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Arboriculture & Urban Forestry Online
Volume 33, Issue 6 — November 2007

Bacterial Leaf Scorch of Landscape Trees: What We Know and What We Do Not Know    (View PDF)

James L. Sherald

Abstract: Xylella fastidiosa has been recognized as a pathogen of landscape trees for over 25 years. Collectively, these diseases are referred to as bacterial leaf scorch (BLS). Arborists, property owners, and communities are now beginning to recognize BLS as a serious threat to the urban forest. Although advances in symptom awareness and diagnostic techniques have enabled arborists to diagnose BLS, there are many questions regarding host range, transmission, pathogeneses, disease management, and individual tree therapy that remain unanswered.

Keywords: Alternative hosts; BLS; leafhoppers; Pierce’s disease; Xylella fastidiosa

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