Re: Nematode infestation
Any possibility of overwatering or anything else that would rot the corm? I know your zone 10 but even a little lower temps can change how much water the plant uses. When banana corms or roots die they still have the tough string like inside of the root intact. The outer part of the root will slip off and leave that part. Kinda reminds me of what nematodes do.
From what I've seen with burrowing banana nematodes pictures you should be able to cut a root lengthwise and see alive tissue mixed with the black tissue. If all the tissue is black it's either rot or too late to check. Where all has your plants come from? I know banana nematodes are bad in the tropics but haven't read anything about them in FL. Just going off what I've read and seen in pictures. Hopefully its not nematodes and something else. I know they do a lot of damage worldwide including causing plants to topple over. Hopefully someone experienced with them will chime in. Keep us updated.
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