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Slownickel lounge, pull up a chair. CEC interpretation

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cbcool

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Call them up and see if they did not miss a decimal place on Ca in the 2nd analysis.

I thought the same thing, but it's legit.

[FONT=Arial, Helvetica, sans-serif]cbcool, with 39 pm nitrate-n, I hope you do not drink this water.[/FONT]

[FONT=Arial, Helvetica, sans-serif]Oh god no, I haul in spring water to drink.[/FONT]
 

slownickel

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Hey Guys,

Any thoughts on this data? This is my recycled peat based container mix. The values are very different from what ive seen from IAL and Logan. In the past I just scooped a sample from midway in the pot (15gal) and dropped it into a sample bag. I was getting organic matter reading around 50%. Mike suggested passing the soil through a sieve to remove hunks of matter. So this sample was uniform particles and the organic % dropped considerably.

[URL=https://www.icmag.com/ic/picture.php?albumid=65374&pictureid=1714278&thumb=1]View Image[/url]

Details.... recycled peat based container mix. Meaning this is what it looked like when he got done.

Tell us how you were fertilizing!

Don't freak about that sodium, it is not that big a deal. You have a great mix to add to!

And what is really peaking my interest, is how did you get that Fe/Mn ratio????

pH 6.4 dang. You had it dialed in. Perfect pH!

Yeah, hate to say it. GYPSUM!!! LMAO!
 

cbcool

Member
RE Water

Who did these tests? How does the PPM in the water = 900 with what they provided as results? Am I seeing these wrong?

If you water is 900PPM, the N is what they are etc, it HAS to be filtered to do anything with, maybe even showering - Jesus do you dry up like a raisin in that stuff?

Spectrum did the tests, ya your right the mass balance doesn't add up.

My friend has grown for five years with this water, food and medicine with good results, I'm not sure what to think.
 

Space Case

Well-known member
Veteran
neverforget....I'd run gypsum and flush with acidified water BEFORE planting to try to flush out that Na and hopefully Al, then add some vansil or lime and do maintenance feeds of K and micros

led05....have any soil tests to show us where you like you base cation sat?

cbcool....looks somewhat similar to my native soil, except you have a crazy amount of Aluminum. Lots of gypsum, e. sulfur, and calphos....your water IS a nutrient solution
 

led05

Chasing The Present
400+ppm? Thats a problem at any pH, IMO...180ppm you can deal with...

200 is my limit personally pretty much same...

I like % 75 Ca, 6-9Mg, K 2-3, trace 3-4%, balance H.... my PH is high here & I don't mind much / tend to like it in soil outdoors for what's native here, to amend to drop PH into 6's isn't worth it, hard floor at 2-3' of limestone, shale mixed in with silty Loam above that, it works for everything I grow in it, it seems, I build up some on top too and mix all these together best I can, aka I fkin till

No tests on me, sorry
 

plantingplants

Active member
Yea it's unavailable at over 6 pH. Even just one ppm of soluble Al fucks your shit up drastically. The m3 Al value is useless and there is a separate test for avail. Al. Pretty sure this info is in one of Spectrum's articles. That's all I know about it.
 

slownickel

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Yea it's unavailable at over 6 pH. Even just one ppm of soluble Al fucks your shit up drastically. The m3 Al value is useless and there is a separate test for avail. Al. Pretty sure this info is in one of Spectrum's articles. That's all I know about it.

In Ohio, the M3 Al test is worthless. (They don't have bicarbonates in their water. Nor high Na.)

All depends where you are standing.

I have plenty of leaf analysis from all kinds of pH soils. Reality varies depending on your dynamics. Don't apply Mn and keep applying Fe and Al and let me know how that works out for you.

Azomite applied to an organic grape farm in CA (alkaline soils) brought avg leaf analysis from 20 to 30 ppms to more than 300 ppms in one season. Not supposed to happen is it....

