northern stem canker of soybean

Symptoms

Reddish-brown lesions at lower nodes on stem, lesions expand upward + downward forming sunken cankers, leaves above canker yellow then die while still attached (flag), whole-plant death in severe attacks, lesions sporulate black fruiting bodies in late season.

Plants affected

• soybean

Common questions

How do I recognise northern stem canker of soybean on soybean?

Reddish-brown lesions at lower nodes on stem, lesions expand upward + downward forming sunken cankers, leaves above canker yellow then die while still attached (flag), whole-plant death in severe attacks, lesions sporulate black fruiting bodies in late season.

Do I have to report northern stem canker of soybean?

No. northern stem canker of soybean is not a notifiable organism, so there is nothing to report to an authority. Treat it as a normal garden problem.

How is northern stem canker of soybean treated?

Mainly with biological and cultural measures — removing affected material, changing the conditions that favour it, and treating with agents approved in your country. The exact steps and their timing depend on the plant, the season and where you live: Dr. Phyto works them out in a free diagnosis.