1
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stem destroyed and leaf yellowish

Cucumber    india

Please see the attached images of my cucumber plants suffering from disease. What is the disease and how to control it.


Posted by: ramprasad (2 points) ramprasad
Posted: February 21, 2016




Answers

0
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The disease on your cucumber plant is downy mildew caused by Pseudoperonospora cubensis, a fungal disease.

Management:
1. Reduce moisture on plant canopy.
2. Keep the field free from weeds.
3. In future grow available resistant variety.
4. Spray liquid copper fungicide to control disease.


Posted by: Dr. Ravishankar Narayana (7 points) Dr. Ravishankar Narayana
Posted: February 22, 2016




0
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I also was inclined to think it was downy mildew. But I would like to see a closer up image to confirm this. It should have a whitish color. It should also come off in your fingers if you wipe it.

To me there is a possibility that this is a physiological stress. Upload additional images please.

Also, have conditions been wet there a lot?


Posted by: David Hughes (32 points) David Hughes
Posted: February 23, 2016




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