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Mycologia, DEUTEROMYCOTINA, HYPHOMYCETALES, TUBERCULARIACEAE .

Crops attacked: asparagus .

Die-back of asparagus

Identification, Description, Biology, Epidemiology, Treatement, Possible misleading, Images

[R]Description
This fungus is often accompanied by Fusarium moniliforme , it attacks the roots and causes the yellowing and wilting of the infected plants.
The affected tendrils show isolated necrotic areas on the roots which may develop into severe rot.
This fungus causes widespread die-back in asparagus crops.

[R]Biology
Within the parasitic complex it forms with F. moniliforme , this fungus is the only one to infect the root vascular system.
It can be transmitted by contaminated tendrils or through an already highly infested soil.

[R]Epidemiology
High temperature and humid conditions facilitate the spread of the disease.

[R]Treatement
Preventive treatment by dipping the tendrils in a fungicide mixture.
Disinfect the soil.

[R]Possible misleading
.

[R] Images

1. Fusarium oxysporum asparagi , Asparagus dieback (ROUGIER J., INRA)
   Asparagus dieback Leaf yellowing and necrosis of the leaves and roots of infected aspaparagus by fusarium disease.
   
2. Fusarium oxysporum asparagi , Asparagus dieback (ROUGIER J., INRA)
   Asparagus dieback Brown, dry and hollow roots without rootlets of an asparagus tendril infected by Fusarium oxysporum asparagi .
   
3. Fusarium oxysporum asparagi , Asparagus dieback (ROUGIER J., INRA)
   Asparagus dieback Cut into an asparagus tendril infected by Fusarium oxysporum asparagi showing brownished shoots.
   

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HYP3 on line : Species (scientific name), Diseases (common names), Glossary, Crops.

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