WHAT WE DO / PT / Test Rounds
  PT 21-1 Zea mays heterogeneity results and summary report        
  Standard Proficiency Test | GMO Proficiency Test | Seed Health Proficiency Test
Test round 21-1 Z.may started with the shipment of three samples of Zea mays for germination, moisture, and vigour (radicle emergence) testing. Participants will receive their provisional results by e-mail.

Samples were dispatched in March 2021 and the deadline for reporting test results to the Secretariat was 1 July 2021. By this date, 97% of the 201 participants submitted their test results.   

Heterogeneity test results are provided on the ISTA website to allow the participants to review them. Heterogeneity results are the mean results of 10 samples that had been tested by the Test Leader prior to sample dispatch. The results are not necessarily the means that will be calculated but shall give a first indication of the seed quality parameters.  

With publishing this heterogeneity test report, no further results are accepted for submission. Laboratories are kindly requested not to provide results of re-tests unless they wish to receive advice from the Secretariat or the Proficiency Test Leader on issues encountered or specific questions arising.    

PTC Chair contact data:

Didier Demilly GEVES-SNES
Station Nationale d'Essais de Semences
25 Rue Georges-Morel C.S.
90024 49071 Beaucouzé Cedex
E-mail: didier.demilly@geves.fr

Heterogeneity results PT21-1 Z.may
Round 10 Seed Mixture seed list and images
Summary Report PT21-1 Z.may



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