Paulzie32

So, This looks normal to everyone? On newer leaves, the spots appear light and then darken to the black or brown spots.
I've also noticed yellowing along the outer edges of the leaves on some of the plants, that I'm guessing is Potassium or Calcium deficiency. I've read on here, it's common in Florida.
Could these Black spots also be some type of deficiency?

__________________
Have: Mysore, Pisang Klotek, Rajapuri, a Pineapple flavored type (Pisang Raja?), Manzano, Veinte Cohol, Gros Michel, Gran Nain, Double Mahoi, Enano Gigante, Dwarf Cavendish, SDC, TT, SH3640, FHIA-18, a NOT FHIA-18 (?), FHIA 01, Pitogo, Blue Java, Dwarf Red, Dwarf Namwah, Tall Namwah, Orinoco (from 3 locations), Dwarf Orinoco, Cali Gold, Hua Moa, (Red?) Iholena, Dwarf Iholene, Dwarf Puerto Rican, Velutina and growing

trachcanman99

Have you looked at the underside of the leave? aphid and other small sucking insects hide under the leaf, get a 10x loupe and check the underside for small sucking insects. Or if the leaf is an old leaf it is starting to die off the plant will pull nitrogen from that leaf to use for newer leaves. And if it is an old leaf bacteria and fungus will start to attack it which would give you black spots. with the loupe and looking at the bottom of the leaf if it appears to be small volcano shaped structures with spores coming out you are looking at bacterial or fungal growth, I forget which. I never looked into pesticides for bananas so not sure if there is anything you can treat the plant with to kill off either.

__________________
if you can't eat it why invest all that work?

Paulzie32

I did look under the leaves and all along the leaves... No bugs :-( IF you open the first image in a new window, you can see the whiter spots are small triangles. Bryce pointed that out to me. Not sure what that means... Is that something noticed by anyone before?

It's not on all plants... only Hua Moa and and unknown Dwarf... namwah maybe.

__________________
Have: Mysore, Pisang Klotek, Rajapuri, a Pineapple flavored type (Pisang Raja?), Manzano, Veinte Cohol, Gros Michel, Gran Nain, Double Mahoi, Enano Gigante, Dwarf Cavendish, SDC, TT, SH3640, FHIA-18, a NOT FHIA-18 (?), FHIA 01, Pitogo, Blue Java, Dwarf Red, Dwarf Namwah, Tall Namwah, Orinoco (from 3 locations), Dwarf Orinoco, Cali Gold, Hua Moa, (Red?) Iholena, Dwarf Iholene, Dwarf Puerto Rican, Velutina and growing

Paulzie32

I have Fertilized and used a systemic fungicide.. I'll see if things improve.

__________________
Have: Mysore, Pisang Klotek, Rajapuri, a Pineapple flavored type (Pisang Raja?), Manzano, Veinte Cohol, Gros Michel, Gran Nain, Double Mahoi, Enano Gigante, Dwarf Cavendish, SDC, TT, SH3640, FHIA-18, a NOT FHIA-18 (?), FHIA 01, Pitogo, Blue Java, Dwarf Red, Dwarf Namwah, Tall Namwah, Orinoco (from 3 locations), Dwarf Orinoco, Cali Gold, Hua Moa, (Red?) Iholena, Dwarf Iholene, Dwarf Puerto Rican, Velutina and growing

Juicy Bananas

Possibly Boron. I have several parts of the yard lacking many nutrients. When I plant new banana keiki in these areas they often will do things like this.

I like to use Azomite plus the other stuff I've got around.