It has been demonstrated that plants exude more and more acids when they need a specific metal. Often this results in more Al uptake due to the lack of balance between metals due to the huge amount of Fe and Al and dramatic lack of Mn, Cu, Zn and others. Co and Mo also come to mind as "balancers".

No one knows the ability of this particular plant to generate root exudates to pick up nutrients.

If I were to guess, I would bet that it is pretty amazing.
 

slownickel

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Spectrum did the tests, ya your right the mass balance doesn't add up.

My friend has grown for five years with this water, food and medicine with good results, I'm not sure what to think.

Send the lab the question. Might be interesting to find out.
 

slownickel

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I think the sodium is maybe from my worms. Ive cut back back on using vermicompost.

Is gypsum useful in this case or should i take a different approach? Do i need to wetaher this soil or run a fast cover crop to mine some stuff and then retest?

The base distributions if using the [email protected] Ca instead of M3, comes out to:
K% Mg% Ca % Na %
7.4 14.6 72.5 5.5

Given you have water with a pH of 7, your biology is cranking to report back a soil pH of 6.4. And given that you are using all organic inputs it is incredible that you are generating some heavy duty nitrates! Saw this same issue in a sample from Oregon, all done with compost teas.... huge nitrates.

I bet you had a great season if this was the end of it! Got a bit more work to go yet! Pics please!

How much gypsum did you apply by the way?
 

cbcool

Member
cbcool....looks somewhat similar to my native soil, except you have a crazy amount of Aluminum. Lots of gypsum, e. sulfur, and calphos....your water IS a nutrient solution

If it's similar you must live in CO, ya the Al is a bit scary you should have my poo compost results, 5000 ppm Al!!! what the hell were they feeding those horses?

The waters like a natural tea except for the bicarbs.
 
The base distributions if using the [email protected] Ca instead of M3, comes out to:
K% Mg% Ca % Na %
7.4 14.6 72.5 5.5

Given you have water with a pH of 7, your biology is cranking to report back a soil pH of 6.4. And given that you are using all organic inputs it is incredible that you are generating some heavy duty nitrates! Saw this same issue in a sample from Oregon, all done with compost teas.... huge nitrates.

I bet you had a great season if this was the end of it! Got a bit more work to go yet! Pics please!

How much gypsum did you apply by the way?

Yes, this mix grew nice plants. I tested out your gypsum thinking back on 1/12 They were doing pretty well pre gypsum but their was a strong response from the gypsum slurry I applied then. I applied again on 2/1. Plant shown received ~250 gms totla over those 2 applications. The pot is a 10 gal that is about 2/3 -3/4 full. Thick layer of alfalfa straw on top, many worms. This soil has been recycled over and over.

RE: biology. I have a worm bin and I use recharge and MammothP. I dose my pots with these amendments 1x per week. I make a vermicompost tea 1x per month. It's recycled soil so it gets mixed up, then aged outdoors with local deciduous leaves and trimmings etc.


Everyone, thank you for the ideas.

Here's a plant that got yet a third hit of the slurry. I did not observe an effect from this additional application.
just two hits, earlier in flower, is good for now.


 
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plantingplants

Active member
The base distributions if using the [email protected] Ca instead of M3, comes out to:
K% Mg% Ca % Na %
7.4 14.6 72.5 5.5

Slow can you please help me with this math because apparently I'm still doing it wrong and I've been basing my amendments on these fucked up formulas. This is what I got:

meq calculations

Ca (aa8.2) - 7,670 ppm * 2 = 15,340 lb/ac / 400 = 38.35 meq

K - 2118ppm*2=4,236lbac/782 = 5.42 meq

Mg - 1819ppm*2=3,638lbac/240 = 15.16 meq

Na - 975ppm*2=1950lbac/460 = 4.24 meq

H - 8(8-buffer pH) so 8(8-7)= 8 meq

Total meq/100g = 71.17


Base Cation Saturation Percentages


Ca 38.35/71.17 = 53.9%

K 5.42/71.17 = 7.6%

Mg 15.16/71.17 = 21.3%

Na 4.24/71.17 = 6%
 
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