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  PT 19-3 Hordeum vulgare heterogeneity and summary results        
  Standard Proficiency Test | GMO Proficiency Test | Seed Health Proficiency Test
 
Test round 19-3 H.vul started with the shipment of three samples of Hordeum vulgare seed for purity, other seed determination, germination and viability testing.  

Samples were dispatched in February 2020 and the deadline for reporting test results to the Secretariat was 27 July 2020. By this date 92% of 200 participants submitted their test results.   

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. Sarah Dammen
Seed Testing Laboratory
SGS North America
1405 32nd Ave
Brookings, SD 57006
UNITED STATES
sarah.dammen@sgs.com

Seed mixture training exercise
An extra sample with a seed mixture was included in this PT round. The participation in the seed mixture identification test is voluntary. It is an exercise organised by the ISTA Purity Committee with the aim of improving the seed identification skills of the analysts and it is not subjected to rating.

Heterogeneity results PT19-3 H.vul
OSD photos PT19-3 H.vul
Summary report PT19-3 H.vul

Round 8 Seed Mixture seed list and images





 

 


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