Can you please specify which crop it was associated with?

I thing its Rhizopus sp.

I honestly dont think its Rhizopus, because they are aseptate, whereas this is septate. The culture seems like Aspergillus to me, But the microscopic image resembles a lot like Oedogonium anomalum, its a filamentous microalgae. I could be wrong as well.

According to me,this is Rivularia , a green algae.

Not a good enough picture, or detailed description, to draw any conclusion.