I must have the wilt!

[pinklady5]

I have another photo in the NJ Gardener thread but here's a photo of what I've been pulling off from most of my potato leaf varieties, Terhune and Earl's Faux. They pop up in less than 24 hours and the foliage that's infected wilts. This year's progress has been disappointing to say the least, last year I had no issues except for a little bit of early blight which I was able to control.
tomato foliage.jpg

[Paradajz]

hi.

it's true, such chlorosis could have been caused by at least 2 types of wilt.
but it also could have been caused by at least 3-4 types of insects, 2 types of Mold, 2 types of Mildew and a couple of nutrient excess disbalances, and finally even by some herbicides damage
actually, with such a speed of symptoms progress the probability of a wilt there is fairly small.

anyway, some overal plant's photos and significantly more thorough descriptions would help

br,
ivan

[pinklady5]

Ivan,

Thank you for replying. It's about to rain (again) so I'll will shoot more photos of the plant tomorrow. Here's basically what's going on the with plant. I see no signs of infestation. A few aphids here and there but nothing to be concerned about. There is no fruit set at all. Blossom drop and some black specks on green outer leaves of the buds and flowers that are still there. The rest of the plant looks healthy but every day I find new random yellowing on any given part (low to about 1/2 way up a 3 foot tall plant.) What does get infected wilts with some brown edging but I usually pull the leaf before it gets to that stage now. Never grew Terhune before but both show symptoms and are the smallest in the garden. It has rained here every night so spraying isn't even possible. Hmmh.

[pinklady5]

Ok so I went out in the garden today and found more infected foliage. Here are the photos. The disease is up midway up most of the plants. Yellowing with brown edges and dark brown tips as well and then they eventually wilt.

5 potato leaf varieties are infected in basically the same area of the garden.Photo Jun 30, 4 50 40 PM.jpg

Photo Jun 30, 4 50 58 PM.jpg

Photo Jun 30, 4 51 35 PM.jpg

Photo Jun 30, 4 51 51 PM.jpg

Photo Jun 30, 4 52 17 PM.jpg

Photo Jun 30, 5 00 04 PM.jpg

Photo Jun 30, 5 05 07 PM.jpg

[Paradajz]

hi again.

sorry to bother you more, but i'd really like to see some photos of flower buds and new growth of your plants if possible, and some back sides of infected leafs also. i know, i always ask to many questions.

also, if you could find a leaf with those unclear ( indefinite ) yellow areas, such as the leaf on the first photo you posted ( ID 35261 ), and put your finger on the yellow area to check if it's ''watery soft'' or firm, than check the rest area of that leaf in the same manner, it would be great

what are the temps over there, and what fungicides you got available?
if you got some copper you can't miss if you use it at max. recommended dose.

[pinklady5]

Forgot to upload these. I don't recall the leaves being watery soft but rather a dry wilt. I will have to let some of the foliage to proceed a little more before checking again.

Photo Jun 29, 11 39 41 AM.jpg

Photo Jun 30, 4 53 13 PM.jpg

[Paradajz]

interesting, on the other thread Naysen was constantly seaking for a Powdery Mildew on his plants while he in fact had a Wilt all the time, while here you seak for a Wilt while you most probably deal with the Mildew... maybe you two could swamp?

if you can get it, i would recommend Myclobutanil at max. dose ( +10% , not kidding ) + 0.25% mancozeb mixture, twice in ten days, but also an application of copper at regular dose in between ( on the fifth day after the first mixture spray ), to cover for a possible secondary you could have there.

br

[Paradajz]

p.s.

and if you had a substance named Pyraclostrobin to add to the mixture, then you'd totally close the issue

just kidding, i know that such systemics are hardly available, but i don't think you got such a terrible disease there, what worries me is that there is a chance there could be some secondaries which might be a significant threat to your plants- a touch of Mold and possibly bacteria.

[pinklady5]

Paradajz, thank you for taking the time to help. I still perplexed though as to what it is. With mildew or mold wouldn't there be visible spores at some point? There is none of that but we have had so much rain I could understand if it was either one of those. We had another 2 1/2 inches of heavy rain yesterday. There has not been one dry day to spray anything.

[RayR]

I don't see any wilting of the leaves from your pictures. It looks to me like the beginning of Early Blight and the possibly Septoria too along with it wouldn't be suprising. Those spots on the sepals could be either one. It would be too early in the life cycle of the fungi for sporulation to occur.

[pinklady5]

Hi Ray,

There was wilt when I first found the problem in the garden. I just don't currently have any photos because I've been removing the leaves. Do you think bleach spray is worth a try? With all of the daily rain, I just don't know what else to do and the disease is progressing high up into some of the plants.

[RayR]

I've only been using biological prevention and control measures for the last three years
I've never used B54Red's bleach spray treatment, but I think he has emphasized a few times that it is a last ditch resort, it's not something you would use for relatively minor fungal problems.
I don't know what this "dry wilt" looks like on your plants, but that's better than a water soaked type wilt I guess. At this point I would get a copper soap fungicide and spray when you get a little break in the weather so it can dry on the leaves. When dry it sticks pretty well and doesn't wash off very easily in the rain.

[z_willus_d]

Hi PL5,

If you have the 'Leveillula taurica' strain of Powdery Mildew, there may not be any obvious sporulation, mold puffs, etc. I'm certainly no expert, as Ivan has proven, but with a lot of rain, it's certainly one plausible explanation for what you're seeing in your garden.

Good luck,
Naysen

See:
http://ag.arizona.edu/plp/plpext/dis.../tomato/pm.htm
http://www.ipm.ucdavis.edu/PMG/r783100411.html

[pinklady5]

I'm convinced that is must be some type of mold or mildew problem. The wilting problem still puzzles me but I have not seen that in almost 2 weeks now so maybe it was a water problem from so much rain. If we can have one dry day here, I will spray. It's a shame, I have so many flowers on all of my plants and virtually no fruit set on my beefsteak plants.