability of the plant to take up the
nutrients from the soil or growing media and the fertilizer applied, but also on nutrient transport, storage,
mobilization, and use within the plant, among other factors.
[SOURCE: EN 17724:2024, 3.1.2]
3.2
available nutrient
element either present in the soil solution or exchangeable on soil colloids
[SOURCE: EN 17724:2024, 3.1.5.1]
3.3
uptake efficiency
measure of the plant’s capacity to acquire nutrients from the environment
[SOURCE: EN 17724: 2024, 3.1.2.12]
3.4
nutrient availability
measure of the capacity of an available nutrient to be acquired by the plant
[SOURCE: EN 17724:2024, 3.1.2.3]
3.5
utilization efficiency
measure of the plant’s capacity to transform and valorise acquired nutrients into more complex
substances
EXAMPLE Organic compounds, plant biomass.
[SOURCE: EN 17724:2024, 3.1.2.13]
3.6
plant nutrient
chemical element used by the plant for growth and development, classified as a primary macronutrient,
secondary macronutrient or micronutrient per the quantity required by the plant
Note 1 to entry:
Primary macronutrients – nitrogen (N), phosphorus (P), potassium (K),
secondary macronutrients – calcium (Ca), magnesium (Mg), sodium (Na), sulphur (S),
micronutrients – boron (B), cobalt (Co), copper (Cu), iron (Fe), manganese (Mn), molybdenum (Mo), zinc (Zn).
[SOURCE: EN 17724:2024, 3.1.1.11]
4 Terminology of the claim
The label shall clearly indicate the effect(s) of the plant biostimulant that has/have been demonstrated
according to the standard EN 17700-1:2024 on general principles and this document.
A plant biostimulant can improve Nutrient Use Efficiency for one or more nutrient(s), in one or more
target crop(s). For terminology of the crops, refer to the standard EN 17700-1:2024 on general principles.
EXAMPLES
— improves nitrogen use efficiency in wheat,
— improves phosphorus and iron use efficiency in woody perennials.
NOTE The layout of the claim(s) can be different as long as the crop(s), and the claim(s) demonstrated are
mentioned.
5 Assessment indices to validate the claims
Agronomic indices have been proposed for the short-term assessment of nutrient use efficiency and its
components. The agronomic indices are reported in Tables 1 and 2, adapted from Dobermann A. (2007)
[2].
They can be used independently to justify the claim. These indices are based on the following
measurements:
F: amount of nutrient(s) made available to the plant by fertilizers and/or other environment
resources,
U: amount of nutrient(s) acquired by the plant biomass (total biomass or biomass in the part of
interest),
Y: crop yield. Could be interpreted in different manners: harvested part or total biomass,
C: concentration of t
...