Submitted to: Book Chapter
Publication Type: Book / Chapter
Publication Acceptance Date: April 1, 2007
Publication Date: May 1, 2009
Citation: Hanson, L.E. 2009. Gray Mold or Botrytis Blight. In: Harveson, R.M., Hanson, L.E., editors. Compendium of Beet Diseases and Pests. 2nd Edition. St. Paul, MN:APS Press. p.20-21.
Interpretive Summary: Gray mold can be a problem, particularly on swiss chard and occasionally on plants for seed production. It usually is a minor problem, in growing beets, although it can cause damage to beets in storage (discussed in separate chapter). Symptoms, epidemiology, and management are discussed in the chapter.
Gray mold, caused by Botrytis cinerea can cause an intermittent decay of leaves or seed production organs of beet. The disease is not usually economically important on sugar beet, but can be severe enough to need control on swiss chard. This chapter describes the disease and pathogen and mentions management options.