proletariatcsp

It looks strikingly similar to mine. Sigatoka seems to be a real sensitive topic lately, so, I will keep my opinions to myself. Your newest leaf looks great so I would follow with "Lorax's" advice and remove the entire leaf and dispose of it far away from your plants or compost pile. There is something streaking your leaf, but some of that browning is also from the wind damage.

These problems seem to be compounded by extended periods of overcast and rain which allow some diseases to thrive. I can't tell from you pic, but if you haven't already mulched around your banana, doing so now will greatly help to reduce future diseases spread by host plants growing around the psuedostem. Mulch a good 2-4 inches deep and 3-4 ft out to control the weeds and grass.

Good luck, and I wouldn't worry much because its warm again and your banana should quickly outgrow the problems from early Spring.

Chris P.