How to Manage Pests
UC Pest Management Guidelines
Gray Mold (Botrytis Rot)
Pathogen: Botrytis cinerea
(Reviewed 1/07, updated 1/07)
In this Guideline:
While Botrytis cinerea is capable of colonizing damaged artichoke leaves, the main concern with this fungus is when it gets on the flower bracts. This fungus usually invades bracts that have been damaged from insects, snails/slugs, frost, or other factors. Infected bracts turn brown on the outside. On the inner surface of the bracts the characteristic gray growth of B. cinerea develops.
The fungus survives on decaying organic matter in and around artichoke fields. Senescent leaves may also support the growth of this fungus. Botrytis rot is typically more severe following periods of wet, rainy weather. This disease is also a postharvest concern because damaged or improperly handled artichoke buds can develop symptoms in storage.
Protect plant buds from damage caused by insects and other invertebrates. Handle harvested buds properly.
UC IPM Pest Management Guidelines:
S. T. Koike, UC Cooperative Extension, Monterey County
Acknowledgment for contributions to Diseases:S. Colbert, Griffin Corp., Valdosta, GA