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International Seed Testing Association
International Seed Testing Association
Richtiarkade 18
8304 Wallisellen, CH
+41 44 838 60 00
International Seed Testing Association

Seed Health Proficiency Test

We are in need of contaminated seed lots of these species and pathogens. Any laboratories having contaminated seed lots available for these tests would be very welcome to contribute those seed lots for this purpose.  

Please contact the proficiency test subcommittee chairperson, Ruud Barnhoorn.

Ongoing round

The ISTA Seed Health Proficiency Test for detection of Phomopsis complex in Glycine max (soybean, soya bean) seeds

The aim of this proficiency test is to verify the ability of laboratories to detect Phomopsis complex in soybean seed samples. Accredited laboratories are required to participate if they hold a valid accreditation for the ISTA Method 7-016. Laboratories that are not accredited may participate as volunteers.

Registration closed

The samples will be ready for distribution in October and will be shipped from beginning of November.

Import permit/quarantine permit

Participants are requested to check with their customs which documents are needed to ensure the receipt of the seeds and to provide us with these details and documents. Laboratories needing an import/quarantine permit for this test round are kindly requested to obtain the permit before the 16th of September. Samples will be sent only to those laboratories which confirm to the ISTA Secretariat that all preconditions for secure shipping are met. Samples will be shipped from France.

For obtaining an import permit, you might need the following data:

Species: Glycine max
Pathogen: Phomopsis complex
Material: (infested) seeds
Quantity of seeds/bag: minimum of 400 seeds
Untreated seeds: Yes
Net weight (only seeds): 1000gr
Brut weight (with package): 1500gr
Origin country of production: France

If you have any questions regarding the provided information, please contact

Upcoming Seed Health Proficiency Test rounds:


Parastagonospora nodorum 
(Planned for 2023)


Colletotrichum lindemuthianum
(Planned for 2023)


Xanthomonas hortorum pv. carotae
(Planned for 2024)


Acidovorax valerianellae
(Planned for 2023)

Details will be announced as soon as registration is possible. Laboratories accredited for Seed Health will be notified by email and others via newsletter.

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