Tomato Problem
I have tomatoe plants that start off great, then when they are about 18
inches tall and quite bushy, the top leaves start turning black and curl up and die. This then gradually spreads down the whole plant and it then dies completely. What is the problem and how can I stop this spreading to my other tomato plants. My brother who lives 200 kilometres away from me is also having the same problem.with his tomato plants Advice would be greatly appreciated. Thanks. Norman |
Tomato Problem
"Norman" wrote in message .au... I have tomatoe plants that start off great, then when they are about 18 inches tall and quite bushy, the top leaves start turning black and curl up and die. This then gradually spreads down the whole plant and it then dies completely. What is the problem and how can I stop this spreading to my other tomato plants. My brother who lives 200 kilometres away from me is also having the same problem.with his tomato plants Advice would be greatly appreciated. Thanks. Norman Pics to compare yours with known issues: From the Texas A&M aggie site: http://aggie-horticulture.tamu.edu/p...problemsolver/ From Colorado: http://www.ext.colostate.edu/PUBS/Garden/02949.html Its most likely a wilt . Possibly a blight. Not much can be done at this stage, except a good clean up. Don't plant Tomes there next year. Certainly try crop rotation and give good thought to a bit of soil remediation along your philosophy lines. I am a strong advocate of soil testing so as to have a known starting point, rather than the traditional; a bit of this, a bit of that. There are tips in the two references, but above all, do try more resistant plants with that soil test. FWIW, these are dot edu sites, not dot com, so not as many granola group tales to sort thru. Good luck |
Tomato Problem
Norman wrote:
I have tomatoe plants that start off great, then when they are about 18 inches tall and quite bushy, the top leaves start turning black and curl up and die. This then gradually spreads down the whole plant and it then dies completely. What is the problem and how can I stop this spreading to my other tomato plants. My brother who lives 200 kilometres away from me is also having the same problem.with his tomato plants Advice would be greatly appreciated. Thanks. Norman This sounds like a fungal attack to me though I cannot say which one. Has the weather been very wet and/or humid lately? There isn't much you can do immediately except destroy the affected plants (burying away from the vege garden is good) and replant away from the infected area. Plant with wider spacing and tie them up religiously to allow air to circulate. Try other cultivars because some are much more resistent to fungus than others. Also be careful with watering. Try to keep the leaves dry and just water the roots and avoid kicking up mud with the hose. Drippers or soakers are good here instead of sprayers or hosing. David |
Tomato Problem
"David Hare-Scott" wrote in message ... Norman wrote: I have tomatoe plants that start off great, then when they are about 18 inches tall and quite bushy, the top leaves start turning black and curl up and die. This then gradually spreads down the whole plant and it then dies completely. What is the problem and how can I stop this spreading to my other tomato plants. My brother who lives 200 kilometres away from me is also having the same problem.with his tomato plants Advice would be greatly appreciated. Thanks. Norman This sounds like a fungal attack to me though I cannot say which one. Has the weather been very wet and/or humid lately? There isn't much you can do immediately except destroy the affected plants (burying away from the vege garden is good) and replant away from the infected area. Plant with wider spacing and tie them up religiously to allow air to circulate. Try other cultivars because some are much more resistent to fungus than others. Also be careful with watering. Try to keep the leaves dry and just water the roots and avoid kicking up mud with the hose. Drippers or soakers are good here instead of sprayers or hosing. David Hi, I live in North Queensland where it is hot and humid much of the year. I had a lot of trouble trying to grow tomatoes because of fungal attacks. The worse was one that turned the skin transparent before the whole tomato turned into a bag of foul smelling mush. I have been growing Roma tomatoes with much better success. I can keep the fungus at bay with occasional sprays of wettable sulphur. It usually gets my plants in the end, but not before I have a good harvest. I can keep the neighbours in tomatoes for a month or two and cook lots to put in the freezer. I tried to keep a continuous supply by planting every three weeks, but I just gave the fungus a continuous home. Cheers, Dan |
Tomato Problem
Thank you very much for taking the time to give me advice in such detail. I
really appreciate your help and advice. Many thanks. Norman "gunner" wrote in message access... "Norman" wrote in message .au... I have tomatoe plants that start off great, then when they are about 18 inches tall and quite bushy, the top leaves start turning black and curl up and die. This then gradually spreads down the whole plant and it then dies completely. What is the problem and how can I stop this spreading to my other tomato plants. My brother who lives 200 kilometres away from me is also having the same problem.with his tomato plants Advice would be greatly appreciated. Thanks. Norman Pics to compare yours with known issues: From the Texas A&M aggie site: http://aggie-horticulture.tamu.edu/p...problemsolver/ From Colorado: http://www.ext.colostate.edu/PUBS/Garden/02949.html Its most likely a wilt . Possibly a blight. Not much can be done at this stage, except a good clean up. Don't plant Tomes there next year. Certainly try crop rotation and give good thought to a bit of soil remediation along your philosophy lines. I am a strong advocate of soil testing so as to have a known starting point, rather than the traditional; a bit of this, a bit of that. There are tips in the two references, but above all, do try more resistant plants with that soil test. FWIW, these are dot edu sites, not dot com, so not as many granola group tales to sort thru. Good luck |
Tomato Problem
Thanks also to you David for your advice. I appreciate it.
