Anyone know what this is on my basjoos?

AmberNichole · 10-03-2010, 02:33 PM

Older leaves get this and usually only the 2-3 newest leaves don't have it. I'm thinking a fungus of some sorts. And thoughts? It's only on my 2 basjoos and it don't really seem to hurt them other than they don't look all full because i usually cut off the leaves that start getting that.It's defiantly not the "turning yellow and brown like a normal older banana leaf.

Dalmatiansoap · 10-03-2010, 03:19 PM

SPIDERMITES!!

AmberNichole · 10-03-2010, 03:26 PM

you sure, i didn't see any bugs, but maybe i should check better!

Bob · 10-03-2010, 03:29 PM

You wouldn't really see them just some dust on the leaves and some very fine webbing near the petiole. A lot of times they're underneath the leaves. Since its outside they can be controlled pretty well by just spraying off vigorously with a hose and pay attention to the undersides. If that fails , insecticidal soap works .

chasbear · 10-03-2010, 05:49 PM

Spider mites we don't get here, and this is the home of many insects! In fact our bananas rarely get insect infestations and we don't have to do much in combating them. Fungus, however, is a weekly ritual of battle in our area; Sigatoka to be precise. I don't know if yours is also this type of fungus, but fungus is my 1st suspect in your case. You describe exactly the way that our plants become infected, i.e. the youngest, most delicate 3-4 leaves (wouldn't insects think these are the most tasty and tender?) are exposed to the air-borne spores of the fungus. Later as the leaves mature and harden off (insect comment: eww!) the fungus begins to grow and become visible as in your case, along the outer edges.

A sulfur-based spray (Dithane?) is the most common and inexpensive type we use, and only spraying it on those 3-4 youngest leaves, as the mature ones won't be cured. We do have a rigorous rotation of 4 types of fungicides, but for a home gardener not really that necessary.

CookieCows · 10-03-2010, 05:53 PM

I don't know... if they were kept outside in Florida wouldn't the humidity be high enough to keep spider mites away? Whatever it is.. looks like a frutstrating problem!

LilRaverBoi · 10-03-2010, 09:43 PM

Doesn't look like spider mites at all to me. I would put my money on some sort of fungal infection.

Patty in Wisc · 10-03-2010, 11:34 PM

I think its a fungal thing too. Doesn't look like mite damage. Do you see any webbing at the base od leaf? I dunno, maybe I just caught my mites before they did damage. Maybe spray with copper fungicidal spray?

sandy0225 · 10-11-2010, 07:20 AM

It just looks unhappy to me. Doesn't look like fungus or bugs, looks like environmental stress. Has it been stressed for water or overfertilized during dry weather? The leaf is nice and green, I definitely wouldn't trim it off. If the black edges bother you, then just trim them off with scissors.

jack hagenaars · 10-11-2010, 03:27 PM

fertilizer burn of sorts??

drew leonard · 10-11-2010, 03:51 PM

I believe Sandy is right with this one! Fertilizer burn with a lack of watering in of the fertilizer.

Quite possibly the soil was not wet enough at pre-fertilizer application?

Let us know how it turns out in the coming months!

Happy Gardening!
Drew

AmberNichole · 10-11-2010, 04:12 PM

I am really leaning toward fungus, I cut all the bad leaves and have been spraying just the new leaves with water daily (thinking maybe i can get rid of the spores)and it seems to be working, not to mention it has been cooling off here quite a bit so maybe that has something to do with it as well. Not sure but whatever ever it is it's working.

DoctorSteve · 10-11-2010, 07:45 PM

Check out page 23 and 24 on the link below.

http://www.ctahr.hawaii.edu/nelsons/...management.pdf

It looks like it could be an Iron toxicity problem (page 24), possibly manganese toxicty (page 23 bottom of picture 7). I am thinking iron though. That is just what it looks like.

Also this one may be of help with your problem as well.

http://www.agroforestry.net/tti/Musa...a-plantain.pdf

Good luck

drew leonard · 10-12-2010, 07:24 AM

Hey Doc; It looks like you hit the nail on the head!

That is a killer link! Will have to stuff that in the favorites section.

Thanks for the info.

Happy Gardening!

Drew

Caloosamusa · 10-12-2010, 07:46 AM

Manganese Iron toxicity, just my 2 cents. Great website Dr. Steve!!

AmberNichole · 10-12-2010, 08:20 PM

Thats a great website, thanks a lot. Seems like it is Marginal necrosis from soil. not to sure what that means though. One banana is in the ground and one is potted and the 13-14ish other bananas I have don't suffer from this, just the Basjoos. I do buy a bulk potting mix from a landscape wholesaler and use the avocado and citrus fertilizer.

DoctorSteve · 10-28-2010, 11:11 PM

How are your bananas looking, are they any better?

garden gal · 11-09-2010, 10:33 AM

Thanks so much Doctor Steve for the site! My Abynessian has been a problem and I now see it is potassium deficiency....

drew leonard · 11-09-2010, 03:24 PM

Garden Gal,

Do you have a picture to post that we might all see?

Thanks,

Happy Gardening!

garden gal · 11-09-2010, 09:59 PM

I got a picture to Photo Gallery but that's all! I'm new at this...

10-03-2010, 02:33 PM	#1 (permalink)
AmberNichole AmberNichole's Photo Gallery Location: Cape Coral, Florida Find me on the map! Zone: 9b Name: Amber Join Date: May 2010 Posts: 523 BananaBucks : 31,233 Feedback: 0 / 0% Said "Thanks" 227 Times Was Thanked 569 Times in 148 Posts Said "Welcome to Bananas" 7 Times	Anyone know what this is on my basjoos? Older leaves get this and usually only the 2-3 newest leaves don't have it. I'm thinking a fungus of some sorts. And thoughts? It's only on my 2 basjoos and it don't really seem to hurt them other than they don't look all full because i usually cut off the leaves that start getting that.It's defiantly not the "turning yellow and brown like a normal older banana leaf. __________________

10-03-2010, 03:19 PM	#2 (permalink)
Dalmatiansoap Let there be light Dalmatiansoap's Photo Gallery Location: Makarska, Croatia Find me on the map! Zone: 9 Name: Ante Join Date: Dec 2008 Posts: 8,520 BananaBucks : 227,862 Feedback: 10 / 100% Said "Thanks" 5,487 Times Was Thanked 7,226 Times in 2,627 Posts Said "Welcome to Bananas" 620 Times	Re: Anyone know what this is on my basjoos? SPIDERMITES!! __________________ http://maslinovoulje.org/

10-03-2010, 03:26 PM	#3 (permalink)
AmberNichole AmberNichole's Photo Gallery Location: Cape Coral, Florida Find me on the map! Zone: 9b Name: Amber Join Date: May 2010 Posts: 523 BananaBucks : 31,233 Feedback: 0 / 0% Said "Thanks" 227 Times Was Thanked 569 Times in 148 Posts Said "Welcome to Bananas" 7 Times	Re: Anyone know what this is on my basjoos? you sure, i didn't see any bugs, but maybe i should check better! __________________

10-03-2010, 03:29 PM	#4 (permalink)
Bob Orang Puteh Bob's Photo Gallery Location: Morris plains N.J. Find me on the map! Zone: 6a Name: bob Join Date: Sep 2008 Posts: 3,507 BananaBucks : 101,034 Feedback: 12 / 100% Said "Thanks" 9,472 Times Was Thanked 3,954 Times in 1,662 Posts Said "Welcome to Bananas" 562 Times	Re: Anyone know what this is on my basjoos? You wouldn't really see them just some dust on the leaves and some very fine webbing near the petiole. A lot of times they're underneath the leaves. Since its outside they can be controlled pretty well by just spraying off vigorously with a hose and pay attention to the undersides. If that fails , insecticidal soap works . __________________

10-03-2010, 05:49 PM	#5 (permalink)
chasbear Banana Explorer chasbear's Photo Gallery Location: Bukidnon Province, Philippines Find me on the map! Zone: Equatorial Name: Charles Join Date: Oct 2008 Posts: 189 BananaBucks : 5,972 Feedback: 0 / 0% Said "Thanks" 153 Times Was Thanked 197 Times in 63 Posts Said "Welcome to Bananas" 26 Times	Re: Anyone know what this is on my basjoos? Spider mites we don't get here, and this is the home of many insects! In fact our bananas rarely get insect infestations and we don't have to do much in combating them. Fungus, however, is a weekly ritual of battle in our area; Sigatoka to be precise. I don't know if yours is also this type of fungus, but fungus is my 1st suspect in your case. You describe exactly the way that our plants become infected, i.e. the youngest, most delicate 3-4 leaves (wouldn't insects think these are the most tasty and tender?) are exposed to the air-borne spores of the fungus. Later as the leaves mature and harden off (insect comment: eww!) the fungus begins to grow and become visible as in your case, along the outer edges. A sulfur-based spray (Dithane?) is the most common and inexpensive type we use, and only spraying it on those 3-4 youngest leaves, as the mature ones won't be cured. We do have a rigorous rotation of 4 types of fungicides, but for a home gardener not really that necessary. __________________ Read more about my SOUTH EAST ASIA ADVENTURES Current Conditions at our Provincial Capital:

