WHAT WE DO / PT / Test Rounds
  PT17-3 Lolium perenne heterogeneity and summary results        
  Standard Proficiency Test | GMO Proficiency Test | Seed Health Proficiency Test
Test round 17-3 L.per started with the shipment of three samples of Lolium perenneseed for purity, other seed determination, germination and viability testing.  

Dispatch date was November 7, 2017 and the deadline for reporting test results to the Secretariat was March 1, 2018. The deadline was extended to March 8, 2018. By this date 95% of the 147 participants had submitted their test results.   

Heterogeneity test results are provided on the ISTA web site 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.    

PT Chair contact data:

Mr. Didier Demilly
GEVES-SNES Station Nationale d'Essais de Semences
25 Rue Georges Morel
C.S. 9002449071 Beaucouzé Cedex
E-mail: didier.demilly@geves.fr

PT17-3 L.per heterogeneity results
PT17-3 L.per photos of other seed
PT17-3 L per summary results


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