0
points
Black seed coat on soybean plants grown in Florida

Soybean    None Given

I recently received seed from plants I had grown in Florida for our winter nursery. We received several individual plants with seeds with tight constricted pods. The seeds in those pods were considerably smaller and covered in black seed coat. As we don't have the rest of the plant to use for identification, only the seeds and shells, it has been much more difficult to identify this disease. Any help would be appreciated.


Posted by: Alison Willette (1 point) Alison Willette
Posted: May 24, 2016




Answers

2
points
It may be anthracnose blight caused by Colletotrichum truncatum (a fungal disease). If the infection occurs during young pod stage you will find the seedless pods but if it occurs during mature pod stage the pods become shrivel and produce small seeds which are covered by black fungal spores.


Posted by: Dr. Ravishankar Narayana (11 points) Dr. Ravishankar Narayana
Posted: May 24, 2016




2
points
I also think it is Colletotrichum truncatum that is causing the symptoms seen as small seeds and shrivelled pods. The signs of the disease include the black seed coat which are the fungal spores.


Posted by: Wijnand Swart (5 points) Wijnand Swart
Posted: May 25, 2016




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