Cookies on Plantwise Knowledge Bank

Like most websites we use cookies. This is to ensure that we give you the best experience possible.

 

Continuing to use www.plantwise.org/KnowledgeBank means you agree to our use of cookies. If you would like to, you can learn more about the cookies we use.

Plantwise Knowledge Bank

Your search results

Species Page

Fusarium wilt of hemp

Fusarium oxysporum f.sp. cannabis

Distribution

You can pan and zoom the map
Save map
Select a dataset
Map Legends
  • CABI Summary Records
Map Filters
Extent
Invasive
Origin
Third party data sources:

Host plants / species affected

Main hosts

show all species affected

List of symptoms / signs

Symptoms

Seedlings do not emerge (pre-emergent damping off), or wilt and fall over (post-emergent damping off). Symptoms in older plants begin as small, dark, irregular spots, initially appearing on lower leaves. Affected leaves suddenly become chlorotic. Wilt symptoms begin with an upward curling of leaf tips. Wilted leaves dry to a yellow-tan colour and hang on plants without falling off. Stems also turn yellow-tan. Cutting into wilted stems reveals a reddish-brown discolouration of xylem tissue. Pulled-up roots show no external symptoms. Barloy and Pelhate (1962) described the fungus wilting whole plants. Noviello and Snyder (1962) illustrated plants with only one side wilting. Dead plants may become partially enveloped in a white-pink mycelium. Surviving plants are stunted.

Impact

Fusarium wilt is a serious disease in eastern Europe, Italy and southern France. Extremely virulent strains reduce Cannabis survival by up to 80% (Tiourebaev et al., 1998).