Cucumbers are already in trouble!

[Stvrob]

This morning I notice that the leaves of my cukes looked excessively moist and translucent in areas. Almost like the morning dew had penetrated the leaf tissue and turned it to soft mush. Now those areas have turned dry, tan, and crispy. The variety is called Diva. Anyone have any ideas about how serious this is? It has been great weather until the just the past three nights when it has dipped into the upper 40's lower 50's overnight and been foggy till as late as 10:30 am.

Here are pics from this afternoon.
I should note, I'm never very successful growing cucumbers, but my daughters keep insisting I try.

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[RayR]

It looks like Angular Leaf Spot

[Stvrob]

Originally Posted by RayR

It looks like Angular Leaf Spot

Interesting. I think Diva is supposed to be resistent to Angular spot. Plus, I didnt think it was very common in Florida. But it certainly does seem to fit the description!
One thing I read implied it can come from infected seed.
Thanks Ray

[Stvrob]

Delete duplicate post

[RayR]

Originally Posted by Stvrob

Interesting. I think Diva is supposed to be resistent to Angular spot. Plus, I didnt think it was very common in Florida. But it certainly does seem to fit the description!
One thing I read implied it can come from infected seed.
Thanks Ray

"Resistant" doesn't necessarily mean immune.

According to Cornell:

The bacteria can survive for possibly 2 years in soil or debris from diseased plants. It is also known to be associated with seed. Bacteria can enter through wounds or stomates. Moisture in the form of rainfall or relative humidity greater than 95 percent for several days is required for infection and later disease development. Dry weather for 2 weeks can arrest the disease. Controls include the selection of resistant cucumber varieties, use of disease-free seed, and a 2year rotation out of all cucurbits. Check with your seed supplier for the current list of resistant cucumbers. Copper fungicides can be applied to slow disease spread during particularly wet periods but can be dropped if dry weather continues for 2 weeks.

[Stvrob]

Originally Posted by RayR

"Resistant" doesn't necessarily mean immune.

According to Cornell:

Darn....this is on a spot that had nothing but grass until mid winter. It is supposed to be dry all week, maybe the dry windy weather will kill it off. I certainly dont want to chance this getting to my melons (which seem perfectly healthy at the moment).

[Worth1]

From my experience cucumbers do not like cold weather one bit.
Every time I try to plant early something happens right after a cold snap.
Its though the cold makes them sick or something.
If I wait they do just fine .
If I were you and they didn't get rid of this really quick I would pull them up.
And right now I would start more seeds anyway.


Worth

[Stvrob]

Originally Posted by Worth1

From my experience cucumbers do not like cold weather one bit.
Every time I try to plant early something happens right after a cold snap.
Its though the cold makes them sick or something.
If I wait they do just fine .
If I were you and they didn't get rid of this really quick I would pull them up.
And right now I would start more seeds anyway.


Worth

You may be right. I often have trouble with cucumbers, but usually it is overwelming mildew that sets in after the real heat/humidity begins. I was hoping to beat the heat this year by getting an early start. I doubt we will have much more of these cool foggy mornings though. March, April and the first part of May are typically our dryest months (fire season).

[Stvrob]

So far this angular spot bacterial leaf problem has not spread...with a few more days of dry weather, maybe it will give up and die.

[RayR]

I'm sure the bacteria won't die, they'll just go dormant until moist conditions return.