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Milky Way

Hi,
who knows the disease on the picture?

http://img269.imageshack.us/img269/3294/disease.jpg

It's at another growers pumpkin not at my.

Thanks
Stephan

5/20/2009 5:34:57 PM

Windsor, Ontario, Canada

This is a complete guess, but...

It looks like the leaves are drying out. Could be some kind of sucking insect like an aphid or something. Look on the bottoms of the leaves. Also, tap over a sheet of paper and see if anything lands on the paper.

5/20/2009 8:04:37 PM

Ohio

looks like some kind of pesticide burn to me. what have they been using on their plants, you know?

5/20/2009 9:17:46 PM

Georgia

Some kind of burn probally not a disease....what do the rest of the leaves look like?

5/20/2009 9:23:25 PM

Back Yard

Stephan,
I have seen something very similar to this on my horseradish plants, in that case it was actually a sun burn made worse by water. Looks to be very close to what you show in that pic. Got real sunny and hot here hith a 30 degree jump in temp over one day. Plant went flat and all the larger leaves that were sun exposed were hit.

5/20/2009 10:10:06 PM

Ctpumpkin@optonline.net

Definitely spray injury. Might be salt or simply heat related.

What was sprayed on that plant? What time of day?

5/21/2009 5:37:24 PM

Milky Way

It was not sprayed on the plant, maybe the dew from the hoophouse was dripping on the leaves.
I think too it's a kind of burn.

5/24/2009 12:21:49 PM

Ctpumpkin@optonline.net

The plant is still under hoops? Yes - heat, but there is also the possibility of accumulated ammonia. If the hoop-house is tight & the soil had manure added then we might have ammonia damage.

5/24/2009 3:53:50 PM