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Lockport, IL

My plant looked fine this morning, but apparently there was a service over spraying the lawn today and the leaves have begun to curl.

https://i.imgur.com/iLv70VG.jpg


https://i.imgur.com/AdtB6YN.jpg

This is the only spot that the pumpkin is in the lawn not walled off. It also started to rain lightly late afternoon.

I don't see any more of the plant curling up like this in the rain, and the leaves look perfectly healthy. The vine tips may have started growing curled in to the side instead of their usual hill shape too.

Am I being paranoid and this is normal in wet conditions? I've already put a call in to find out of they were stupid enough to spray the blocked off plant, or right near it, and what exactly they sprayed. If this is round up, will the whole plant die or is this recoverable?

I immediately sprayed the area down to dilute any chemicals that may have been on the leaves or vine when I saw / heard.

Is there another disease that may be at play instead?

7/15/2020 8:56:29 PM

Western NY

You'll know in a few days. Hopefully false alarm.

7/15/2020 10:36:38 PM

Lockport, IL

Update:

The plants have begun to show some brown spotting. This looks like it might be 24-d damage? I have yet to hear back from the service on what they used.

If this is 24-d, I read that it is a systemic? Will this spread? it appears to be locally contained to this small part of the vine near the lawn.

https://i.imgur.com/KmRx8Mn.jpg

https://i.imgur.com/qTaCA3S.jpg

7/16/2020 2:16:59 PM

South Dakota

I would cut off all affected vegetation the sooner the better. That looks exactly like spray damage, and yes it will translocate through the entire plant. Hope that's not the deal, also looks like sun burn, was it hot a hell today? Leaves that are not rooted at the node take a beating in the hot direct sun. Hopefully it's the sun. Good luck.

7/16/2020 6:32:33 PM

Central NY

The little pic looks like sunburn...well loosened soil will help with rooting...well rooted plants burn less...shade is the only way to prevent...misters can help...hard to tell from those pics where u are in the game. I’ll hope it’s sunburn for you which does stink but if the plant is growing well the sunburn will be a distant memory soon.

7/16/2020 6:52:41 PM

Central NY

*well rooted plants burn less....(and feed waaaaaay better)

7/16/2020 6:53:28 PM

Lockport, IL

All but the last node where the vine tip is were buried on the affected parts of the plant. Vines looked good in the morning, rest of the day was cloudy, so I do not believe that it was sunburn. Vines on the other side with new growth were not similarly affected.

I emailed a local university, and the specialist does think it appears to be herbicide drift. Still haven't heard back from what was put down.

https://i.imgur.com/KmRx8Mn.jpg
https://i.imgur.com/qTaCA3S.jpg

I decided to cut the vines as the browning got worse. I don't think these leaves would have recovered. If it is 24-d a systemic, will this have stopped it from spreading? or will it already be throughout the pumpkin? Rest of the plant is still looking healthy.

These newest picks may show the damage better. Is this maybe a disease instead?

I just put down systemic fungicide but have been regularly spraying non systemic. It has not been too wet yet here.

I still do not see much signs of insect activity besides some ants and small grasshoppers. There are a few holes on a couple of leaves, but nothing serious.

The vines I cut off were about 5 ft in total length. This was my first secondary, which I cut about 4 nodes down from the pumpkin I have growing on that secondary. I'm planning to keep both this and the main vine pumpkin which should open tomorrow for pollination. I only have the one plant, and want to have something to show on my first try.

Thankfully, I have 2 tertiarys that I let grow off of that secondary along that 4 node distance, and the tertiary at the fruit is also about 5 ft out also at a 90 degree angle.

7/17/2020 12:34:12 AM

Bethlehem CT

I am not sure how fast 2-4d translocates in the plants vascular system. It sounds like you have done everything you can. Just wait and see. If the new growth is normal, you are good to go. Pumpkins are very sensitive to broadleaf weed herbicides. THey might not even have to get sprayed directly to see damage. Next year I would forego the lawn treatments, or just do regular fertilizer. A pre-emergent crabgrass control should be OK in the spring time.

7/17/2020 7:03:24 AM

Western NY

It doesn't look like 2,4-D. Could be some other kind of chemical burn, though.

7/17/2020 8:23:01 AM