Norman "David Hare-Scott" wrote in message ... Norman wrote: I have tomatoe plants that start off great, then when they are about 18 inches tall and quite bushy, the top leaves start turning black and curl up and die. This then gradually spreads down the whole plant and it then dies completely. What is the problem and how can I stop this spreading to my other tomato plants. My brother who lives 200 kilometres away from me is also having the same problem.with his tomato plants Advice would be greatly appreciated. Thanks. Norman This sounds like a fungal attack to me though I cannot say which one. Has the weather been very wet and/or humid lately? There isn't much you can do immediately except destroy the affected plants (burying away from the vege garden is good) and replant away from the infected area. Plant with wider spacing and tie them up religiously to allow air to circulate. Try other cultivars because some are much more resistent to fungus than others. Also be careful with watering. Try to keep the leaves dry and just water the roots and avoid kicking up mud with the hose. Drippers or soakers are good here instead of sprayers or hosing. David |
Tomato Problem
My ability to grow tomatoes in Adelaide, typically Grosse Lisse, got
worse and worse till I got virtually no crop at all. Apparently, this is caused by wilts, funguses, nematodes, etc., and happens in a lot of home gardens (even with rotation) and there's not much you can do about it apart from changing the soil or waiting a few years. I now grow only disease resistant tomatoes and get good crops again. Most of the seedlings show whether they're resistant or not. Maybe they don't taste quite so good, but they're still well ahead of store bought (wouldn't be difficult). Andrew Norman wrote: I have tomatoe plants that start off great, then when they are about 18 inches tall and quite bushy, the top leaves start turning black and curl up and die. This then gradually spreads down the whole plant and it then dies completely. What is the problem and how can I stop this spreading to my other tomato plants. My brother who lives 200 kilometres away from me is also having the same problem.with his tomato plants Advice would be greatly appreciated. Thanks. Norman -- Andrew Gabb email: Adelaide, South Australia phone: +61 8 8342-1021 ----- |
Tomato Problem
On 23/12/2009 10:40 AM, David Hare-Scott wrote:
Norman wrote: I have tomatoe plants that start off great, then when they are about 18 inches tall and quite bushy, the top leaves start turning black and curl up and die. This then gradually spreads down the whole plant and it then dies completely. What is the problem and how can I stop this spreading to my other tomato plants. My brother who lives 200 kilometres away from me is also having the same problem.with his tomato plants Advice would be greatly appreciated. Thanks. Norman This sounds like a fungal attack to me though I cannot say which one. Has the weather been very wet and/or humid lately? There isn't much you can do immediately except destroy the affected plants (burying away from the vege garden is good) and replant away from the infected area. Plant with wider spacing and tie them up religiously to allow air to circulate. Try other cultivars because some are much more resistent to fungus than others. Also be careful with watering. Try to keep the leaves dry and just water the roots and avoid kicking up mud with the hose. Drippers or soakers are good here instead of sprayers or hosing. David Yep David is probiscly right, but if you had planted a fungal resistant type, you may have avoided the problem. also antifungal sprays would also help. This needs to be applied when fungal problems are most prevalent. IE high humidity. This is caused by climate change, and we need to have the Copenhagen treaty signed before it will work. Ask David Hare Scott about this... Higher TAXATION WILL DEFINITELY HELP WITH THIS. |
Tomato Problem
On Tue, 22 Dec 2009 08:48:29 +1100, "Norman"
wrote: I have tomatoe plants that start off great, then when they are about 18 inches tall and quite bushy, the top leaves start turning black and curl up and die. This then gradually spreads down the whole plant and it then dies completely. What is the problem and how can I stop this spreading to my other tomato plants. My brother who lives 200 kilometres away from me is also having the same problem.with his tomato plants Advice would be greatly appreciated. Thanks. Norman Sounds like calcium deficiency. See this page I found, has good descriptions and photos. You may be able to recognise your problem from here. As an aside, I hbave started a small hydroponic system, and when checking the water Ph, it mentions that calcium uptake can be affected if your Ph is over the 6.0 ~ 6.5 range. Maybe you should check the Ph of your soil, and possibly also that water you are using. I have found that here in Perth. it is not uncommon for the scheme water to have a Ph of around 8.00, and I have tokeep adding adjusters to bring it down so the plants can make use of the nutients. Perhaps this may help your situation Tony |