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10-03-2010, 05:53 PM	#6 (permalink)
CookieCows Member CookieCows's Photo Gallery Location: Kentucky Find me on the map! Zone: 6-7 Name: Deb Join Date: Dec 2007 Posts: 1,182 BananaBucks : 30,548 Feedback: 3 / 100% Said "Thanks" 1,345 Times Was Thanked 682 Times in 389 Posts Said "Welcome to Bananas" 159 Times	Re: Anyone know what this is on my basjoos? I don't know... if they were kept outside in Florida wouldn't the humidity be high enough to keep spider mites away? Whatever it is.. looks like a frutstrating problem! __________________

10-03-2010, 09:43 PM	#7 (permalink)
LilRaverBoi Nanner Time! LilRaverBoi's Photo Gallery Location: Cedar Rapids, IA Find me on the map! Zone: 5 Name: Bryan Join Date: Mar 2009 Posts: 2,798 BananaBucks : 9,830 Feedback: 0 / 0% Said "Thanks" 528 Times Was Thanked 2,008 Times in 1,146 Posts Said "Welcome to Bananas" 698 Times	Re: Anyone know what this is on my basjoos? Doesn't look like spider mites at all to me. I would put my money on some sort of fungal infection. __________________ BANANA RAVE! Feel the beat from start to stop, dancin' and movin' from bottom to top! lilraverboi@genxglow.com RIP Tog Tan. We love you and will always remember you! I'm Bryan with a Y! There is no 'I' in BRYAN!

10-03-2010, 11:34 PM	#8 (permalink)
Patty in Wisc tropical nut Patty in Wisc's Photo Gallery Zone: 5 Join Date: Sep 2006 Posts: 3,115 BananaBucks : 125,379 Feedback: 1 / 100% Said "Thanks" 2,946 Times Was Thanked 2,457 Times in 1,183 Posts Said "Welcome to Bananas" 69 Times	Re: Anyone know what this is on my basjoos? I think its a fungal thing too. Doesn't look like mite damage. Do you see any webbing at the base od leaf? I dunno, maybe I just caught my mites before they did damage. Maybe spray with copper fungicidal spray? __________________ Got a lite? Patty ____ Patty in Wisc has sadly passed away 9/05/11. We will miss you Patty.

10-11-2010, 07:20 AM	#9 (permalink)
sandy0225 Northern Tropics sandy0225's Photo Gallery Location: Muncie, Indiana zone 5 Find me on the map! Zone: zone 5 Name: Sandy Join Date: Nov 2005 Posts: 1,650 BananaBucks : 108,666 Feedback: 30 / 97% Said "Thanks" 32 Times Was Thanked 1,490 Times in 618 Posts Said "Welcome to Bananas" 8 Times	Re: Anyone know what this is on my basjoos? It just looks unhappy to me. Doesn't look like fungus or bugs, looks like environmental stress. Has it been stressed for water or overfertilized during dry weather? The leaf is nice and green, I definitely wouldn't trim it off. If the black edges bother you, then just trim them off with scissors. __________________ Sandy Burrell Northern Tropics Greenhouse 1501 East Fuson Road Muncie, IN 47302 www.northerntropics.com specializing in bananas, heirloom tomatoes and water gardening plants~ check out our new online store at our website!

10-11-2010, 03:27 PM	#10 (permalink)
jack hagenaars jack hagenaars's Photo Gallery Location: Victoria,British Columbia Find me on the map! Zone: 8 a/b Name: Jack Join Date: Aug 2008 Posts: 234 BananaBucks : 21,818 Feedback: 0 / 0% Said "Thanks" 3 Times Was Thanked 131 Times in 79 Posts Said "Welcome to Bananas" 7 Times	Re: Anyone know what this is on my basjoos? fertilizer burn of sorts??

10-11-2010, 03:51 PM	#11 (permalink)
drew leonard drew leonard drew leonard's Photo Gallery Find me on the map! Zone: 7b-8 Name: Drex Join Date: Jul 2010 Posts: 359 BananaBucks : 4,162 Feedback: 0 / 0% Said "Thanks" 312 Times Was Thanked 227 Times in 137 Posts Said "Welcome to Bananas" 0 Times	Re: Anyone know what this is on my basjoos? I believe Sandy is right with this one! Fertilizer burn with a lack of watering in of the fertilizer. Quite possibly the soil was not wet enough at pre-fertilizer application? Let us know how it turns out in the coming months! Happy Gardening! Drew

10-11-2010, 04:12 PM	#12 (permalink)
AmberNichole AmberNichole's Photo Gallery Location: Cape Coral, Florida Find me on the map! Zone: 9b Name: Amber Join Date: May 2010 Posts: 523 BananaBucks : 31,233 Feedback: 0 / 0% Said "Thanks" 227 Times Was Thanked 569 Times in 148 Posts Said "Welcome to Bananas" 7 Times	Re: Anyone know what this is on my basjoos? I am really leaning toward fungus, I cut all the bad leaves and have been spraying just the new leaves with water daily (thinking maybe i can get rid of the spores)and it seems to be working, not to mention it has been cooling off here quite a bit so maybe that has something to do with it as well. Not sure but whatever ever it is it's working. __________________

