Independent Variety Trials (IVT)

Blight trialsIn addition to DUS and VCU trials, SASA Variety Testing, in collaboration with its partners Biomathematics and Statistics Scotland (BioSS), James Hutton Limited (JHL) and SAC Consulting Ltd., undertake Independent Variety Trials (IVT) on behalf of the Agriculture and Horticulture Development Board (AHDB). The potato Industry considers it very desirable to compile a comprehensive, independent data set of varietal ratings for diseases considered to be of most importance for UK potato production.  To this end, AHDB Potatoes fund a set of tests for some diseases not covered by the official National List programme but nevertheless fully integrated with the statutory testing system.  A full list of the disease resistances tested can be found on the potato disease testing page.  


Agents/breeders of varieties entering the second year of UK National List are invited to enter their varieties for IVT testing.  In addition, agents/breeders of varieties found on the European Union Common Catalogue intended for production in GB are also invited to enter their varieties. The results of all tests are published on the AHDB Potatoes' Potato Variety Database hosted by SASA.