Diseases of Buckwheat

 
 
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 Botrytis Rot.
Botrytis cinerea

What to look for?
This disease is widespread under humid growing conditions. The disease can cause premature ripening of the crop.

Botrytis mycelium on infected stem.
Photo: Zimmer		Picture description
Botrytis mycelium on infected stem.		 Botrytis damage to the seed.
Photo: Zimmer		 Picture description
Botrytis damage to the seed.
.
Management strategy
The fungus winters as sclerotia in the soil. Control is via crop rotation. of 3 - 4 years.

Downy Mildew.
Peronospora ducometi

What to look for?
Downy mildew causes leaf yellowing and premature defoliation of the crop.

Downy mildew infection.
Photo: Zimmer		Picture description
Downy mildew infection.		 Downy mildew infested buckwheat leaves.
Photo: Zimmer		Picture description
Downy mildew infested buckwheat leaves.
.
The fungus may go systemic in the crop and the disease can be seed-borne.
Photo: Zimmer		Picture description
The fungus may go systemic in the crop and the disease can be seed-borne.

Management strategy
Clean seed and 3 - 4 year crop rotation gives disease control.

Aster Yellows.
Mycoplasma - phytoplasma

What to look for?
Aster Yellows shows up occasionally in the crop but levels rarely exceed more than 5%.

Phytoplasma infection of buckwheat.
Photo: Zimmer		Picture description
Phytoplasma infection of buckwheat.
.
Management strategy

Photographs and information assembled and prepared for ARD by Dr. Ieaun R. Evans Agri-Trend Agrology Ltd.		  
 
 
 
For more information about the content of this document, contact Ron Howard.
This document is maintained by Shelley Barkley.
This information published to the web on December 9, 2003.
Last Reviewed/Revised on December 8, 2010.