Abstract

This document specifies a horizontal method for the enumeration of microorganisms that are able to grow and form colonies in a solid medium after anaerobic incubation at 30 °C. The method applies to microbial plant biostimulants, except those composed of aerobic bacteria. This method does not apply to the microbiological monitoring of the environment in which microbial plant biostimulants are manufactured. No information about potential human pathogens can be inferred from anaerobic plate counts. This document is applicable to the blends of fertilizing products where a blend is a mix of at least two of the following component EU fertilizing products categories: Fertilizers, Liming Materials, Soil Improvers, Growing Media, Plant Biostimulants and where the following category Plant Biostimulants is the highest % in the blend by mass or volume, or in the case of liquid form by dry mass. If Plant Biostimulants is not the highest % in the blend, the European Standard for the highest % of the blend applies. In case a blend of fertilizing products is composed of components in equal quantity or in case the component EU fertilising products used for the blend have identical formulations1, the user decides which standard to apply.

Begin

2022-02-28

WI

00455021

Planned document number

DIN EN 17719

Project number

05702224

Responsible national committee

NA 057-03-06 AA - Plant biostimulants  

Responsible european committee

CEN/TC 455/WG 3 - Pathogenic and non-pathogenic microorganisms  

draft standard

Plant biostimulants - Determination of the anaerobic plate count; German and English version prEN 17719:2023
2023-05
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previous edition(s)

Plant biostimulants - Determination of the anaerobic plate count; German version CEN/TS 17719:2022
2022-07

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