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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 06-07-2013, 12:58 PM   #1 (permalink)
 
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Default Manzano banana fruit not developing properly

I have a couple groupings of Manzano bananas that have produced very good fruit for the past few years (the plants are about 5 years old). Now, I have 4 bunches on the two different groups and all of them are producing fruit that is not developing properly. The growth of the individual bananas is stunted, never exceeding roughly a thumbs width in size. Length appears roughly normal; it's just the diameter of the fruit that's off. In past years I've fertilized them with Miracle Grow on a hose sprayer along with all the other plants I have growing nearby. I've done that a couple times this year also but I'm mainly using an 8-10-8 fertilizer now which I apply about once a month. They also get plenty of water from a drip irrigation system daily. Any thoughts on what might be causing this?
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Old 06-07-2013, 03:51 PM   #2 (permalink)
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Default Re: Manzano banana fruit not developing properly

Quote:
Originally Posted by Scott Craft View Post
I have a couple groupings of Manzano bananas that have produced very good fruit for the past few years (the plants are about 5 years old). Now, I have 4 bunches on the two different groups and all of them are producing fruit that is not developing properly. The growth of the individual bananas is stunted, never exceeding roughly a thumbs width in size. Length appears roughly normal; it's just the diameter of the fruit that's off. In past years I've fertilized them with Miracle Grow on a hose sprayer along with all the other plants I have growing nearby. I've done that a couple times this year also but I'm mainly using an 8-10-8 fertilizer now which I apply about once a month. They also get plenty of water from a drip irrigation system daily. Any thoughts on what might be causing this?
Are you desuckering?
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Old 06-07-2013, 04:21 PM   #3 (permalink)
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Default Re: Manzano banana fruit not developing properly

Maybe they were stressed at one time or another
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Old 06-07-2013, 06:53 PM   #4 (permalink)
 
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Default Re: Manzano banana fruit not developing properly

Am I desuckering?

No, I'm not. While I've had these a few years I really know nothing about growing them other than giving them a fair amount of water and fertilizer. I'll look into that.

As far as stress is concerned, yes, it can get fairly cold (at or below freezing) where I live in southern California and the leaves do take a beating due to the cold but that hasn't seemed to be an issue in past years as the plants always seem to come roaring back once it warms up in the spring.
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Old 06-07-2013, 07:31 PM   #5 (permalink)
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Default Re: Manzano banana fruit not developing properly

First thing that comes to mind is you are running 2 main pstems on each mat and you are using 8-10-8 fert. To thrive, bananas require a fert ratio of med-lo-high. How much, say by the cup, are you putting down?

Sounds like they are being starved of potassium.

Two main psems on a mat means higher demand of K. The monthly part is on the nose.
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Old 06-07-2013, 07:32 PM   #6 (permalink)
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Default Re: Manzano banana fruit not developing properly

When I had my bigger farm, the area where the suckers got ahead of me had junk fruit. A good desuckering could stimulate the plant as well.
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Old 06-07-2013, 07:57 PM   #7 (permalink)
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Default Re: Manzano banana fruit not developing properly

Quote:
Originally Posted by sunfish View Post
Maybe they were stressed at one time.


More info is needed, when did it bloom?, normal # days to fill?, Pseudostem height & C?

I've grown thousands of Manzanos and normally they fill slow in the beginning.
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Old 06-07-2013, 10:06 PM   #8 (permalink)
 
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Default Re: Manzano banana fruit not developing properly

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Originally Posted by bananimal View Post
First thing that comes to mind is you are running 2 main pstems on each mat and you are using 8-10-8 fert. To thrive, bananas require a fert ratio of med-lo-high. How much, say by the cup, are you putting down?

Sounds like they are being starved of potassium.

Two main psems on a mat means higher demand of K. The monthly part is on the nose.
I use the 8-10-8 as I've read on a few sites that that's the ratio commercial growers use, but yeah, I've also read that bananas are heavy K users so 8-10-8 wouldn't be right if that's the case. The brand I'm using is a water soluble that's geared towards roses and that mix is a tablespoon per gallon. I apply two to three gallons for a grouping of 7 plants. I really think your statement regarding suckers is right. That and a better fertilizer.

Also, I'm not familiar with the lingo. What's a mat? What's a pstem?
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Old 06-08-2013, 09:21 AM   #9 (permalink)
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Default Re: Manzano banana fruit not developing properly

Post some pics and state your location. And start looking for Ag suppliers that sell to the public. Ask for granular, not slow release, 6-2-12 with minors or similar.

Fertilizing by the pound not by the table spoon is required.

Mat --- the collective planting of naners with all the suckers originating from the mama corm. Pstem ---- the trunk of each naner. Do searches.
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