This has happened so very often with the rusts, PSQ, all the way from Perdix to Cambier to the Stigg, but not often, so far, with varieties with exceptional septoria resistance.We're all going to plant Extase in 2020, and some time between 2021 and 2024 it's resistance will break down.
For example, the variety Exsept is still going strong here after 20 years or so.
Fortunately, Exsept was never recommended by the HGCA because, at the time, their highest-yielding trials were planted far too late for it, thereby completely missing its big commercial advantage.
Last edited: