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Banana Plant Health And Maintenance Topics This forum is for discussions of banana plant health topics such as coloration issues, burning, insects, pruning, transplanting, separating pups, viruses, disease, and other general banana plant health and maintenance issues.


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Old 10-12-2017, 10:55 AM   #1 (permalink)
 
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Default I guess I am now a banana surgeon... Any ideas what it is?

For almost a year my Paggi banana has been making leaves pretty regularly, but they never got any bigger and the plant wasn't getting taller or thicker. I finally dug up my Paggi today and this is what I found. it was making a little pup so that it might survive because whatever is eating it almost made it to the growth tip. The pup was little but it had lots of roots and a nice little corm so I separated it since it seemed unharmed and put it in a pot. Here a few of many pics I took so you can see what I did. The first two are before surgery, after washing away dirt so I could examine the corm. The next two are during so you can follow the progress and see why I kept chopping away. The last two are the finished surgery showing how deep I had to dig (Almost to the growth point) and how I replanted it in fresh clean sand with some grub ex sprinkled around for good measure. I fertilized, watered and now we wait. All told I feel I cut away 3/5 of the corm that was left.
I hope someone can identify the problem and hopefully have a solution as I have a couple other bananas with similar troubles and I want to stop the spread to others as well... If it is some kind of grub, the grub x should work but I am not so sure of the safety of eating the fruits if used nearer flowering. I did it here because it's so small there will likely be little to none left by fruiting time.
Help me banana board people, you're my only hope..











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https://sputinc7.wixsite.com/covwc

Varieties I supposedly bought: Manzano, Cavendish, Blue Java, Sweetheart, and Gros Michel.
What it seems I actually have: Brazilian, Cavendish, Namwah, Dwarf Red, Gros Michel, Pisang Ceylon, Veinte Cohol and SH 3640, and American Goldfinger. FHIA 1, Paggi and FHIA 17... Always room for one more.
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Old 10-12-2017, 11:25 AM   #2 (permalink)
 
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Default Re: I guess I am now a banana surgeon... Any ideas what it is?

How is the drainage? Too wet can cause rotting, it's the time of year the plants start to slow down and use less water. Could be a lot of things, more ideas anyone.


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Old 10-12-2017, 11:37 AM   #3 (permalink)
 
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Default Re: I guess I am now a banana surgeon... Any ideas what it is?

My prayers and condolences for you. ...I couldn't figure out the problem with my 3 paggies and they were potted and inside last winter.
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Old 10-12-2017, 12:31 PM   #4 (permalink)
 
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Default Re: I guess I am now a banana surgeon... Any ideas what it is?

Looks like Banana Corn Weevil damage to me.
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Old 10-12-2017, 12:51 PM   #5 (permalink)
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Default Re: I guess I am now a banana surgeon... Any ideas what it is?

Alva is correct, it is Banana Corm Weevil, Cosmopolites sordidus.

Here are some resources:

Cosmopolites sordidus

banana weevil (Cosmopolites sordidus)

http://www.it2.fr/wp-content/uploads...ns_ANG_BD1.pdf
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Old 10-12-2017, 04:58 PM   #6 (permalink)
 
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Default Re: I guess I am now a banana surgeon... Any ideas what it is?

I was afraid it was some boring insect, I thought I read they weren't an issue this far north... Thank you. I will do much research. Anyone wanna gimme a shortcut and just tell me how to kill them around edibles? Any idea why some plants seem unaffected? My Brazilian grows like a weed and it's between 3 others with this same issue...
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Varieties I supposedly bought: Manzano, Cavendish, Blue Java, Sweetheart, and Gros Michel.
What it seems I actually have: Brazilian, Cavendish, Namwah, Dwarf Red, Gros Michel, Pisang Ceylon, Veinte Cohol and SH 3640, and American Goldfinger. FHIA 1, Paggi and FHIA 17... Always room for one more.
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Old 10-12-2017, 06:16 PM   #7 (permalink)
 
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Default Re: I guess I am now a banana surgeon... Any ideas what it is?

Quote:
Originally Posted by sputinc7 View Post
I was afraid it was some boring insect, I thought I read they weren't an issue this far north... Thank you. I will do much research. Anyone wanna gimme a shortcut and just tell me how to kill them around edibles? Any idea why some plants seem unaffected? My Brazilian grows like a weed and it's between 3 others with this same issue...
Sorry it's not as simple as over watering.
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Old 10-12-2017, 06:46 PM   #8 (permalink)
 
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Default Re: I guess I am now a banana surgeon... Any ideas what it is?

Pheromone traps for use with banana weevil borer are useful tool for monitoring populations of banana weevil borer (Cosmopolites sordidus).
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Old 10-12-2017, 07:20 PM   #9 (permalink)
 
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Default Re: I guess I am now a banana surgeon... Any ideas what it is?

Use cut banana trunks split in half that are about a foot long. Its one of the only ways to bait and control them... Other than digging out the entire mat.

I lose a lot of my Polynesian mats due to these critters.
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Old 10-12-2017, 08:32 PM   #10 (permalink)
 
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Default Re: I guess I am now a banana surgeon... Any ideas what it is?

Quote:
Originally Posted by sputinc7 View Post
I was afraid it was some boring insect, I thought I read they weren't an issue this far north... Thank you. I will do much research. Anyone wanna gimme a shortcut and just tell me how to kill them around edibles? Any idea why some plants seem unaffected? My Brazilian grows like a weed and it's between 3 others with this same issue...

Use Diazinon at the base of the pstem and area around the base. Apply every 3 to 4 weeks until the adult is gone. ... Malathion & Triazicide may work too; I have to check their labels. ... Chems specifically registered for this insect, require an 'applicator's license'.
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Old 10-13-2017, 02:02 AM   #11 (permalink)
 
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Default Re: I guess I am now a banana surgeon... Any ideas what it is?

Those are a sure way to kill everything near your banana mat. I wouldnt recommend eating anything after spraying Melathion on or around it, either.
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Old 10-13-2017, 05:33 AM   #12 (permalink)
 
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Default Re: I guess I am now a banana surgeon... Any ideas what it is?

Has anyone tried nematodes to try to control them? They help for a lot of borers in the soil. Just an idea....
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Old 10-13-2017, 05:50 AM   #13 (permalink)
 
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Default Re: I guess I am now a banana surgeon... Any ideas what it is?

Quote:
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Those are a sure way to kill everything near your banana mat. I wouldnt recommend eating anything after spraying Melathion on or around it, either.
'Malathion is a broad-spectrum chemical pesticide that is used to control a wide range of insects on a variety of vegetables and other plants. It is registered for use on food, feed, and ornamental crops.' Malathion has been in use since the 1950's. So I'm sure you have eaten vegetables that were treated with it. ... Malathion has a half life of 7 days. Use as directed per label.

With some insects you don't dick-around with biological & organic controls. You risk losing all your nana plants with to the insect & grub infestation. ... With mature nana plants/corms, this represents 2 & 3 years of your labor to grow or to re-grow new plants due to the insect infestation losses.

After eradication, establish biological & organic controls to help keep the insect from returning.
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Old 10-13-2017, 01:05 PM   #14 (permalink)
 
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Default Re: I guess I am now a banana surgeon... Any ideas what it is?

.... I dont trust anything regulated by our "Government". But you go ahead and continue to spray that stuff.

I will deal with my Weevil issues the natural way.
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Old 10-13-2017, 07:42 PM   #15 (permalink)
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Default Re: I guess I am now a banana surgeon... Any ideas what it is?

https://www.youtube.com/watch?v=tBrI6zPyH2g
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Old 10-13-2017, 07:45 PM   #16 (permalink)
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Default Re: I guess I am now a banana surgeon... Any ideas what it is?

Not cotton.....

https://www.youtube.com/watch?v=tBrI6zPyH2g
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Old 10-14-2017, 09:10 PM   #17 (permalink)
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Default Re: I guess I am now a banana surgeon... Any ideas what it is?

Wow Steve Iím sorry man! Have you seen any bugs or grubs? I was thinking it could be nematode roundworms. Like Radopholus similis! I donít have experience with either so listen to Gabe! To me the pictures of both look very similar. I know you was talking about small spots almost to the growth point. Where it ends looks like you would have seen a grub. I think they are fairly large. I hear both are throughout the whole state of FL now.

Man thatís scary to someone like me who has so many plants. I say just destroy all those infested corms man. Iíll replace them all for free! Your a great man and friend. Itís the least I can offer. I would also consider any neighbors who have mats close to you!! Could be the source of the bugs. I know they come out at night. What do you think Mike? Good fishing bait? LMAO. What do you think Mike? Might catch one of these!

https://flic.kr/p/Z3PPJq

Good luck man.
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Old 10-14-2017, 10:11 PM   #18 (permalink)
 
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Default Re: I guess I am now a banana surgeon... Any ideas what it is?

That is what is odd, I found no worms at all... if nothing else, they should have been in the bleach dip I kept dipping it in while doing surgery... Maybe I caught them between cycles of eggs and larvae or something. I will look into your suggested insect as well...
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https://sputinc7.wixsite.com/covwc

Varieties I supposedly bought: Manzano, Cavendish, Blue Java, Sweetheart, and Gros Michel.
What it seems I actually have: Brazilian, Cavendish, Namwah, Dwarf Red, Gros Michel, Pisang Ceylon, Veinte Cohol and SH 3640, and American Goldfinger. FHIA 1, Paggi and FHIA 17... Always room for one more.
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