Fanleaf virus or herbicide damage

[BigH]

I am getting this on some of the new growth. Here's another image.

That definitely looks like 2,4-D damage. The Iowa State viticulture specialist recommends not pruning off damaged tissue. He claims that it increases the metabolism of the herbicide.

My edelweiss got hit pretty hard last year, but it still produced a large crop. I would have thinned it a bit more in hindsight. A lot of the canes did not harden off adequately in the fall. I thought that would set me back this year, but I seem to have a decent crop coming along and the vines look like left field at Wrigley.

H

 

[Dennis Griffith]

That definitely looks like 2,4-D damage. The Iowa State viticulture specialist recommends not pruning off damaged tissue. He claims that it increases the metabolism of the herbicide.

My edelweiss got hit pretty hard last year, but it still produced a large crop. I would have thinned it a bit more in hindsight. A lot of the canes did not harden off adequately in the fall. I thought that would set me back this year, but I seem to have a decent crop coming along and the vines look like left field at Wrigley.

H

I don't prune off damaged leaves/canes typically. I'm of the mind set that if the vine wants to get rid of it, it will. So I don't let the cosmetics of it bother me. I actually am relieved to think that it is herbicide damage instead of something like GFLV.

 

[treesaver]

I've got several concord vines that look like that every summer. They grow ot in the spring looking some what normal, then take on that fan look to all the new growth. I assumed it was herbacide damage, now I wonder. A much more serious issue has manifested here of late, though. Had a neighbor to the west die this spring, and the fellow that rented his ground quick bought it....a long story. He had it sprayed about a month ago, with an airplane. Since that has happened, Ive got a bunch of trees that have the leaves burned on the west side, and all my grapes on the place, with a few exceptions, have had all their growing tips bunt off. I am really worried about the second leaf verona that was training to trellis, as they have just been sitting there, no new growth, and the ends that were being trained to TWC, some have been burned back ten inches or a bit more. I really don't know what my next move will be, but I'm considering contacting a lawyer, but dispise lawyers as much as I do garden pests, so I may be out of this game yet. Sad state of affaires, considering all the work I've put in getting to this point. I didn't mean to hyjack your thread with my problems!

 

[Dennis Griffith]

I've got several concord vines that look like that every summer. They grow ot in the spring looking some what normal, then take on that fan look to all the new growth. I assumed it was herbacide damage, now I wonder. A much more serious issue has manifested here of late, though. Had a neighbor to the west die this spring, and the fellow that rented his ground quick bought it....a long story. He had it sprayed about a month ago, with an airplane. Since that has happened, Ive got a bunch of trees that have the leaves burned on the west side, and all my grapes on the place, with a few exceptions, have had all their growing tips bunt off. I am really worried about the second leaf verona that was training to trellis, as they have just been sitting there, no new growth, and the ends that were being trained to TWC, some have been burned back ten inches or a bit more. I really don't know what my next move will be, but I'm considering contacting a lawyer, but dispise lawyers as much as I do garden pests, so I may be out of this game yet. Sad state of affaires, considering all the work I've put in getting to this point. I didn't mean to hyjack your thread with my problems!

I'd be ticked off. What did he spray? I would do a few things. Here, I'd contact the township trustees, the county commissioners, and the sheriff's office to file a complaint. That all gets the issue on record. Do you have any sort of agricultural extension office? Not sure about Kansas, but I'd get their assessment on the cause as they could be an 'expert witness', if you go to trial. And if you feel ready for it, contact a lawyer and show him the ground work you've laid for a case and any results you have from any agricultural experts you can get to look at it. A big question is, 'Will you lose revenue due to his actions?'

 

[Johny99]

Wow! I’d at least make a phone call or write a nasty letter. I second letting the county/township know. It may be that he just didn’t know any better, and if you let him know he’ll not repeat. I live in a fruit growing r3gion converting to wine grapes. Both of my neighbor orchards are very open to communication. Of course, we also have strong case law for associated damage.

 

[treesaver]

Thanks for yor replys, guys. I've been sitting here mulling just what to do. I moved into this area about fifteen years ago, and one of the reasons I bought it was the CRP and grasslands around the place. I figured I was pretty safe, but can't do anything about when ground changes hands. The neighbor that bought the place mentioned, is young and gung ho, so I'm more than worried that it will get worse before it gets better. if he tears out the CRP across the road from me and plants beans or corn, and uses dicambia or 24D ready crops, My grapes will be toast, and thats the simple fact. The vines are a hobby, not a source of income, which makes it harder to scream damages, so I will visit the county extension agent tomorrow and see where it goes. Thank you for the suggestions. Lee

 

[Dennis Griffith]

2,4-D can drift a mile. I don't even make any attempt to find out where it comes from. The only serious thing it has done to me (I think) is to delay my crop. Not a good thing on the northern edge of the zone. Last year there was a lot of dicamba damage all around me.

If it can drift a mile and damage grapes like this, what is it doing to us?

 

[garymc]

It's a plant growth hormone. Good question. Maybe something, maybe nothing.

 

[Zintrigue]

Curious potential grape grower here. Are the grapes themselves affected, or just the vines and leaves?

 

[Dennis Griffith]

Curious potential grape grower here. Are the grapes themselves affected, or just the vines and leaves?

