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Mycologia,DEUTEROMYCOTINA, MELANCONIALES, MELANCONIACEAE .

Crops attacked: soybean .

Anthracnose of soybean

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

[R]Description
Dark irregular lesions occur on leaves, stems and pods which are covered by small black dots (acervuli).

[R]Biology
The biology of this fungus is similar to that of C. lindemuthianum in bean.
The pathogen produces acervuli and conidia.

[R]Epidemiology
The disease is seed-borne.
Moderate temperatures and humid conditions favour the spread of the disease.

[R]Treatement
Use healthy seeds.
Use resistant cultivars.
Apply recommended fungicides.

[R]Possible misleading
The symptoms of Glomerella glycines which is present in older plants at the same time.

[R] Images

1. Colletotrichum dematium truncatum , Soybean anthracnose (POINSO B., INRA)
   Soybean anthracnose Many black dots(acervuli) on a soybean stem.
   
2. Colletotrichum dematium truncatum , Soybean anthracnose (POINSO B.,INRA)
   Soybean anthracnose Pycnidia of anthracnose disease on soybean stem (dissecting microscope observation).
   
3. Colletotrichum dematium truncatum , Soybean anthracnose (POINSO B., INRA)
   Soybean anthracnose Many small black dots (acervuli) on a soybean stem.
   
4. Colletotrichum dematium truncatum , Soybean anthracnose (POINSO B., INRA)
   Soybean anthracnose Acervules of soybean anthracnose.
   

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