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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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09-12-2018, 07:00 PM | #1 (permalink) |
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Sun Burn, or Over-fertilized?
Hey all,
I moved my "mystery red" from a spot that had 50% shade, to a spot that has 75% or more sunlight. This was done on 9/9. I also fed all of my bananas a 10-11-11 mix of two of Alaska products fish fertilizers, 1/2 gallon fed this banana in a 21 gallon pot (.org recommended typical soil mix and drainage for all of my plants). The other 1/2 gallon fed 3 of my 5 gallon bananas. I've cut this back to once a month. This was done yesterday. I now have these brown spots on my mystery red. The other bananas do not have the brown spots. The spots look dry, as if the section just dried out. My guess is stress from being moved into more sunlight. The images are two different leaves. 2nd and 3rd newest. https://imgur.com/1wlUqk8 https://imgur.com/67OBp4E Thanks for any help. |
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09-12-2018, 07:23 PM | #2 (permalink) | |
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Re: Sun Burn, or Over-fertilized?
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What quantity of each did you put in the one-gallon container?
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09-12-2018, 07:59 PM | #3 (permalink) |
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Re: Sun Burn, or Over-fertilized?
Alaska Fish Fertilizer is 5-1-1 per tablespoon. Alaska Morbloom is 0-10-10 per table spoon. That is for a 1 gal mix. It was mixed in with the water, and the total came just above the gallon mark on my jug.
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09-12-2018, 10:30 PM | #4 (permalink) | |
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Re: Sun Burn, or Over-fertilized?
Quote:
At once per month feeding, I don't believe this will burn your plants in the short term. However, this is not a good approach to feeding your bananas. I would keep the 5-1-1 and save the other for ornamental flowers (or once two months after planting potatoes, if you happen to grow them). The basic problem is there is too much phosphate for bananas. Instead complement your 1 tbsp 5-1-1 fish with 1/2 teaspoon Sul-Po-Mag. Shake the gallon thoroughly and let sit for an hour before applying. Alternately, you could buy Fruit Fuel from "crazy banana" on this site as a one-bag solution.
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09-13-2018, 03:59 AM | #5 (permalink) |
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Re: Sun Burn, or Over-fertilized?
That's not sunburn. ... It is bugs, likely white flies. Use a general insecticide for garden vegetables.
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09-13-2018, 06:01 AM | #6 (permalink) |
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Re: Sun Burn, or Over-fertilized?
That is my guess too.
A lot happens when a plant is moved/repotted/disturbed. Much depends on how much you have disturbed the roots. Sometimes it is right away or within a few weeks of repotting and usually the older leaves on a plant are the first to tell you so. For me, if I repot I will still keep the plant out of full sunlight for a few weeks till the plant recovers/settles into the new container. Then I can move it where I wish and feed it what I want, usually unruly little children. Some great suggestions on fertilizer ideas were offered up. Last edited by cincinnana : 09-13-2018 at 01:04 PM. |
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09-13-2018, 08:23 AM | #7 (permalink) |
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Re: Sun Burn, or Over-fertilized?
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09-13-2018, 08:26 AM | #8 (permalink) | |
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Re: Sun Burn, or Over-fertilized?
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OK. I did have the plant in the shady spot since it was put into the large container. It won't be re-potted again, so I'll just keep an eye on it. |
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09-13-2018, 09:21 AM | #9 (permalink) | |
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Re: Sun Burn, or Over-fertilized?
Quote:
Neem oil does not kill on contact. The insect has to eat the plant to consume the the neem oil. That is where the insect has eaten sap & soft green part from the leaf leaving the tougher fibers. Sunburn & stress does not do this. Last edited by edwmax : 09-13-2018 at 01:51 PM. |
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09-13-2018, 12:16 PM | #10 (permalink) |
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Re: Sun Burn, or Over-fertilized?
Ok. I’ll look around on the plant to see if there is anything on it. I do know that I have spiders keeping watch on the underside of the leaves.
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09-13-2018, 12:51 PM | #11 (permalink) |
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Re: Sun Burn, or Over-fertilized?
Here's a great product for controlling insects and bugs on fruits and vegetables.
https://www.ortho.com/en-us/products...ay-concentrate
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09-13-2018, 02:05 PM | #12 (permalink) |
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Re: Sun Burn, or Over-fertilized?
These are very small bugs so you may not notice them. I have the same problem on several plants cause by white flies and a small black worms (3/8" long) on the backside of the leaves. ... These wont hurt the banana plant, but will make the leaves ugly. As soon as the night temps start dropping, these pest will be gone.
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09-22-2018, 09:51 AM | #13 (permalink) | |
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Re: Sun Burn, or Over-fertilized?
Quote:
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09-22-2018, 10:03 AM | #14 (permalink) |
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Re: Sun Burn, or Over-fertilized?
I am also having soil acidity issues. Numerous bananas in my collection have started developing chlorotic leaves. This is more likely due to the fertilization that I listed in my first comment. I believe that the excess in phosphorous raised the ph, blocking the iron and manganese absorption (I have symptoms of both). I have added soil acidifier to the pots, and have noticed some improvements in chloroplast production in the youngest leaves. I just wanted to update this since I spoke about fertilization in my first comment.
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09-24-2018, 07:01 AM | #15 (permalink) |
Location: Jacksonville, FL
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Re: Sun Burn, or Over-fertilized?
I sprayed Ortho on the leaves over the weekend. I came out to check the plant this morning. I took pictures of the under side of the leaves. There are chlorotic patches all over the underside of all of the leaves. Is this the first sign of sap suckers eating banana plants?
https://imgur.com/mIhIxsK https://imgur.com/xxmlFC4 https://imgur.com/p0oGMVl https://imgur.com/JZbGU0m |
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09-24-2018, 08:51 AM | #16 (permalink) |
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Re: Sun Burn, or Over-fertilized?
Yep .... When you shake the leaves do you see like dust come off the leaf? ... If so, Those are white flies. ... I was cutting some leaves off this morning and had one with a lot of dust. I'll have to spray again.
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09-24-2018, 09:48 AM | #17 (permalink) | |
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Re: Sun Burn, or Over-fertilized?
Quote:
I hate whiteflies, havnt had a problem with them on my bananas but they do seem to attack my Angel Trumpets. I have also had a time with mealybugs on my papayas. Over the years what I find is the most effective is dawn dish soap and water is a spray bottle kills those little suckers! Not invasive and doesnt hurt plants Happy plants
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09-24-2018, 10:17 AM | #18 (permalink) | |
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Re: Sun Burn, or Over-fertilized?
Quote:
I did notice little, gray, fuzzy clumps in different spots on them. We did have a whitefly and fungus gnat problem until I sprayed the lawn last month. It turns out that some of them were hiding in my bananas. And I assume the yellowing splotches exist due to the chlorophyl being sucked out of the leaf? |
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