WHAT WE DO / PT / Test Rounds
  PT20-1 Phaseolus vulgaris heterogeneity and summary results        
  Standard Proficiency Test | GMO Proficiency Test | Seed Health Proficiency Test
Test round 20-1 P.vul started with the shipment of three samples of Phaseolus vulgarus seed for germination, moisture and vigour testing.  

Samples were dispatched in August 2020 and the deadline for reporting test results to the Secretariat was 15 November 2020. This deadline was extended until 1 December 2020. By this date, 92% of the 182 participants had submitted their test results.   

Heterogeneity test results are published at 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. Gilliam McLaren
Official Seed Testing Station
Science and Advice for Scottish Agriculture
1 Roddinglaw Road
Edinburgh EH12 9FJ

Heterogeneity results PT20-1 P.vul
Summary report PT20-1 P.vul


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