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Boxwood Dieback Caused By Colletotrichum theobromicola: A Diagnostic Guide

R. Singh and V. P. Doyle

September 2017

Diagnostics

Boxwood (Buxus spp.) is a popular perennial landscape shrub in the United States grown for its vibrant green color and evergreen growth. Several important plant diseases are known to occur on boxwood. In 2015, a new disease of boxwood called boxwood dieback was identified in Louisiana and is the first known report in the United States. Boxwood dieback is a stem/shoot disease caused by a fungal pathogen, Colletotrichum theobromicola. This manuscript presents a comprehensive guide to diagnose and identify boxwood dieback caused by C. theobromicola.

doi:10.1094/PHP-04-17-0024-DG

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