Return to the Vegetable Gardening Forum | Post a Follow-Up

 o
losing the battle again with cukes

Posted by njitgrad 6A/6B New Jersey (My Page) on
Fri, Jul 11, 14 at 8:04

I need to identify and eliminate the source of why my cukes keep getting the dreaded leaf spot. Although this year I have been very vigilant (applying an OMRI fungicide weekly and cutting off affected leaves) they are still getting infected despite limited fruit production and continued new growth.

Is it my soil? I NEVER water the garden at night. Only in the morning every 3 days give or take depending on the recent weather pattern.


Follow-Up Postings:

 o
RE: losing the battle again with cukes

Angular leaf spot is caused by a bacteria, so it will not respond to fungicides. It is probably established in your soil, which means resistant varieties are the way to go. There's a partial list at the link below.

As it is, your plants don't look so bad, and I'd let them bear the nice crop they are getting ready to produce and pull them out a little early.

Here is a link that might be useful: als resistant cukes


 o
RE: losing the battle again with cukes

I agree, those plants look pretty healthy. Curcubit crops are always a race between getting a harvest and plant death.

Still, I do see a sign of downy mildew, rather than angular leaf spot. This is a different, specific treatment problem, and whatever you've been using may not address it.


 o
RE: losing the battle again with cukes

Plantus - how do you tell the difference between Downy Mildew and Angular Leaf Spot. I went to the U of Va website and looked up fact sheets on both and both show yellow angular leaf spots as symptoms.


 o
RE: losing the battle again with cukes

yolos, I've been trying to figure that out as well....


 o
RE: losing the battle again with cukes

I had those same spots on my cucumbers early this spring. I took them into the county extension office and they said downy mildew. Of course it is hard to compare actually seeing the leaf and looking at a picture, so it may not be downy mildew.


 o
RE: losing the battle again with cukes

Cucumber have a short harvest life span, especially in hot weather. But as mentioned, your plant are not that bad. I would remove the badly affected leaves and continue treatment on schedule .

Also, I would sow more, right away. Cucumbers love late summer cooler weather.


 o
RE: losing the battle again with cukes

Yo, pathology guesses are guesses, but the original poster suggested a multi-year problem, and prolonged wetness was not an issue. Bacterial diseases run like wildfire for a very short time when the opportunity presents itself, so you often see spurts of damage. Either way resistant varieties will prevent problems. I only grow Little Leaf pickler these days because it's resistant to so many diseases (including bacterial wilt) and it's open pollinated and non bitter.


 o
RE: losing the battle again with cukes

Other than planting disease resistant varieties next year, is there anything else I could do to my soil in preparation for next season?

I wonder if moving it to the other side of the garden (which receives more sunlight earlier in the day) would be a better idea. This would burn off any condensation sooner each day and reduce the chances of mildew (if that really is what I have).

This post was edited by njitgrad on Mon, Jul 14, 14 at 10:27


 o
RE: losing the battle again with cukes

  • Posted by bart1 6/7 Northern VA (My Page) on
    Mon, Jul 14, 14 at 11:46

Maybe go for a second planting?

I started seeds last week for my replacement cucumber planting. They're just starting to come up now and they'll go into the garden in a week or so.


 o Post a Follow-Up

Please Note: Only registered members are able to post messages to this forum.

    If you are a member, please log in.

    If you aren't yet a member, join now!


Return to the Vegetable Gardening Forum

Information about Posting

  • You must be logged in to post a message. Once you are logged in, a posting window will appear at the bottom of the messages. If you are not a member, please register for an account.
  • Posting is a two-step process. Once you have composed your message, you will be taken to the preview page. You will then have a chance to review your post, make changes and upload photos.
  • After posting your message, you may need to refresh the forum page in order to see it.
  • Before posting copyrighted material, please read about Copyright and Fair Use.
  • We have a strict no-advertising policy!
  • If you would like to practice posting or uploading photos, please visit our Test forum.
  • If you need assistance, please Contact Us and we will be happy to help.


Learn more about in-text links on this page here