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Western PA

Some of my leaves on two of my plants are dying. They seem to slightly wilt one day, then the next day the edges start to turn dark brown, then a day or two later they are totally brown and dried up.
Here is the link -http://www.bigpumpkins.com/Diary/DiaryViewOne.asp?eid=144212

8/26/2010 11:14:49 PM

Western PA

Here is what they look like later -http://www.bigpumpkins.com/Diary/DiaryViewOne.asp?eid=144213

8/26/2010 11:16:27 PM

Western PA

The problem is strictly the leaves, not the stalks.

8/27/2010 8:44:42 AM

Montgomery, IL

I have the same thing one one of mine??? I don't see any bug issue with the plant...

8/27/2010 9:59:16 AM

Farrell, PA

I'm having the same problem here Lee. Have you looked at the vinenear the problem? Mine is rottin looking. Definately doesn't look healthy. I'm gonna search around the board and see if can find what it is.

8/27/2010 10:40:39 AM

Western PA

Dustin, I did check the vines and the look very healthy. That is what is baffeling me.

8/27/2010 12:25:32 PM

Western NY

Same thing here.

Mature leaves, outer parts wilt and burn one afternoon as if they were young. Then they dry up and get crispy. No problems with the stalks. Lost the stumps on one plant - full of water (clear & non-stinky), and also had to drain the main vine out a few feet. This happened after the leaf symptoms had been going for a while. Plant #2 also needed a stump and main vine drain. So far stump holding together on that one, but probably not for long.

These two plants are right next to each other, two other plants showing mild leaf signs, but it really hasn't hit the rest at all.

8/27/2010 2:16:13 PM

huntsburg,ohio

i'm having problem too thought maybe downy mildew but don't know will start throwing everything but the kitchen sink at it.Jerry

8/27/2010 5:02:34 PM

Farrell, PA

Lee, I did a soil drench in the area of the problem and then sprayed a fungicide so We'll see what happens.

Pumpkin Kid, Did you happen to be a stop on the OVGPG Patch Tour this year? If so, man did it rain. If not, sorry lol.

Anyone figure ot what this might be?

8/28/2010 10:34:34 PM

Western PA

I got a e mail from a PA grower that sent me a link. It sounds like bacterial wilt from the description.

[http://vegetablemdonline.ppath.cornell.edu/NewsArticles/CucBW.htm

Recently there has been a dramatic increase in the occurrence of bacterial wilt, especially in pumpkin and squash. Initial symptoms of wilt are pale, wilted sections of leaves that are often associated with feeding injury (Figure 1). Symptoms of bacterial wilt progress from localized leaf symptoms to collapse of individual vines and eventually to plant death (Figure 2). The bacterium causing this disease (Erwinia tracheiphila) cannot be controlled directly with pesticides, therefore, management practices have targeted the insects that harbor and vector the pathogen, which are the striped and spotted cucumber beetles (Figures 3 and 4). Control is complicated because the presence of beetles alone is not indicative of an impending wilt epidemic (Figure 5). In the absence of the pathogen, a much higher beetle density can be tolerated by the crop. However, if growers wait until disease symptoms occur to treat the beetle vectors, subsequent control of wilt is erratic.]

I have been struggling with cuke beetles this season.
Lee

8/29/2010 9:55:43 AM

Farrell, PA

Lee, THANK YOU!!!! I have noticed CB's this year as well. I read that they carry diseases but didn't think they few I've seen would do that much damage....WRONG!! I have the spotted CB's here as far as I know. I'll be upping the spraying and see how it goes. THANKS AGAIN!!

8/29/2010 1:15:17 PM

huntsburg,ohio

i don't think you have bactreial wilt getting pretty late for that and on ag's it dosen't look the way its described.Jerry

8/29/2010 9:20:40 PM

Western NY

It's possible Lee, but I would think that if it were bacterial wilt, that the plant would completely dead within a week or so of onset of symptoms. The plants I have which are affected are still chugging along after more than a month of being affected.

8/30/2010 8:41:28 AM

Western PA

Whatever this is, it is moving fast. This plant is on the way out .I posted some new pics of the damage, but they are not up yet.

9/2/2010 1:40:55 PM

Western PA

I Have some new pics in my diary of my plant that is suffering badly. I am now leaning toward downy mildew like Jerry said.I did some more research looking at pictures and this seems to be the closest. The brown spots on the leaves are angular just like my melons had . This pic pretty much sums it up.Some yellow spots or areas first, then the entire leaf turns yellow. The original yellow spots turn brown, then the outer parts of the leaf brown and curl up.

Jerry, could you post a pic of your infected leaves ?

I looked at an old post (2009) from midnight gardener , and my leaves look just like his did.

9/2/2010 5:30:42 PM

Western PA

Here is the pic of mine http://www.bigpumpkins.com/Diary/DiaryViewOne.asp?eid=144881

9/2/2010 5:31:23 PM

Silsbee, Texas

Zappa,

Did you ever come to a conclusion on what this was?

10/28/2010 10:42:30 AM

Williamston, Michigan

Hey guys, did we ever figure out what this is? I was leaning more towards Vine borers.... I had the same problem last year in my Cucumbers, melons and my pumpkins. I am hesitant to plant this year as this took out 12 of my AG plants leaving me 2 in a very short period of time. This problem happens so fast I would think only preventive measures could solve this.

3/16/2011 10:18:39 PM