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New Berlin, PA

Shows up on only one plant, on the first secondary on each side, but not on the main vine. Treated with manzate, and followed up a week later with eagle. Any opinions? Suggestions?

http://www.bigpumpkins.com/Diary/DiaryViewOne.asp?eid=279299

8/2/2017 11:33:20 AM

Lake Oswego, OR

Looks like older leaves succumbing to Father Time-

8/2/2017 11:54:36 AM

Morgantown, WV

Dan, I got a few leaves that look like that, I believe they originally got a little sun burned when I took my hoops off, then progressed to that, then a little worse. The last of em got trimmed off today.

Is it spreading through the plant, or did it show up in one spot and kinda stay there? Mine was only in the body of what was inside the hoop, like first 8 leaves or so near the stump. Never progressed to any other leaves or parts of the plant.

8/2/2017 12:15:57 PM

Colorado

I agree looks like older leaves that got sunburned a while back. As long as theres still a good green partial leaf I'd just keep a eye on them .

8/2/2017 6:51:39 PM

New Berlin, PA

Thanks for the replies. I have had some sunburn to a few leaves and to me this seems different. The brown starts out very small on an otherwise healthy leaf and grows to where most of the leaf ends up brown. Seems to resemble aged leaves. I just wasn't sure since I'm used to seeing aging leaves start on the main near the stump. The leaves in question are on the first secondary near the stump but NOT the main.

8/2/2017 7:04:05 PM

Mtn. Green, Utah

Call me crazy but it looks like early stage gummy stem disease to me. The reason I think this is that there are brown spots and holes in the middle of an otherwise healthy leaf surface, and sunburn generally affects the leaf edges first. This also explains why it is starting on the secondaries.

8/3/2017 1:32:57 AM

New Berlin, PA

Matt, thank you for your input. If I assume it is Gummy Stem, should I cut off the affected vines? Just cut off the leaves? Or something else?

8/3/2017 7:41:18 AM

Mtn. Green, Utah

Debacco has some good insight on diagnosis and treatment. Check this out.

http://www.bigpumpkins.com/Attachments/Leaf_Problems_Summer_2011.pdf

8/4/2017 11:22:46 AM