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Pest and Disease Management Plan - Vascular Wilt and Crown Rot Disease Management Plan for Production Nurseries

Vascular wilts and crown rots (including heart rot) are among the most destructive plant diseases that occur in production nurseries. They are very important because their presence can go undetected for relatively long periods, they almost always result in plant death and fungicides cannot eradicate infections. Environmental conditions that favour plant growth also favour these pathogens. In this management plan the biology of each disease and the symptoms they cause will be described, including non-pathogenic disorders that sometimes cause similar symptoms. In particular, the differences between vascular wilt and crown rot pathogens are outlined. Detailed strategies are provided to reduce risk of entry into the nursery and break the life cycle should an infestation occur.