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Diseases of Alfalfa - Bacterial

 
 
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 Bacterial Wilt.
Corynebacterium insidiosum

What to look for?
Formerly a very destructive disease of alfalfa common in North America. Most cultivars bred in North America now have high levels of resistance. Mowing spreads the disease from plant to plant. European cultivars and on occasion susceptible North American cultivars especially under irrigation may show significant damage.

Bacterial wilt stunted alfalfa plant. Bacterial wilt stunted alfalfa plant
Photo: Nelson
Picture description
Bacterial wilt stunted alfalfa plant.
Bacterial wilt infected stem. Bacterial wilt infected stem.
Photo: Howard
Picture description
Bacterial wilt infected stem.
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Management strategy
For control use resistant cultivars and avoid mowing when the alfalfa stands are wet.

Photographs and information assembled and prepared for ARD by Dr. Ieaun R. Evans Agri-Trend Agrology Ltd.
 
 
 
 

Other Documents in the Series

 
  Diseases of Alfalfa - Bacterial - Current Document
Diseases of Alfalfa - Fungal
Diseases of Alfalfa - Nematodes
Diseases of Alfalfa - Non-Infectious
Diseases of Alfalfa - Viral
 
 
 
 
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 18, 2003.
Last Reviewed/Revised on March 18, 2008.