10-11-2010, 07:45 PM	#13 (permalink)
DoctorSteve DoctorSteve's Photo Gallery Find me on the map! Zone: 9b Join Date: Mar 2010 Posts: 382 BananaBucks : 55,082 Feedback: 0 / 0% Said "Thanks" 81 Times Was Thanked 295 Times in 151 Posts Said "Welcome to Bananas" 41 Times	Re: Anyone know what this is on my basjoos? Check out page 23 and 24 on the link below. http://www.ctahr.hawaii.edu/nelsons/...management.pdf It looks like it could be an Iron toxicity problem (page 24), possibly manganese toxicty (page 23 bottom of picture 7). I am thinking iron though. That is just what it looks like. Also this one may be of help with your problem as well. http://www.agroforestry.net/tti/Musa...a-plantain.pdf Good luck

10-12-2010, 07:24 AM	#14 (permalink)
drew leonard drew leonard drew leonard's Photo Gallery Find me on the map! Zone: 7b-8 Name: Drex Join Date: Jul 2010 Posts: 359 BananaBucks : 4,162 Feedback: 0 / 0% Said "Thanks" 312 Times Was Thanked 227 Times in 137 Posts Said "Welcome to Bananas" 0 Times	Re: Anyone know what this is on my basjoos? Hey Doc; It looks like you hit the nail on the head! That is a killer link! Will have to stuff that in the favorites section. Thanks for the info. Happy Gardening! Drew

10-12-2010, 07:46 AM	#15 (permalink)
Caloosamusa Caloosamusa's Photo Gallery Find me on the map! Join Date: Mar 2008 Posts: 3,578 BananaBucks : 19,320 Feedback: 1 / 67% Said "Thanks" 3,829 Times Was Thanked 1,473 Times in 667 Posts Said "Welcome to Bananas" 334 Times	Re: Anyone know what this is on my basjoos? Manganese Iron toxicity, just my 2 cents. Great website Dr. Steve!!

10-12-2010, 08:20 PM	#16 (permalink)
AmberNichole AmberNichole's Photo Gallery Location: Cape Coral, Florida Find me on the map! Zone: 9b Name: Amber Join Date: May 2010 Posts: 523 BananaBucks : 31,233 Feedback: 0 / 0% Said "Thanks" 227 Times Was Thanked 569 Times in 148 Posts Said "Welcome to Bananas" 7 Times	Re: Anyone know what this is on my basjoos? Thats a great website, thanks a lot. Seems like it is Marginal necrosis from soil. not to sure what that means though. One banana is in the ground and one is potted and the 13-14ish other bananas I have don't suffer from this, just the Basjoos. I do buy a bulk potting mix from a landscape wholesaler and use the avocado and citrus fertilizer. __________________

10-28-2010, 11:11 PM	#17 (permalink)
DoctorSteve DoctorSteve's Photo Gallery Find me on the map! Zone: 9b Join Date: Mar 2010 Posts: 382 BananaBucks : 55,082 Feedback: 0 / 0% Said "Thanks" 81 Times Was Thanked 295 Times in 151 Posts Said "Welcome to Bananas" 41 Times	Re: Anyone know what this is on my basjoos? How are your bananas looking, are they any better?

11-09-2010, 10:33 AM	#18 (permalink)
garden gal garden gal's Photo Gallery Zone: 7 Join Date: Sep 2009 Posts: 8 BananaBucks : 1,015 Feedback: 0 / 0% Said "Thanks" 4 Times Was Thanked 7 Times in 4 Posts Said "Welcome to Bananas" 3 Times	Re: Anyone know what this is on my basjoos? Thanks so much Doctor Steve for the site! My Abynessian has been a problem and I now see it is potassium deficiency....

11-09-2010, 03:24 PM	#19 (permalink)
drew leonard drew leonard drew leonard's Photo Gallery Find me on the map! Zone: 7b-8 Name: Drex Join Date: Jul 2010 Posts: 359 BananaBucks : 4,162 Feedback: 0 / 0% Said "Thanks" 312 Times Was Thanked 227 Times in 137 Posts Said "Welcome to Bananas" 0 Times	Re: Anyone know what this is on my basjoos? Garden Gal, Do you have a picture to post that we might all see? Thanks, Happy Gardening!

11-09-2010, 09:59 PM	#20 (permalink)
garden gal garden gal's Photo Gallery Zone: 7 Join Date: Sep 2009 Posts: 8 BananaBucks : 1,015 Feedback: 0 / 0% Said "Thanks" 4 Times Was Thanked 7 Times in 4 Posts Said "Welcome to Bananas" 3 Times	Re: Anyone know what this is on my basjoos? I got a picture to Photo Gallery but that's all! I'm new at this...

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