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France

Hi,

I got a disease, but I m not sur what is it and what to do to cure it. More and more leaves are getting sick.
Any help plz

http://www.bigpumpkins.com/Diary/DiaryViewOne.asp?eid=226064

http://www.bigpumpkins.com/Diary/DiaryViewOne.asp?eid=226065

Thanks

8/15/2014 6:06:59 AM

Bethlehem CT

Hi Mehdi
I have not seen that one yet. What I would do is to cut off all sick leaves and vines, then spray with a broad spectrum fungicide. I know you try to grow organically, but it may be worth it to use something like a chlorothalonil or mancozeb to save your plants.

8/15/2014 5:11:07 PM

Western PA

The brown leaf veins may be bad news, possibly meaning a systemic problem. I believe i have seen pics of that before, but can't remember at the moment what it may be.
I would take off 2 leaves and touch the two broken off areas together. If the liquid strings when you pull them apart, that would be gummy stem blight.

Are the melons still growing good ?

8/15/2014 6:42:09 PM

Bowdon, GA

what does the stump look like

8/16/2014 1:04:55 AM

France

Thanks Guys.
Actually, the sick leaves are only on the melon vine. Fruit is still growing but really slowly.
Jake, stump is looking good.
I will cut a couple of leaves and see what happens.

8/16/2014 3:58:12 AM

Bowdon, GA

Doesn't look like GSB to me. You will usually see stump and stem cracking and leaking along with lesions on the leaves with it. Have the plants wilted any on hot days? I do agree that it is not good if it is showing up in the veins.

8/16/2014 11:07:41 PM

Muddy Waters

Sorry I cant offer much help,never had disease issues with melons.

8/17/2014 7:05:49 AM

France

I cut a couple of sick leaves, nothing wrong with the inside vine, liquid is just normal.
No wilting at all on hot days Jake, just normal.

Still can't find what's that disease.

8/18/2014 3:20:08 AM

Williamsburg,KY

Mehdi, here in the States we have plant pathologists connected with Land Universities. Im sure you can find one close to you. Contact them and see what they can find. Good luck.

8/18/2014 7:59:22 AM

Bowdon, GA

Thats probably your best bet to get it tested.

8/19/2014 12:29:37 AM

France

After hours of research, I believe I finally found the disease : In french it's "Chancre gommeux sur tige" latin name is Didymella alias "gummy stem blight"

Then I found an organic product to prevent and cure it : Prestop. By the way, that product fight also Pythium, Phytophthora, Rhizoctonia, Fusarium, Botrytis, Didymella, pourriture grise.

It 's Gliocladium catenulatum souche J1446

8/19/2014 5:21:19 PM

Bowdon, GA

Agrifos will also help

8/19/2014 11:20:46 PM

Garner, NC

so will Switch

8/20/2014 9:06:25 AM