Just the leaves, but untreated, it will affect your vine health and yield (grapes). Depending on the disease, it can kill the vine and spread to others. Good vine health = good grapes = good vine.

 

[grapeman]

Sorry to check in so late here, life has been a perpetual soap opera for the last year or so for my family.

I would almost guarantee it is 2,4-d or dicamba damage. The finger-like projections on the leaf edges are a tell-tale sign of it. It is funny how some vines can be affected and others not. The wind is unpredictable and you only need to watch a smoke test in a wind tunnel to see that it generally travels in streams and not one big fog. That would explain why the area was not blanketed with damage.

 

[Dennis Griffith]

Sorry to check in so late here, life has been a perpetual soap opera for the last year or so for my family.

I would almost guarantee it is 2,4-d or dicamba damage. The finger-like projections on the leaf edges are a tell-tale sign of it. It is funny how some vines can be affected and others not. The wind is unpredictable and you only need to watch a smoke test in a wind tunnel to see that it generally travels in streams and not one big fog. That would explain why the area was not blanketed with damage.

I was hoping for herbicide damage vs. GFLV. I thought it was that from the beginning, but I came across some articles that showed some GFLV leaves and their looked similar. That unnerved me a little as that is a nasty disease and I want no part of it. I've seen the pictures of CA where they have stripped out the vines and then left nothing. I don't know if they are fumigating the soil or just letting it sit idle. I understand GFLV can stay in the soil for 2 - 3 years. Thanks for you response. I like your site.

 

[KevinL]

I've got some random vines that are coming up with the exact same symptoms as yours. Curling yellowing leaves along with fan leaf looking ones for newer growth. My nearest farm field is a mile away, and there are plenty of trees to act as wind breaks between here and there.

I know my Neighbor uses 2-4 D herbicide, but only uses local sprays close to the ground. I've let him know that 2-4 D is deadly to the vines, so he's pretty careful with it. I'll check with him to see if he sprayed a little higher of the ground on a windier day. I'm thinking that perhaps some of the landscapers for the commercial property behind the vineyard are using weed and feed that might have drifted over. I may have to send a polite letter asking them to go easy on the sprays closer to the vineyard.

You're right about it being pretty random. It's just 4 out of 200 or so that are showing any signs of herbicide damage. It must be such a small amount getting in or I think I'd be seeing wider damage. But I suppose it just takes a small amount to turn a healthy vine into a sickly looking thing.

 

[Dennis Griffith]

I worry about the systemic effect of the 2,4-d. Just a few leaves is one thing, but if it has a negative effect on the entire vine, that is bad. So the question is, how much is too much? I suppose time will tell. And will it be residual enough to affect the vine next year?

 

[treesaver]

Well I thought I'd bring you up to speed on my damage. I have two two leaf verona vines that are toast, and expect to prolly lose most of the rest. It has been about five weeks since the spraying, and my older concord and cataba vines look bad. One vine in the middle of my nortons is dead, and there has been no new growth on most of the vines. I found out tonight what they sprayed, 20 lbs of chaparral and 41 gallon of freelexx, neither of which I have ever heard of before. Talked to the Co Extention lady, she said to file a complaint with the Ks Agriculture/ pesticide application complaint organization. She said they will come out and take tissue samples to cofirm the damage, and we will go from there! Wish me luck!

 

[Dennis Griffith]

Well I thought I'd bring you up to speed on my damage. I have two two leaf verona vines that are toast, and expect to prolly lose most of the rest. It has been about five weeks since the spraying, and my older concord and cataba vines look bad. One vine in the middle of my nortons is dead, and there has been no new growth on most of the vines. I found out tonight what they sprayed, 20 lbs of chaparral and 41 gallon of freelexx, neither of which I have ever heard of before. Talked to the Co Extention lady, she said to file a complaint with the Ks Agriculture/ pesticide application complaint organization. She said they will come out and take tissue samples to cofirm the damage, and we will go from there! Wish me luck!

I do wish you luck. Your issue could easily be ours. I have been watching a plane that appears to be a crop duster type flying in the area. I hope they don't do aerial drops of broad leaf killers and they are only dusting with pesticides. Good luck with the filing!

 

[Johny99]

Good luck in your quest. Quite a bad scenario you describe.

 

[Karl]

Looks like 2,4-D or Dicamba damage to me. What is growing around you? And have you used any lawn chemicals?

Agree, that is 2,4,D damage. 2,4,D can easily drift, so farmers or residential sprays can affect you even if the neighbors are far away.

Also keep in mind that some varieties are sensitive to 2,4,D while others are not, and it also affects new growth, so old growth is unaffected. Glycophosphate is oily/heavy and does not drift very well, besides if you spray it on green leaves the vine is toast. I typically have lots of 2,4,D damage since i grow my grapes in the city and careless home owners use the stuff on windy days. I can smell it in the wind now.

 

[Karl]

I should add that your 3rd picture of the "deformed" stem doesn't look deformed to me, i see that all the time when the tips of some shoots gets damaged and a Y forms as a result.

 

[Dennis Griffith]

I should add that your 3rd picture of the "deformed" stem doesn't look deformed to me, i see that all the time when the tips of some shoots gets damaged and a Y forms as a result.

Thanks for your input. I suppose I was a little paranoid about having GFLV. We put so much work into growing vines and something like a virus or drifting herbicide just makes us a little 'unhinged'..