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Hi Ryan,

Unfortunately, bacterial blight penetrates the seed coat and can be viable for two years, so heat treatment can’t touch it as this is a treatment for surface bacteria.

The only things you can do are:

  1.  Buy certified disease-free seed if you can find it.
  2.  Grow a bacterial resistant variety.
  3.  Be sure that you have removed plant debris from your bean fields, rotate crops, and be aware that the blight spreads easily by irrigation water and don’t walk through the field when the plants are wet. These measures will only serve to reduce the spread of the blight.
Lynda

Lynda Prim (she/her)
Vermont Bean Crafters/Cloud Water Farm
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From: Vermont Vegetable and Berry Growers <[log in to unmask]> On Behalf Of Yoder Ryan
Sent: Thursday, April 29, 2021 11:12 AM
To: [log in to unmask]
Subject: heat treatment for bean bacterial blight?

Hi all,
curious if anyone knows if bacterial blight can be somehow heat treated off of bean seed? my understanding is that it is internal to the seed and untreatable, but would be awesome to find out I was wrong about that!
thanks,
Ryan