Documenting dieback

摘要

Wherever there is wood, you can find wood-rotting fungi.A wide range of relatively weak, wood-decaying fungi can cause cankers and dieback over time in stone fruit. They’re often referred to by genus — Eutypa, Cytospora, Calosphaeria, Botryosphaeria — and not to be confused with bacterial canker caused, not surprisingly, by bacterial infection.Recendy, scouts have seen more signs of these fungal canker pathogens in some Washington stone fruit orchards,sightings that raise questions about which pathogens are causing the dieback and what growers can do about it.