What Are the Small Black Spots on My Squash Plants?

Question

I have small black spots on my squash plants. They also have yellow leaves and look like they start to die from the base up. They have a kind of a powder on the leaves also.

Answer 1

This sounds like Septoria leaf spot. This article will help you:
http://vegetablemdonline.ppath.cornell.edu/factsheets/Cucurbit_Septoria.htm