supermario

It's my understanding that sigatoga is NOT lethal even if left unchecked. I have sprayed in the past with fungicides just to ensure the upper leaves stay healthy, but I usually see the lower leaves develop yellow and black spots before dropping..or before I cut them. Now if you see the signs on all leaves of the plant, I would imagine that this would affect fruit production.... just a guess though.

Now, I have a question about sigatoga. It seems as though the problem develops on it's own in addition to being infected by other plants. I think...and again, this is just a guess since I am no expert...that heat and humidity contribute to the development of the diseases... like anthracnose in Avocados and Mangos here in FL.

So, my question is...Have any of you seen symptoms of sigatoga on trees grown in a greenhouse?

Also, please feel free to correct me and add information on the subject.

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.