How do i rescue a dying banana plant? My banana plant has be healthy for the end two years and...

My banana plant has be healthy for the end two years and now it have turned yellow and looks so below par. It is not wilting but the leaves are starting to die. Is there anything I can hand over it to help?
How to receive rid of gnats?
Answers:    transfer the soil it got too raining and has developed root rot
alien soil a shot of fertilizer and back to a regular watering agenda