PlantLife Online

Answer

I have not heard of a pathogen with the symptom of red lines on the husk, the closest thing I can come up with is corn rust. Rust is actually a fungus that appears on the plant as oval or elongate brown pustules scattered over upper and lower surfaces of the leaves. The pustules rupture and expose dusty red spores. Most commonly found on the leaves of corn it can affect all parts of the above ground plant and cause loss in corn yield. If the leaves of your plant are not affected I would doubt rust is the cause. If the yield is good and the corn kernels appear healthy and unaffected I would say your corn is safe to eat. Compare your leaves with the photos below.