Q.What disease or problem does this cucumber have?
I saw these types of leaves on my plants and I was wondering what problem this is.

Downtoearthdigs
Answered on June 30, 2019
This looks like Angular Leaf Spot.
This article will help you.
https://www.gardeningknowhow.com/plant-problems/disease/angular-leaf-spot-on-cucurbits.htm
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