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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 06-16-2020, 06:16 PM   #1 (permalink)
 
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Default Pale Stunted Leaves on a Raja Puri

I have six banana plants in my back yard. Two of them have recently started putting out pale, stunted, and mis-shapen leaves. The mystery banana's main pseudostem looks good, but the leaves of the pups have been affected. The Raja Puri has been affected in both the pseudostem and the pups. in the Raja Puri's pseudostem, in addition to being pale, stunted and mis-shapen, the leaves are twisted and tangled up in each other. The other 4 bananas are doing just fine. All six bananas receive the same growing conditions. The three pictures below are of the Raja Puri.

All my bananas are on a drip irrigation system. At the beginning of June, I increased the watering frequency from one hour every other day to one hour every day. During the second week of June we had lots of rain all week (the drip system was off that week). The problem started about the same time I increased the watering. This suggests an over-watering problem, but I watered the same two plants daily during June, July, and August last year and didn't have this problem. I have reduced the watering back to every other day.

So what do y'all think? Is this an over-watering problem or something else?

Art R.
Ormond Beach, FL, USA





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Old 06-16-2020, 06:40 PM   #2 (permalink)
 
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Default Re: Pale Stunted Leaves on a Raja Puri

My namwah have the same pale green leaves, and often shredded or mis-shaped upon unfurling. I am pushing mine hard with fertilizer and think that may be it.. many have done it for a few leaves, then resumed normal cigar leaves. After a day or two, the new leaves become dark green like the rest. If you are using a slow release fertilizer, increased watering may be pushing more nutrients to your plants.. I wouldn't worry a bunch about it.. im betting it will sort itself out just as mine have.
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Old 06-16-2020, 08:52 PM   #3 (permalink)
 
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Default Re: Pale Stunted Leaves on a Raja Puri

This is lack of fertilizer ... specifically nitrogen. Apply granular balanced fertilizer for vegetables to the ground and then foliar spray with urea at 2% nitrogen or Miracle Grow (24-8-16) mixed to 2% N (76 g/gal of water) weekly until the leaves are normal again. .... Foliar spraying will show improvement over night.
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Old 06-16-2020, 09:34 PM   #4 (permalink)
 
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Default Re: Pale Stunted Leaves on a Raja Puri

Looks like Boron or Calcium deficiency.

Although present in the soil, the uptake of these minerals may be impaired due to rapid growth caused by excess nitrogen or rainfall/irrigation. High PH can also prevent/impede the uptake of boron and calcium. A few members have reported their well water or city supplied water had a high PH which effected their plants.
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Old 06-18-2020, 08:22 AM   #5 (permalink)
 
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Default Re: Pale Stunted Leaves on a Raja Puri

Deffinately need fertilizer lots of great ideas from earlier posts just remember to water in well whatever you use otherwise you can burn the plant.
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Old 06-22-2020, 09:22 AM   #6 (permalink)
 
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Default Re: Pale Stunted Leaves on a Raja Puri

I want to thank everyone who replied to my post. I fertilize monthly with one pound of a mixture of one part urea (46 0 0) and 3 parts muriate of potash (0 0 60) and I supplement with water soluble Miracle Gro so I don't think that I am under-fertilizing (any comments?) My drip irrigation system is connected to municipal water not well water. Based on everyone's great input, I'm thinking that I pushed the plant too hard and hopefully it will sort itself out if I back off a little and leave it alone. I will also check on the pH of the municipal water. Thanks again to everyone.
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Old 06-22-2020, 03:12 PM   #7 (permalink)
 
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Default Re: Pale Stunted Leaves on a Raja Puri

Quote:
Originally Posted by Art_R View Post
I want to thank everyone who replied to my post. I fertilize monthly with one pound of a mixture of one part urea (46 0 0) and 3 parts muriate of potash (0 0 60) and I supplement with water soluble Miracle Gro so I don't think that I am under-fertilizing (any comments?) My drip irrigation system is connected to municipal water not well water. Based on everyone's great input, I'm thinking that I pushed the plant too hard and hopefully it will sort itself out if I back off a little and leave it alone. I will also check on the pH of the municipal water. Thanks again to everyone.

Now that you have given more info as to what & how you were fertilizing, a better assessment can be given.



1) If you were 'pushing too hard' the banana leaves would be showing some distortion not dis-coloration. However, you could have burned the plant roots using the Urea. Thus, the plant is unable to takeup the needed fertilizer until new roots regrow and thus causing the light colored & yellow leaves. ... Note: If the roots are burned foliar spraying with a light fertilizer mix (with minors) will show improvements and will sustain the plant until the roots can regrow.



2) The combination of fertilizers you gave do not have the needed minor elements ( boron, calcium, magnesium, sulfur, iron, ect). The Miracle Gro might have the minors, depend on which type you buy (general or vegetable). But I doubt you are giving enough of the Miracle Gro to provide the needed minors. ... You should be using fertilizer formulated for 'vegetable garden' use. .... You can buy the vegetable minors as a supplement to mix with general use fertilizers. .... This was why I stated lack of fertilizer. When the plant is missing one element, it is usually missing several other needed minor & major elements.


3)
Quote:
Originally Posted by Art_R View Post
.... I fertilize monthly with one pound of a mixture of one part urea (46 0 0) and 3 parts muriate of potash (0 0 60) and I supplement with water soluble Miracle Gro, ...
While on the surface of your mix this doesn't look like too much ... but the urea is readily water soluble and highly concentrated. It could burn the plant roots it heavily irrigated/watered or during a heavy rain; and then be washed away. A granular slow release fertilizer (vegetable mix) would be better for the growing season.
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