Pests and Diseases forum: Can anyone identify early TYLCV? (Tomato Yellow Leaf Curl Virus)

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Name: Dabe Nori
New Brunswick, Canada (Zone 4b)
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DabeNori
Jun 30, 2013 10:03 PM CST
Anyone have any experience with this virus and an eye for identifying it? Everything I read online about TYLCV tells me that there are only preventative measures, that the best and only remedy is to isolate and destroy infected plants before the virus can spread to new hosts via whitefly . I have some 50+ tomato plants out front (hence my worry). I've only seen signs like this (as in the photos) on my most mature tomato plants.

Its been very unusually rainy this spring and summer here in eastern Canada.

All plants are in containers.

The photo shows the foliage of a Super-Sweet f1 hybrid Tomato.
Thumb of 2013-07-01/DabeNori/04f851
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So Cal (Zone 10b)
Cat Lover Forum moderator Avid Green Pages Reviewer Garden Ideas: Level 1
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OldGardener
Jun 30, 2013 10:59 PM CST

Moderator

Welcome! to ATP!

I am sorry but I don't have first-hand experience with this. I am surprised, though, because we're taught in California that this virus is more of an issue in tropical and sub-tropical areas and in areas with a Mediterranean-like climate where the host winters over (we rarely get extended periods of true winter chill).

Have you ruled out an environmental reason for the leaf curl? I see that Super Sweet F1 is indeterminate and, according to Clemson, indeterminate tomatoes are more likely to develop physiological leaf curl than determinate ones - especially during this time of year (spring to summer transition). I am familiar with this type of leaf curl and I see in your post that your weather has been off....

http://www.clemson.edu/extension/hgic/hot_topics/2008/05toma...

Do you have an extension or farm adviser nearby? In California, UC Davis offers a test for Tomato Yellow Leaf Curl with results within 24 hours - perhaps someone in your area is able to do testing?

I apologize that I cannot be more of help. One thing that stands out to me, though, is that your leaves do not appear to be crinkled/crumpled. UC Davis lists "strongly crumpled" as one of the primary signs. I don't know if you have seen this, but here is a link to their guide and they have a downloadable brochure with several definitive pictures included (the link for the brochure is at the bottom of the page):

http://www.ipm.ucdavis.edu/PMG/r783103311.html

Again, I apologize that I cannot be more help... perhaps someone else will chime in with first-hand experience.
"In the end, it's not the years in your life that count. It's the life in your years." -Abraham Lincoln
Name: Dabe Nori
New Brunswick, Canada (Zone 4b)
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DabeNori
Jul 8, 2013 8:15 PM CST
Your post put me at ease enough just to wait it out and see if the problem would persist. and you're definitely right, It seems I am too far north to worry about such a thing.
Its been a week and a half, The leaf curl has lessened leading me to believe it was just physiological/environmental, the yellowing has remained mild and hasn't worsened, the plants are still bushy but the flowers have begun to fruit.
I think the Bushy plants are due to using a mycorrhizae growing medium.
...I thought I did the adequate research before posting... my apologies.

but now I know.

Thank you OldGardener.
Tip of the hat-- I tip my hat to you.


So Cal (Zone 10b)
Cat Lover Forum moderator Avid Green Pages Reviewer Garden Ideas: Level 1
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OldGardener
Jul 8, 2013 8:56 PM CST

Moderator

No need to apologize! I am glad that you brought TYLCV to everyone's attention and even more happy that your tomato plants are on the rebound.

Again, Welcome! to ATP. It is always great to have a new member posting.
"In the end, it's not the years in your life that count. It's the life in your years." -Abraham Lincoln

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