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Author Topic: Should I Apply 0-0-50?  (Read 488 times)

Carbo

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Should I Apply 0-0-50?
« on: September 07, 2019, 09:13:34 PM »
I've read here that applying a 0-0-50 fertilizer around this time of year may increase fruit yield.  I feed my mango trees lightly, twice yearly, with 8-3-9 plus minors.  Should I give the trees a sprinkling of 0-0-50 in the next few weeks?  I'm seeing various products available.  Is sulfate of potash the same as muriate of potash?  And I assume granular would be preferable to powder?

zands

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Re: Should I Apply 0-0-50?
« Reply #1 on: September 08, 2019, 10:50:55 AM »
This month I am going to put down some 0-0-50 granular on some of my mango trees. Muriate is same as Potassium sulfate. The granular potassium sulfate is what you want. Though Har's (Guanabanas) potassium fertilizer sounds like the ultimate because it includes minor elements/trace elements..
Universal Supply in Broward gets the granular from time to time. I got two bags last year by random chance.
Address: 2171 Blount Rd, Pompano Beach, FL 33069
Phone: (954) 979-0600

The potassium sulfate powder is what is put into irrigation systems aka fertigation. It is highly dissolvable. You could use this powder on your trees as a surface fertilizer but would require frequent small doses. 

Aside from Har's formulation the only form of potassium you want is the sulfate, with granular the best and the powder being usable if you are disciplined enough to hit your trees with it, small doses each few weeks. If you have lots of mulch around your trees the K2SO4 powder might chelate into the mulch and change to slow release.
« Last Edit: September 08, 2019, 10:59:44 AM by zands »

Carbo

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Re: Should I Apply 0-0-50?
« Reply #2 on: September 08, 2019, 11:01:27 AM »
Thanks, zands.  You confirmed what I was thinking.

edzone9

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Re: Should I Apply 0-0-50?
« Reply #3 on: September 08, 2019, 11:10:26 AM »
Iím also applying 0-0-50 at the end of September as directed in the RFC fertilization schedule 👍

Get those babies ready for next season 😊
Zone 10

zands

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Re: Should I Apply 0-0-50?
« Reply #4 on: September 08, 2019, 11:13:41 AM »
Thanks, zands.  You confirmed what I was thinking.

Har's potassium granules are coated so very nice slow release. Common 0-0-50 Granular potassium sulfate is kind of slow release. I have seen it persist in my mulch. With potassium sulfate powder bringing up the rear, but still usable for those who are disciplined.

Same as slow release nitrogen fertilizer called 8-3-9 also called Fruitilizer at Universal Supply..... Also other slow release nitrogen formulations found at Lowe's and Home Depot. The nitrogen granules in these fertilizers are polymer (plastic) coated. Har's potassium granules are polymer coated.

cbss_daviefl

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Re: Should I Apply 0-0-50?
« Reply #5 on: September 08, 2019, 12:32:43 PM »
Muriate of Potash  = Potassium Chloride

You want sulfate of potash. K2SO4
Brandon

Carbo

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Re: Should I Apply 0-0-50?
« Reply #6 on: September 08, 2019, 01:23:11 PM »
How much should be applied?  I have a Pickering, about 7' x 7', three years in ground.  And a mature Cogshall about 15' tall and 10' wide.

SeaWalnut

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Re: Should I Apply 0-0-50?
« Reply #7 on: September 08, 2019, 04:41:19 PM »
Why not using ash left from fire ?

zands

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Re: Should I Apply 0-0-50?
« Reply #8 on: September 08, 2019, 06:18:52 PM »
Muriate of Potash  = Potassium Chloride

You want sulfate of potash. K2SO4

You are right! As in Muriatic acid the old name for Hydrochloric acid. Carbo - do not get any muriate of potash or muriate of anything. You only want sulfates. Potassium sulfate/

sunny

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Re: Should I Apply 0-0-50?
« Reply #9 on: September 09, 2019, 05:50:42 PM »
Potassium nitrate is also good.

sosamo

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Re: Should I Apply 0-0-50?
« Reply #10 on: September 09, 2019, 06:35:46 PM »
Where do you get 0-0-50 (So Cal).  I see Amazon has a 5lb bag for like 23.00.  I usually 10-10-10 granular once every quarter.

OCchris1

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Re: Should I Apply 0-0-50?
« Reply #11 on: September 10, 2019, 12:37:30 AM »
Look online at Southern Agriculture 0-0-50 sulfate of potash. I believe I bought 50 lbs. for $25-30 last year or the year before.
-Chris

sosamo

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Re: Should I Apply 0-0-50?
« Reply #12 on: September 10, 2019, 01:55:17 PM »
Look online at Southern Agriculture 0-0-50 sulfate of potash. I believe I bought 50 lbs. for $25-30 last year or the year before.

HHm. Most bags I see are 5lb bags.  I see a 50lb bag for $90+...

JakeFruit

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Re: Should I Apply 0-0-50?
« Reply #13 on: September 10, 2019, 03:07:31 PM »
I just bought a 5lb bag from here for $17.77 with free shipping:
https://seedbarn.com/pages/search-results-page?q=+Sulfate+of+Potash+

sosamo

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Re: Should I Apply 0-0-50?
« Reply #14 on: September 10, 2019, 03:23:56 PM »
Thanks. Now I have to research on how and when to use it :D

OCchris1

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Re: Should I Apply 0-0-50?
« Reply #15 on: September 11, 2019, 01:03:35 AM »
I guess I paid more than I thought I did. Sorry for the bad info
-Chris

 

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