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Rudolph

See diary for pictures,
http://www.bigpumpkins.com/Diary/DiaryView.asp?season=2011&grower=46504&action=L

We've had tons of water and I've had 5 leaves rot at the stem in the past week all of them had tons of water in the stem,,is this gummy stem blight or just from to much water?? maybe the plant cant do nothing with all the water so it is storing it in the leaves which is causing them to rot???,,any opinions will be appreciated,,

8/3/2011 2:37:16 PM

ipswich, ma usa

Looks like a borer to me then rotted.

8/3/2011 2:43:41 PM

Rudolph

I thought that may be the problem too but I pulled another plant out of the garden not to long ago,,2 day ago,,,and I went though all the vines to see if there were any svbs and there were none,,,I no that's what it looks like but I'm pretty sure it's not,,

8/3/2011 2:50:22 PM

ipswich, ma usa

If you used merit then they are dead and all that you see left is their entry hole and where they ate till they died. The water then collected in the stems. Also I have seen this happen after heavy winds, the leaves get weak and small cracks appear, then water enters then rot. Just my two cents and 11 years worth of observations. :)

8/3/2011 3:24:30 PM

South of Buffalo

Your pic of the brown section on the stalk is almost exactly the same as several i have had. Also, I have lost leaves at the stalk vine junction. These have all been on my 1332 wolf which is a tall plant(maybe too much N)and the leaves looked fine, the stalk was the problem. The 1332 plant has damage due to its height(wind) and from me moving through the plant to spray. So, stress cracks and slow onset of rot may be the cause. I cut the stalk at the vine, wipe with alcohol and apply captan--seem fine after that
SVB--A number of the leaves I lost at the stem stalk junction were buried and weekly trizicide so I doubt it was svb..BUT I have used 2 drenches of merit so cant rule it out fully especially on the mid stalk rot... I would lean toward damage from wind or yourself if your moving around in the plant followed by rot. See if you can get new growth to fill in.

8/3/2011 4:06:30 PM

South of Buffalo

My 870 wolf plant same patch, blocked from wind by 8 foot privacy hedge, shorter stalks, same sprays with me not moving around in it as much has not had this issue to date.

8/3/2011 4:08:14 PM

Western PA

I had a plant that had the same thing last season.I may have had more than one problem, but did not do any tissue testing to confirm anything.After I noticed some leaves just like yours, I then noticed the main vine started oozing greyish liqued out at the main/secondary junctions. I have some pics posted in my diary last year, around August 11th .

Jerry Rose may have also had it in his patch.

I believe he said it is rhyz.... (can't remember the spelling of it.) I would try to contact him, because he had his problem corrected by a lab. He said it is treated by applying a chemical to the soil surface.
His board handle is pumpkin kid.

Keep us updated on this.
best of luck !!

8/3/2011 5:23:48 PM

perhaps Zappa is referring to Rhizoctonia

8/3/2011 6:38:06 PM

Glen Allen, VA

Unfortunately, I have a lot of experience with Rhizoctonia Solani in my patch. It does not look like that’s what it is but only a lab tissue culture would be able to tell you for sure. Below are pictures of what infected leaf stalks look like. I sent a sample to a plant pathologist at Virginia Tech last year and they identified it.

http://www.bigpumpkins.com/Diary/DiaryViewOne.asp?eid=164367
http://www.bigpumpkins.com/Diary/DiaryViewOne.asp?eid=164368


If it is Rhizoctonia Solani the link below shows the fungicides that are the best for controlling it.

http://www.gpnmag.com/Rhizoctonia-Rising-article5295

Rhizoctonia Solani is the fungus that causes Brown Patch in lawns. I noticed that my lawn had brown patch really bad this year which could be how I keep getting my patch infected. Walking through the grass to get to the patch.

8/3/2011 8:12:24 PM

Marion WI

my vote is vine bore

8/3/2011 9:54:51 PM

Upa Creek, MO

I say vine borer entry wound as well. I have many, and most don't make it but sometimes I find them a couple inches past that wound and pull them out.

8/3/2011 10:14:03 PM

Frankfort Ohio

i have same thing only found it on 5 stalks all below surface sent tissue sample in today will let u know

8/3/2011 10:24:50 PM

Springfield, Missouri

Im with Jeff, I have had this in my patch due to high wind and long stalks. I have had SVB before and there is a noticeable difference between the two. When I cut the leafs some have that yellow color you are seeing along the entire inside, with Svb yellow pulp is expelled where they bored into the vine. Leafs look fine until the stalk breaks due to disease.

Logan.

8/4/2011 2:48:48 AM

Rudolph

dpriceute Your pictures are aerially similar to mine,,,
But then Jeff brings up a good point. I've had big storms go though almost every other day for the past 2 weeks with high winds(that's what I was hoping the cause was) ,,,I guess I'll let you guys no what happens in a few days after everything drys up,,if it keeps rotting ehh,,,I'm screwed..

Thanks for everyone's input
Josiah B.

8/4/2011 3:12:48 AM

Ireland

Josiah my guess would be too much water due to the storms.
Micheal

8/4/2011 6:38:50 AM

Long Island,New York

rhysoctonia and maybe fusarium.....test it. Any mycillium inside stalk?

8/4/2011 6:48:19 AM

South of Buffalo

Hmm, i did see mycillium in several of my stalks but this was in stalks that were clearly damaged for a prolongd period(weeks maybe) and it did not reveal itself till some storms that we had with high winds and the stalks collapsed. My guess is that theres lots of soil disease that is opprotunistic and given an access will manifest itself regardless of chemicals applied. The stress cracks could be the access?
My 1332 also has what i would call weak stalks and thin vines compared to the 870 which is very robust(everythings thick).

8/4/2011 8:58:51 AM