septorial spot ??

[brog]

Three days ago no sign of any disease. now what and what to do ???

[carolyn137]

Originally Posted by brog

Three days ago no sign of any disease. now what and what to do ???

I don't see any spots that look like Septora Leaf Spot to me, especially the leaf at the upper left that appears to have yellow leaf margins if the colors are correct.



Is this affecting all of your tomatoes?

[brog]

Thanks Carolyn, NO it is only on 5 of 50 plants. have any Idea.

[carolyn137]

Originally Posted by brog

Thanks Carolyn, NO it is only on 5 of 50 plants. have any Idea.

Since Septoria Leaf Spot is spread by wind and rain it usually affects all tomato plants in a given area. But varieties differ in their response to cold rainy weather so that could help explain why only five of the plants were affected.

But do let us know how the situation proceeds and this week it's supposed to get up close to 90 F so that may help.

[b54red]

It could be some fusarium starting to affect the plants. I see this pattern every year but since I have such bad fusarium it usually starts much earlier for me. I hope it isn't because there really isn't much you can do for it if it is but just hope it moves very slowly up the plant.

[brog]

Been trying to respond for past half hour,will try agian.
Its been 92 to 97 for the past 11 days and no rain. I have sprayed every 7 days, one week with Excel LG and the next with Actinovate. I started this program 11 days after plant out, I try to be organic , But want to save my toms.--------HELP

[brog]

Thanks Bill, didn`t see your message before I responded to Dr.C. I guess I`ll have to ask for help from up stairs.

[carolyn137]

Originally Posted by brog

Been trying to respond for past half hour,will try agian.
Its been 92 to 97 for the past 11 days and no rain. I have sprayed every 7 days, one week with Excel LG and the next with Actinovate. I started this program 11 days after plant out, I try to be organic , But want to save my toms.--------HELP

Bill, you asked if it was Septoria and say no it's not.

As to what else it might be other than an environmental condition there are others here more experienced with Fusarium than I am, but the pattern on the leaves doens't look to me like Verticillium either.

It's my understanding that Excel and Actinovate are best used for foliage diseases but if this is a systemic disease, then those would be of no use. Please correct me if I'm wrong about the major activity of Excel and Actinovate.

My friends in the south who have problems with Fusarium usually see it on all their plants in the garden, but B4 says his experience is otherwise.

Have you ever seen such symtoms on your plants before this season?

[Lee]

Fusuarium for me always effects an entire branch.... and it moves pretty
quickly, so the diagnosis is rather straightforward.
So, I'm thinking you've got something else (possibly nothing to worry about at this point). With the temps you mentioned, you would see whole branches wilting if it were Fusarium, at least in my experience.
And also, I have seen fusarium only hit a small number of plants in the garden.

Lee (Who's only having to deal with TSWV.... for now! )

[b54red]

Fusarium can move rather quickly especially once the plant is under stress. If the plant is large and healthy when it gets fusarium then it usually moves slower and it's first symptoms will be rather hard to spot if you don't see it frequently. Usually it will move up one stem and affect it more than the other stems but it will eventually get all of them. My Hungarian Heart still is alive though it showed the first symptoms 6 weeks ago and lost a whole main stem about a month ago. My Brandywine OTV looked good until a week ago then it started moving up every stem. The earliest symptom on the OTV was it just slowly stopped growing but still looked healthy for several weeks before the first yellowing occurred. The Gildo Pietroboni looked fantastic til about a week ago and now that huge beautiful plant is just a wilted withering mess.

What you have may not be fusarium but it very well could be. Watch for yellowing leaves beginning to move up one stem or another and if that stem eventually wilts then you can know for sure it is fusarium. Sometimes you can cut off a leaf stem and the fusarium browning inside the stem will be visable; but it is much easier to see on a larger stem.

Below is a picture of a German Johnson taken on May 8 and it shows the very beginning easily spotted signs of fusarium.

The second photo shows that same plant almost 3 weeks later; but it only lasted a little bit longer because the heat really shot up that week.

The third photo is of a Saint Lucie which had quit growing and was showing more definite signs of fusarium and it only lasted a few more days after the photo was taken.

The fourth photo shows an Ashleigh with the left main stem wilting fairly bad while the right looks better.

The last photo shows a closeup of leaves showing early first signs of fusarium taken in early May. I know it doesn't look like much but it was a sickening sight for me. That plant has been gone for over a week.

I don't know if these pics will help you or not but with the really hot temps we have been having down here the last two weeks the fusarium has really increased in severity. That could be why you are seeing it all of a sudden. I still have healthy plants surrounded by sick ones or empty spots where sick ones were. I usually get a few plants each year that don't die of fusarium until very late in the season and some that last til fall. I had 4 plants that lasted from spring til they were killed by frost.

[brog]

Thanks Carolyn, I`ve seen it on a few plants each year since I joined T`ville and G.W. Until then I didn`t pay attention to diseases, just picked what got ripe and didn`t worry about the vines. I never had enough of a problem for it to matter. But then I only grew Hybreds.
Thanks Lee, I hope you are right,I don`t see that have a choice but to wait and see. Dr. C wrote (above) that my spray program is for foliar disease not systemic.
Bill Thanks for the pictures. I have a better idea of what to look for now. If it fasuriam,out of 50 plus plants and the 20 I`m now planting for fall, I should be able to make a MATER sandwich.

[brog]

Here are some more pictures. I hope this helps you identify my probem.



Two more to

[feldon30]

I was going to ask if this was only on the lower leaves or throughout the plant. Since it's the latter, I'm rather stumped.

You have a good layer of mulch and good distance between your plants so not sure why your plants would succumb so quickly.

Fusarium and Verticillium are wilts, and I don't see much wilting.

[brog]

Thanks Feldon, the only wilt I`ve seen is when ( on purpose ) I let them get dry enough to start to wilt and they always buonce back quickly when I water them.. I looked this morning and see no advance on any plant. I`ll play the wait and see game thanks to every one for your input. I just LOVE this WEBB.

[brog]

should I cut off the yellowing leaves