Diseases of Vegetables - Brussels Sprouts

 
 
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 Black Leaf Spot, Grey Leaf Spot.
Alternaria brassicae, A. brassicala and A. raphani

What to look for?
Alternaria leaf spot common on both Polish and Argentine canola can cause significant losses on all kinds of cruciferous vegetables from cabbage and Chinese cabbage to cauliflower.

This fungal disease can be particularly destructive in wet, cold August weather particularly since there is such a huge reservoir of fungal inoculum in canola fields in some seasons. All cruciferous vegetable crops grown on the prairies are subject to very high inoculum levels of disease and insect pests. This is a consequence of the 10 million or more acres of canola grown annually on the prairies. Canola crops and canola residues are the "mother lode" so to speak of these pest problems.

Alternaria leaf spots on the sprouts.
Photo: Ormrod
Picture description
Alternaria leaf spots on the sprouts.
.
Management strategy
None

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

Other Documents in the Series

 
  Diseases of Vegetables
Diseases of Vegetables - Asparagus
Diseases of Vegetables - Bean
Diseases of Vegetables - Broccoli
Diseases of Vegetables - Brussels Sprouts - Current Document
Diseases of Vegetables - Cabbage
Diseases of Vegetables - Carrot
Diseases of Vegetables - Cauliflower
Diseases of Vegetables - Celery
Diseases of Vegetables - Corn
Diseases of Vegetables - Cucumber
Diseases of Vegetables - Garlic
Diseases of Vegetables - Lettuce
Diseases of Vegetables - Muskmelon
Diseases of Vegetables - Onion
Diseases of Vegetables - Parsnip
Diseases of Vegetables - Pea
Diseases of Vegetables - Zucchini
 
 
 
 
This document is maintained by Shelley Barkley.
This information published to the web on November 25, 2003.
Last Reviewed/Revised on March 19, 2008.