tomato blight

Last post 08-06-2006 11:15 PM by Mick, HOOE. 8 replies.

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12/08/2005 10:11 AM	In reply to
Digger Location: Northern UK Joined on: 18 Jul 2005 Posts: 5,230	Reply \| Contact Fredjb have you considered using a sulphur candle? digger Sage of the fells

14/10/2005 08:02 AM
fredjb Location: Joined on: 13 Oct 2005 Posts: 20	Reply \| Contact I have a small (10 ft x 6 ft) polytunnel in which I grow tomatoes, climbing French beans, peppers, etc. The reason that I bought and erected the polytunnel (last year) is that I used to suffer with tomato blight when growing them outdoors. Unfortunately, the cover failed (perforated) this year which meant that it leaked and, although I received a replacement cover from the supplier, and installed it recently, my tomatoes have gone down with blight this week. I suspect that this is due to the leaking cover permitting the ingress of spores via wind and rain. I have removed/burned all the tomato plants and am removing the compost in the ring culture pots. The question then arises: what else do I need to do to ''decontaminate''/disinfect the structure and soil so that I can guarantee that I can grow tomatoes successfully next year? Is there a well-tried procedure to combat this problem? Any ideas would be much appreciated. Thanks fredjb fredjb

14/10/2005 08:02 AM

fredjb
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I have a small (10 ft x 6 ft) polytunnel in which I grow tomatoes, climbing French beans, peppers, etc. The reason that I bought and erected the polytunnel (last year) is that I used to suffer with tomato blight when growing them outdoors. Unfortunately, the cover failed (perforated) this year which meant that it leaked and, although I received a replacement cover from the supplier, and installed it recently, my tomatoes have gone down with blight this week. I suspect that this is due to the leaking cover permitting the ingress of spores via wind and rain. I have removed/burned all the tomato plants and am removing the compost in the ring culture pots. The question then arises: what else do I need to do to ''decontaminate''/disinfect the structure and soil so that I can guarantee that I can grow tomatoes successfully next year? Is there a well-tried procedure to combat this problem? Any ideas would be much appreciated. Thanks fredjb

fredjb

30/11/2005 03:50 PM	In reply to
Helen Bostock Plantsforbugs Location: Wisley Joined on: 31 Aug 2005 Posts: 539	Reply \| Contact The risk of infection from old, infected plant debris is relatively minor compared to air-borne spores landing on wet leaves (hence tomatoes under cover are less prone to blight since their foliage should stay dry). Simply disposing of the blighted plants should be sufficient but if you want to be absolutely sure there is no harm in treating your pots and polytunnel structure with a solution of Jeyes Fluid or Armillatox (only approved for hard surfaces). Helen Bostock

30/11/2005 03:50 PM

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Helen Bostock Plantsforbugs
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Wisley
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The risk of infection from old, infected plant debris is relatively minor compared to air-borne spores landing on wet leaves (hence tomatoes under cover are less prone to blight since their foliage should stay dry). Simply disposing of the blighted plants should be sufficient but if you want to be absolutely sure there is no harm in treating your pots and polytunnel structure with a solution of Jeyes Fluid or Armillatox (only approved for hard surfaces).

Helen Bostock

30/11/2005 09:00 PM	In reply to
fredjb Location: Joined on: 13 Oct 2005 Posts: 20	Reply \| Contact Thank you very much, Helen. I shall attend to it in due course. Thanks again. Best Fred fredjb

01/12/2005 10:55 AM	In reply to
ndhort Location: Joined on: 06 Aug 2004 Posts: 37	Reply \| Contact I'd check with the manufacturer about spraying chemical on the cover sometimes certain chemicals can leave a permanent residue.Is your tunnel heated?

01/12/2005 01:11 PM	In reply to
fredjb Location: Joined on: 13 Oct 2005 Posts: 20	Reply \| Contact Thanks for the tip,ndhort. I'll certainly check that. Best fredjb fredjb

08/12/2005 07:46 AM	In reply to
fredjb Location: Joined on: 13 Oct 2005 Posts: 20	Reply \| Contact Helen and ndhort: Jeyes say: We wouldn't recommend the use of Jeyes Fluid as it attacks all forms of plastic. However the Greenhouse Cleaner should work and shouldn't react with the tunnel. The polytunnel supplier says: It [Jeyes Fluid] is completely safe and it will not damage your tunnel if you use diluted Jeyes Fluid inside the cover of your tunnel. Jeyes also say that their Greenhouse Cleaner is an effective bacteria killer but is not a fungicide. This is what I need - a fungicide. Can anyone recommend something suitable? Thanks fredjb fredjb

08/12/2005 07:46 AM

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fredjb
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Helen and ndhort: Jeyes say: We wouldn't recommend the use of Jeyes Fluid as it attacks all forms of plastic. However the Greenhouse Cleaner should work and shouldn't react with the tunnel. The polytunnel supplier says: It [Jeyes Fluid] is completely safe and it will not damage your tunnel if you use diluted Jeyes Fluid inside the cover of your tunnel. Jeyes also say that their Greenhouse Cleaner is an effective bacteria killer but is not a fungicide. This is what I need - a fungicide. Can anyone recommend something suitable? Thanks fredjb

fredjb

08/12/2005 12:40 PM	In reply to
fredjb Location: Joined on: 13 Oct 2005 Posts: 20	Reply \| Contact Thanks, digger. No, but now you mention it - and I've looked it up (!)- it's clearly the thing. I'll buy one next week. Thanks again. Best fredjb fredjb

08/06/2006 11:15 PM	In reply to
Mick, HOOE Location: Joined on: 09 Jun 2006 Posts: 1	Reply \| Contact [b][i]Hi Helen, I have had tomato blight each year, and it seems to occur half way through 'picking season, rendering almost all of the outdoor plants and fruit useless. It also seems to effect around 5% to 10% of the plants in the greenhouse. I read your comments regarding safety precautions (Jayes Fluid/Armillatox) and wonder if you know of any other precautions one can take early in the season? Am I correct in believing that it is airborne spoores that transmit the problem? If so it's probably difficult to avoid. Do you know of any other websites that might offer advice in avoiding the problem of tomato blight? Thanks, Mick, HOOE. (East Sussex)[/i][/b]

08/06/2006 11:15 PM

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Mick, HOOE
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[b][i]Hi Helen, I have had tomato blight each year, and it seems to occur half way through 'picking season, rendering almost all of the outdoor plants and fruit useless. It also seems to effect around 5% to 10% of the plants in the greenhouse. I read your comments regarding safety precautions (Jayes Fluid/Armillatox) and wonder if you know of any other precautions one can take early in the season? Am I correct in believing that it is airborne spoores that transmit the problem? If so it's probably difficult to avoid. Do you know of any other websites that might offer advice in avoiding the problem of tomato blight? Thanks, Mick, HOOE. (East Sussex)[/i][/b]

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tomato blight