Any ideas what is wrong with my cucumber leaves?

[Guest]

SEE THE PIC:

[Derreck]

Are you using any pesticides? It looks somewhat like a chemical burn from either a pesticide or perhaps bug spray.

[Miranda]

If you are watering regularly look for squash bugs.. but really just looks thirsty.

[Brad]

Looks like they need water and nitrogen. And they need space. If they crowd one another this will happen. They need space and sunshine. Water them well but not so the soil is soggy. Plants breathe through their roots and if the soil is soggy they drown which could also cause this condition.

[Casey]

Is that just the bottom of the plant? Is there healthy new growth? Agree water and fertilizer. But there could be some fungus issues.

[Tammy]

Contaminated from the soil. I had the same problem. I cut off all affected leaves and put a cut up sheet on the dirt, so the leaves don't touch the soil or get splashed on it. Appears to have helped.