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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