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Old 07-14-2012, 06:09 PM   #1 (permalink)
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Default Fixing micronutrient deficiency

Some of my plants appear to have boron or calcium deficiency. Does anyone know of any fertilizers or products I can use to fix this? Should I use a foliar spray or apply directly to the soil? Any recommendations on dosage? One of the affected plants has 5 and a half feet of p-stem and the other has 4 and a half. Thanks.
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Old 07-14-2012, 06:24 PM   #2 (permalink)
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Default Re: Fixing micronutrient deficiency

It is unlikely that the problem is lack of nutrients in the soil if it is just now showing up. If you can find a product with calcium and boron in a chelated form you could apply it foliarly. Keyplex has a blossom formula that has Ca-Mg-B chelates.
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Old 07-14-2012, 06:39 PM   #3 (permalink)
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Default Re: Fixing micronutrient deficiency

I'll almost guarantee it's too much fert. rather than lack of.
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Old 07-14-2012, 07:25 PM   #4 (permalink)
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Default Re: Fixing micronutrient deficiency

Probably. In my most recent application, I did lessen the dosage for all my plants. I apply 20-5-30 Banana Fuel monthly. Maybe I should lay off it for a while.
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Old 07-14-2012, 07:30 PM   #5 (permalink)
 
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Default Re: Fixing micronutrient deficiency

The question would be then can an increase in calcium and boron help sustain good health with higher levels of fertilizer that would have normally been detrimental?
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Old 07-14-2012, 08:40 PM   #6 (permalink)
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Default Re: Fixing micronutrient deficiency

I think it can. My fertilizer also contains boron in it, so it might be calcium deficiency then.
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Old 07-14-2012, 08:54 PM   #7 (permalink)
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Default Re: Fixing micronutrient deficiency

If I remember right you have clay soil ? Throwing more fertilizer at it won't help.Maybe compost,manures would be a better idea ?
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Old 07-14-2012, 09:50 PM   #8 (permalink)
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Default Re: Fixing micronutrient deficiency

I do have clay soil. I guess I'll really lower my fert dosage and add more organics. But the deficiency is really starting to affect my plants. For the time being, I need to supply them with the required micronutrients.
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Old 07-14-2012, 10:20 PM   #9 (permalink)
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Default Re: Fixing micronutrient deficiency

How hot has it been at your location.
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Old 07-14-2012, 11:31 PM   #10 (permalink)
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Default Re: Fixing micronutrient deficiency

It's been in the 90s lately, and dry.
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Old 07-15-2012, 01:09 AM   #11 (permalink)
 
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Default Re: Fixing micronutrient deficiency

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Originally Posted by caliboy1994 View Post
My fertilizer also contains boron in it, so it might be calcium deficiency then.
This logic is not sound. The NPK gets transported into the newly forming tissues faster than the boron can be. Lay off the fert altogether, get a professional soil test, and spray with a "complete" micronutrient foliar spray.
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Old 07-15-2012, 01:10 AM   #12 (permalink)
 
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Default Re: Fixing micronutrient deficiency

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The question would be then can an increase in calcium and boron help sustain good health with higher levels of fertilizer that would have normally been detrimental?
The short answer is yes.
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Old 07-15-2012, 10:02 AM   #13 (permalink)
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Default Re: Fixing micronutrient deficiency

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Originally Posted by caliboy1994 View Post
It's been in the 90s lately, and dry.
With those conditions certain varieties always show deficiency symptoms. The plant just can't move those nutrients quick enough to keep up with growth.
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Old 07-15-2012, 07:45 PM   #14 (permalink)
 
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Default Re: Fixing micronutrient deficiency

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This logic is not sound. The NPK gets transported into the newly forming tissues faster than the boron can be. Lay off the fert altogether, get a professional soil test, and spray with a "complete" micronutrient foliar spray.
Aye, I would stop changing the environment and get some good data before you make a potentially lethal mistake. I suspect I am not the only person who has killed plants trying to correct a suspected nutrient issue.
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Old 07-15-2012, 08:44 PM   #15 (permalink)
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Default Re: Fixing micronutrient deficiency

Andreas, Mark's idea will achieve what you want, to grow healthy bananas. If you can get the banana fuel feeding regime down and you know your soil via soil testing, that would work fine, but if you go organic you don't really need to do anything other than feed the soil and the plant will take what it needs, no math or soil testing needed.
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Old 07-15-2012, 09:14 PM   #16 (permalink)
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Default Re: Fixing micronutrient deficiency

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Andreas, Mark's idea will achieve what you want, to grow healthy bananas. If you can get the banana fuel feeding regime down and you know your soil via soil testing, that would work fine, but if you go organic you don't really need to do anything other than feed the soil and the plant will take what it needs, no math or soil testing needed.

I'm not sure that going organic would necessarily fix the problem. I've looked into the problem at length and it seems to be an issue all over the subtropics. I see it on my bananas and they are growing in soil that is 30% organic matter. My personal feeling is that the problem will eventually work itself out, but if you are looking to be proactive, foliar feeding is an option. You do have to be careful with boron though.
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Old 07-15-2012, 11:07 PM   #17 (permalink)
 
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Default Re: Fixing micronutrient deficiency

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You do have to be careful with boron though.
That's for sure! From what I understand, the difference between enough and too much is very slight, and boron toxicity is not a good thing!
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Old 07-22-2012, 03:42 PM   #18 (permalink)
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Default Re: Fixing micronutrient deficiency

Quote:
Originally Posted by caliboy1994 View Post
Some of my plants appear to have boron or calcium deficiency. Does anyone know of any fertilizers or products I can use to fix this? Should I use a foliar spray or apply directly to the soil? Any recommendations on dosage? One of the affected plants has 5 and a half feet of p-stem and the other has 4 and a half. Thanks.
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Old 07-22-2012, 04:50 PM   #19 (permalink)
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Default Re: Fixing micronutrient deficiency

Are there any pics of this "deficiency"?
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Old 07-22-2012, 06:04 PM   #20 (permalink)
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Default Re: Fixing micronutrient deficiency

2 quick sources are Vigoro "Citrus and Avocado" fertilizer, of "Citrus Growers Mix".
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