WSU Extension

Hortsense

Bean
 
Disease
Common and yellow mosaics 
Curly top (Beet curly top virus) 
Damping-off 
Fusarium root rot 
Gray mold 
Rust 
White mold (Sclerotinia rot) 
Insect
Bean aphids 
Brown marmorated stink bug 
Cutworms and armyworms 
Spider mites 
Thrips 



print version| pdf version| email url    
Caption: Damping-off of cucumber seedlings
Photo by: R.S. Byther
  
Bean : Damping-off
(revision date: 6/2/2014)


Biology
Damping-off is caused by fungi that remain in the soil for long periods of time. Seeds may be rotted and seedlings may be infected and fail to emerge from the soil. Emerged seedlings are also attacked, causing them to wilt and topple over. Water-soaked or brownish lesions are often visible on the stem at the soil line. Plants become more resistant to attack as they mature. Damping-off fungi are more of a problem in cold soils with poor drainage, and in conjunction with overwatering.
Management Options

Non-Chemical Management
  • Plant in warm, well-drained soils during warm, dry weather.
  • Mulch soils to increase soil temperature.
  • Do not overwater.
  • Do not plant in soils known to be infested with damping-off fungi.
  • Plant shallowly to encourage quick seedling emergence and growth.
Select non-chemical management options as your first choice!

Chemical Management

None recommended

Images

+ Show larger images

 
Caption: Damping-off of cucumber seedlings
Photo by: R.S. Byther
Caption: Damping off of seedlings
Photo by: R.S. Byther
Caption: Damping-off of seedlings
Photo by: R.S. Byther
Caption: Damping off of petunia seedlings
Photo by: R.S. Byther