Tomato problem.

I'm wondering if anyone can take a shot at this. So I can figure what to do.
My friend has a tomato problem. It looks like its the second year and its starting again.
He told me. Last year his plants all died after the leaves started turning yellow and worked their way up the plant. And the plants all turned black. He believed he over watered them and killed them. I never saw them.
I was just over there checking his plants out. The plants are about 2 ft tall. Probly been in since may.
There's a few leaves and stems turning yellow. Near the bottom.
One sucker leaf was completely yellow , right in the middle of an all green section.
Another stem was all turning yellow.
The leaves are turning yellow between the veins .
He is not overwatering them.
I tested his soil earlier this year and it was nutrient good.
And he bought new soil and its in 6 inch raised beds .
And all the leaves on the whole plant are curling their edges up.
That leave turning up thing rings a bell , I know it means something. but I cant remember what it means.
He's got my garden problem book, and he mentioned , he read that smokers aren't supposed to touch tomato plants.
But he has.
I know a little bit about wilts , viruses and such.
I was leaning that way.
Its just my tomatoes never had problems in the last 20 years or so. So its hard for me to help him.
I appreciate the input.
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wrote:

It sounds like early blight but to make a better diagnosis look here. http://aggie-horticulture.tamu.edu/publications/tomatoproblemsolver /
I find the site very helpful. I just sprayed my tomatoes for early blight a couple of days ago.
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Not saying it is a magnesium deficiently but I sort of remember yellow leaves being a sign.
http://en.wikipedia.org/wiki/Magnesium_sulfate#Applications
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Bill S. Jersey USA zone 5 shade garden

http://honest-food.net /
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On 7/4/2011 2:31 AM, DogDiesel wrote:

I've heard of tobacco mosaic virus but have never seen it.
http://vegetablemdonline.ppath.cornell.edu/factsheets/Viruses_Tomato.htm
Don't think it is calcium deficiency as this shows up as blossom end rot.
Leaves on my plants near bottom turn yellow and I remove stems but think this is normal. I've been getting good tomatoes in my planters on my deck.
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Reads as if he has everything. Maybe these will confuse the issue further : http://vegetablemdonline.ppath.cornell.edu/DiagnosticKeys/TomLeaf/TomLeafKey.html
http://aggie-horticulture.tamu.edu/publications/tomatoproblemsolver /
http://planthandbook.tamu.edu/Texlab/Vegetables/veg6.html#Tomato
http://www.extension.iastate.edu/publications/pm1266.pdf
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Derald
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Have a friend with the same problem, be interesting to see if it has the same cause. The plants are from seeds.
Zone 6 NY / LI
Cheers
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Mineral deficiency? I had a fungus, that seemed to abate with the copper soap anti-fungus treatment. Caused rust spots on the leaves. I just discovered aphids and those little green bugs on a extra plant I had in a pot. I have resorted to local Sevin treatments on the non-flowering plants.
I do see some leaves curling under, and branches that are not fully developed. Some I picked off.
But no Yellow leaves here yet.
Cheers
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You couldn't use soapy water, or lady bugs? You had to nuke them? You know Sevin kills pollinators, huh?
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