The AHDB Recommended Lists for cereals and oilseeds 2016–2021 (RL) project provides independent information about the performance of varieties. The project is the largest research investment by AHDB Cereals & Oilseeds. Produced each year, the RL publication is based on the analysis of hundreds of UK trials conducted across several years.
The documents on these pages explain how the RL project is managed. It covers information on the trials and the decision-making process, including the reasons for adding and removing varieties from RL.
This video shows how disease severity is assessed in RL trials using a standardised scale (0 to 100 per cent)
The UK Cereal Pathogen Virulence Survey (UKCPVS) tests pathogen isolates to check their virulence against wheat and barley varieties. The testing can detect new races of cereal pathogens capable of causing disease on previously resistant cereal varieties.