WHAT WE DO / PT / Test Rounds
  PT 20-2 Allium porrum heterogeneity and summary results        
  Standard Proficiency Test | GMO Proficiency Test | Seed Health Proficiency Test
Test round 20-2 A.por started with the shipment of three samples of Allium porrum seed for purity, other seed determination, germination, viability, and thousand seed weight testing.  

Samples were dispatched in August 2020 and the deadline for reporting test results to the Secretariat was 1 December 2020. This deadline was extended until 15 December 2020. By this date, 93% of the 180 participants had 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:

Mrs. Irena Gera
Seed Testing Station Poznan
Plant Protection and Seeds Service
ul. Grunwaldzka 250B
60-166 Poznan

Heterogeneity results 20-2 A.por
OSD photos PT20-2 A.por
Summary report PT20-2 A.por


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