Tomato Problem
Jonno wrote:
This sounds like a fungal attack to me though I cannot say which one. Has the weather been very wet and/or humid lately? There isn't much you can do immediately except destroy the affected plants (burying away from the vege garden is good) and replant away from the infected area. Plant with wider spacing and tie them up religiously to allow air to circulate. Try other cultivars because some are much more resistent to fungus than others. Also be careful with watering. Try to keep the leaves dry and just water the roots and avoid kicking up mud with the hose. Drippers or soakers are good here instead of sprayers or hosing. David Yep David is probiscly right, but if you had planted a fungal resistant type, you may have avoided the problem. also antifungal sprays would also help. This needs to be applied when fungal problems are most prevalent. IE high humidity. It goes to show I can't be wrong all the time. Clearly I am not a scientist. This is caused by climate change, and we need to have the Copenhagen treaty signed before it will work. Ask David Hare Scott about this... Higher TAXATION WILL DEFINITELY HELP WITH THIS. Local humidity is caused by weather. Whether the chance of the weather trending towards more or less humidity in a particular location over the next 30 years or whether it's because there is a wether standing over your tomatos is another matter. David |
Tomato Problem
I would have thought a better reply would have been the types of tomato
that are resistant to fungal attack. I will help he All you do is Google for the answer in future. Its easy enough to ask the right qeustion once you know the possible problem... *What is disease resistance?* A. Disease resistance is the ability of a plant to withstand attack from disease causing organisms such as bacteria, fungi, or viruses. The extent of resistance can vary from being strongly resistant to infection to being only somewhat more tolerant of the disease than standard varieties. Resistance is not immunity. Improper culture of a resistant variety may negate that resistance. A. Plant breeders have a tough job to breed disease resistance into crops because there are so many diseases and often several strains of a given disease. What is often done is to select the disease that causes the most problems and work on breeding resistance to that disease. Seed catalogs and packets indicate what, if any, disease resistance a variety has in descriptive text or with initials following the variety name. Disease resistance in tomatoes indicated by initials include: V - Verticillium wilt F - Fusarium wilt (F1, race 1; F2, race 2) N - nematode T - tobacco mosaic virus A - Alternaria alternata (crown wilt disease) L - Septoria leafspot This is something I didn't know either. Thanks for asking the question. On 7/01/2010 10:50 PM, Jonno wrote: On 23/12/2009 10:40 AM, David Hare-Scott wrote: Norman wrote: I have tomatoe plants that start off great, then when they are about 18 inches tall and quite bushy, the top leaves start turning black and curl up and die. This then gradually spreads down the whole plant and it then dies completely. What is the problem and how can I stop this spreading to my other tomato plants. My brother who lives 200 kilometres away from me is also having the same problem.with his tomato plants Advice would be greatly appreciated. Thanks. Norman This sounds like a fungal attack to me though I cannot say which one. Has the weather been very wet and/or humid lately? There isn't much you can do immediately except destroy the affected plants (burying away from the vege garden is good) and replant away from the infected area. Plant with wider spacing and tie them up religiously to allow air to circulate. Try other cultivars because some are much more resistent to fungus than others. Also be careful with watering. Try to keep the leaves dry and just water the roots and avoid kicking up mud with the hose. Drippers or soakers are good here instead of sprayers or hosing. David Yep David is probiscly right, but if you had planted a fungal resistant type, you may have avoided the problem. also antifungal sprays would also help. This needs to be applied when fungal problems are most prevalent. IE high humidity. This is caused by climate change, and we need to have the Copenhagen treaty signed before it will work. Ask David Hare Scott about this... Higher TAXATION WILL DEFINITELY HELP WITH THIS. -- |
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