Tomato Spotted Wilt Virus (w/ Pix)

[barbamWY]

Put out some yellow sticky traps. I ordered 30 from Amazon. I've been catching little flies, mosquitoes and black dots which I think are baby thrips.
Barb

[ginger2778]

Originally Posted by barbamWY

Put out some yellow sticky traps. I ordered 30 from Amazon. I've been catching little flies, mosquitoes and black dots which I think are baby thrips.
Barb

Flies are super strongly attracted to yellow sticky traps, so that's a very good idea. Your little black spots might also be white flies although I don't know if they're prevalent in your area

[barbamWY]

Last year I took a sticky trap into the extension office and the diagnosis was baby thrips. This year I've planted part of my tomatoes in reflective mulch, put up sticky traps and sprayed with neem oil. I've going to spray again next week.
Barb

[ginger2778]

Originally Posted by barbamWY

Last year I took a sticky trap into the extension office and the diagnosis was baby thrips. This year I've planted part of my tomatoes in reflective mulch, put up sticky traps and sprayed with neem oil. I've going to spray again next week.
Barb

Horrible little nightmare rat ba$tids! I hate those things. It's war!

[Gerardo]

Originally Posted by ginger2778

Horrible little nightmare rat ba$tids! I hate those things. It's war!

Pyrrhic victories at best.

[DocBrock]

I've got 2 sticky traps on each plant and all are covered with flies such as leaf miners. About the beginning of may I had serious problems with thrips but haven't seen any recently on the traps. I'm pretty shocked how well these plants with the bacterial speck are growing and blossoming. I've got a beefmaster that has one several vines and the one that is most infected has about 12 blossoms that have bloomed since I noticed the symptoms, and this is woth 90+ degree days. We'll see if they can successfully set fruit, but the plant seems healthy otherwise. I do have a few plants, such as cherokee carbon and golden jubilee, that look pretty poor. The undersides of the leaves do have a shiny bronze sheen to them. Is that what people are referring to with TSWV?

[ginger2778]

The sheen can be from whiteflies, dont know if thrips cause it too. It's the silverleaf whitefly that affects tomato plants. I don't think TSWV has a sheen associated with it, just small dark spots without a yellow halo, and wilting that goes fast.

[DocBrock]

Originally Posted by ginger2778

The sheen can be from whiteflies, dont know if thrips cause it too. It's the silverleaf whitefly that affects tomato plants. I don't think TSWV has a sheen associated with it, just small dark spots without a yellow halo, and wilting that goes fast.

Sooooo many whiteflies....I quit caring. Not plumes when I shake plants but they're pretty well established now. Occasionally I'll hold a yellow card next to a plant as I shake it to watch them fly into it. Gives me a small sense of accomplishment. They really love my green beans, not quite as many on the tomatoes. Peppers are pretty loaded up too.

[b54red]

I just pulled one of my older plants set out in March with TSWV. It was loaded with small tomatoes but the TSWV hit it really hard and all the new growth was wilting and there was no way it was going to last long enough for those small fruits to finish growing and ripening. This makes three plants so far this year which is not so bad. Knock on wood.

Bill

[svalli]

Is this TSVW on my Santorini? Two weeks ago it was very bushy and well growing and now all the new leaves have these black spots and dried sunken areas. This appeared few days ago on couple of the stems and I thought that it was caused by the epsom-salt spray, but now it has spread on all new growth of this plant and other plants next to it are fine.

I had Verbena cuttings growing in the greenhouse this spring and I had to spray those frequently because of thrips. I read that TSWV affects also on Verbena, so that could be how I brought the virus to the greenhouse.

This is how it looked two weeks ago.


And this is the sad sight today.




Sari

[svalli]

I removed the diseased Santorini, but the noticed that next plant too has black spots on new growth.
TSWV spreading.jpg

Is there any way of preventing this from spreading?

Sari

[Gerardo]

I

Originally Posted by svalli

I removed the diseased Santorini, but the noticed that next plant too has black spots on new growth.
Attachment 82700

Is there any way of preventing this from spreading?

Sari

Before you 86 it provide a thorough dose of copper and wait and see, it may surprise you. It does not spread by contact, you have to reduce the thrips population

[svalli]

I do have a small packet of dicopper chloride trihydroxide, which I ordered from Estonia. I was going to try it against late blight in potatoes, since the small packets of Dithane earlier sold to home gardeners have been discontinued. The legislation changed and most agriculture chemicals are only sold to farmers, who have went through training and are certified. I have not been able to find any copper containing fungicides in Finland even before the laws changed, so I think that those are not normally used here.
I have to research more about this copper product, before I spray it.

Sari

[b54red]

Found another of my older plants with TSWV this morning and pulled it since it only had one decent fruit on it which was already blushing. All the new fruit that had set in the last week or so was obviously affected by the TSWV.

I agree it doesn't spread by contact. I have left TSWV infected plants in my beds for months before with no spread to the neighbors. I have only done this with very healthy large plants that were loaded with fruit and seemed to be resisting the affects of TSWV somewhat. Usually that is not the case even with large plants so if it is spreading rapidly on the plant and really slowing or stopping growth I pull it.

I can't believe you can't buy a simple copper fungicide. Most of them are considered organic. It seems if that is the case that the state is over zealous in protecting you from yourself. However a fungicide is not going to help you with TSWV.

Bill

[svalli]

Originally Posted by b54red

I can't believe you can't buy a simple copper fungicide. Most of them are considered organic. It seems if that is the case that the state is over zealous in protecting you from yourself. However a fungicide is not going to help you with TSWV.

Bill

The stuff which is available for home gardeners here has always been limited. Especially any biological or organic controls for plant pests and diseases has been hard to find. The consumer market for gardening products here is so small that it is dominated by few companies and the same products are then sold at every gardening center. Copper has been mentioned as fungicide at some writings about organic farming, but I have never heard of any home gardener here using it.

I got some effective microorganisms, which I activated by fermenting. I am not a true believer in that stuff, but I am now experimenting and spraying that on couple of plants, which started to show signs of TSWV. I know that it will not cure them, but as long as it does not hurt, I'll give it a try.

Sari