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Cabbage stem disease...


 
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HoeDown
Rank attained: Hazel Tree
Rank attained: Hazel Tree


Joined: 28 Oct 2008
Posts: 3
Location: South Kildare

PostPosted: Fri May 22, 2009 3:23 pm    Post subject: Cabbage stem disease... Reply with quote

Hello all, I'd be grateful if someone could identify the disease in the attached photo. It's on a Primo cabbage.

Thanks,
HoeDown.



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Liparis
Rank attained: Orchard owner


Joined: 23 Sep 2007
Posts: 651
Location: Co. Meath

PostPosted: Fri May 22, 2009 8:10 pm    Post subject: Reply with quote

Looks like stem rot. Fungal disease caused by various things but one trigger is water seedlings with chilled water while they are in the greenhouse. Another cause is overwatering when excess moisture gathers around the stem at soil level. You can buy a fungicide to reduce the problem, I can't remember if it's sulphur or Captan! Embarassed
Bill.

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Sean Ph'lib
Rank attained: Ash Tree
Rank attained: Ash Tree


Joined: 11 Dec 2008
Posts: 200
Location: Co Kerry

PostPosted: Fri May 22, 2009 9:12 pm    Post subject: Reply with quote

Looks like typical damping-off to me. The cure (or, rather, prevention) is to water with cheshunt compound after sowing.
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michael brenock
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Joined: 12 Aug 2008
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Location: cork

PostPosted: Fri May 22, 2009 10:32 pm    Post subject: Reply with quote

it is either wirestem (rhizoctonia spp) or Phoma stem rot, the latter is usually seed borne. Cauliflower is more susceptible, there are a number of fungicides used to control them and Bill you are right in mentioning Sulphur. low temperatures with high humidity favour the development and spread of the disease. The plants are not always killed but it does impair growth. give plenty ventilation and avoid overcrowding.
michael brenock horticultural advisor (retired)
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