neverforget4/20
Member
Dont those prunings add quite a bit of K? Under that impression I stopped using those bits as (indoor) compost.
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Slownickel lounge, pull up a chair. CEC interpretation
- Thread starter slownickel
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Dont those prunings add quite a bit of K? Under that impression I stopped using those bits as (indoor) compost.
plantingplants
Active member
Could try top soil mix instead of more light soil if space is problematic. More cec by volume right?
No matter what the plants are gonna pull nutes from the soil. Things like N and K that are available are gonna take the largest hit. Ca and P that are less soluble aren't gonna get it as bad. That's a major part of why everyone is gypsum this, gypsum that, in this thread.
Tom hill once said a monochromatic soil was prefered. I'm more into treating all exactly the same and trying to keep things consistent, so I have to remember less. Layers, spikes and zones don't happen with me
Tom hill once said a monochromatic soil was prefered. I'm more into treating all exactly the same and trying to keep things consistent, so I have to remember less. Layers, spikes and zones don't happen with me
slow, they tell me it was measured by meter.
What does the difference suggest to you one way or the other?
caterpillar710
Member
I just don't know how someone is doing spikes and layers on hundreds of acres but I guess when you're paying Peruvian labor rates...
I posed the question to the lab chemist. Let's see how he responds tomorrow.
Been super busy with heavy flooding....
HillMizer
Member
Ah yes Peru too is getting hammered with rain. Good Luck Slownickel!
We have had so much rain. I have 8" of snow on top of my mud right now. All that soil work is going to wait a while. No tractors will be tractoring.
I think next time I send an analysis I'll shell out for K2, K3 and send one to Logan and we'll take a look.
Spectrum seems busy, can't talk Bill or anyone lately. They only sent me paper results this time, I'll email them.
Newest one in PPM, using K3 specifications, calibrated for weight
6.6 PH, 8.6%OM, 6683 P (m3), 1556 K (m3), 1044 Mg (m3), 20693 Ca(m3)
CEC 33, 4398 S, 5.5 B, 35.1 Zn, 132 Fe, 15.2 Cu, 109 Mn, 53 Al
10800 Ca (NH4Ac 8.2) Na 150(m3) NO3-N 19
The Photo is the previous sample from 40 days prior but using K2 Specifications
Thanks for everyone's work and insight. No expectations for any input, I'm just experimenting and learning what I can.
I came up with 72% calcium base saturation based using 54 Meq/100 gram Calcium from the AA and my calculated 75 CEC based on the adding all cations present on the analysis.
72% Ca 5% K 11% Mg. 4:1 P:K.
Gotta say, they don't look amazing. I have some patches of necrosis on the edge of the leaves on top of plants and slight tip burn. One pheno of Sky Lotus has light speckling. I'm thinking I see Zn def and calcium def. I'm using a mixture of low PPM sierra lake (res) water and rainwater at 6.2 PH.
One bed is being harvested this week the other appears to have another week+.
Between first ,and second analysis I've added Cu Sulfate, Borax, prunings, and quite a bit of gypsum.
You should be using way more calcium silicate than gypsum at that pH of your source water. You are mostly wasting that gypsum at that pH, unless you are looking to displace other excess cations. I'm using about twice the amount of calcium silicate as I am gypsum, and I have to say my ladies are shinning! (I put down lots of Zn and Mn too!)
Thanks. Sent samples yesterday...I'll share results when I get them.
Keep that powder dry!
HillMizer
Member
Totally right, had not thought of it. I was really stoked on the idea of leaving that stuff in there, oh well.
Agreed
Yep, I need to pay attention to it, they seemed to tolerate it in veg and stretch (they looked great) but in late flower they got cranky. I'm at 1.68 ec in soil now
Cool. I'm keen to try the calcium silicate. D.E. is my silicate source, since K Sil is usually out for me.
Thanks yall!
plantingplants
Active member
led05
Chasing The Present
when I looked a little further at those WATER results I thought the EC was calculated with a plug, like a math plug...
If they actually did "measure" it as they say (all these labs have a number of limitations, inherent, as I've mentioned numerous times) it's quite surprising, it would mean your water literally ONLY had in it what the analysis listed out, which is quite unusual, almost unbelievably so.
Water has a ton of things in it, especially in trace amounts that would effect that EC number.
I believe it's why Slow initially said it looked almost too good - aka unbelievable.
If you can, take a look at the county, town etc water analysis on your source water, my bet is there's a lot more in there in smaller amounts (the county / town etc has to list shit out like Chromium, Arsenic etc etc) than that particular analysis is "calculating" and or "measuring" as they claimed to do...
Slow, you know the chemists at all of these labs, didn't he use a diff one than Spectrum?
I'm not sure a convo with a chemist is necessary though, unless it's the one at that particular lab and questioning their methods, the above explains it.... And I'm certainly no chemist
https://environmentalchemistry.com/yogi/periodic/electrical.html - The EC of many elements, maybe all of them.....
Better to understand than to rely....
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FGL testing methods listed here
SM2510B detailed
The hydrolysis reaction, that makes silica(SiO2)into silicic acid(plant available silicon[H4SiO4]) removes H+ ions from the soil solution, thus raising pH. This is true no matter the source material, the only difference is the rate/speed that this reaction takes place.
SM2510B detailed
The hydrolysis reaction, that makes silica(SiO2)into silicic acid(plant available silicon[H4SiO4]) removes H+ ions from the soil solution, thus raising pH. This is true no matter the source material, the only difference is the rate/speed that this reaction takes place.
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Thanks for the thoughts led, that helps.
Avenger showed that their own site has a sheet that says they measure it, but who knows...
Too far in the country for government water analysis here, I think.
I'm just happy to see there are no major issues with the water. We have a high clay fraction and a healthy CEC, I suspect, so I don't feel too concerned about everything washing away.
Kinda excited to see the soil tests...
Heil Tweetler
Member
Are you thinking it's important to try and change the Fe::Mn ratio?
Heil Tweetler
Member
odd that you found my query cryptic. I was [FONT=Arial, Helvetica, sans-serif]referring[/FONT] to the values shown in the previous post
[FONT=Arial, Helvetica, sans-serif]Iron 248.2 m3-ppm
Manganese 79 m3-ppm [/FONT]
[FONT=Arial, Helvetica, sans-serif]Iron 248.2 m3-ppm
Manganese 79 m3-ppm [/FONT]
[FONT=Arial, Helvetica, sans-serif]Iron 248.2 m3-ppm
Manganese 79 m3-ppm [/FONT]
So I got the first two soil analyses back from Spectrum yesterday.
Here's the results for the amended beds:
And here is the native soil they're built on:
My first impression is that I need to be careful about adding lime, especially with Mg in it, and that I probably want to keep adding gypsum to knock off more K.
As this is my first go-round with testing, though, I could really use some input from those of you who've done it a time or two.
EDIT: The amended beds have received mostly a dairy-manure-based certified organic compost (also contains rice hulls), crushed cinders, oyster shell, gypsum, and a little bone meal. They have also been mulched with straw and cover cropped with clover and ryegrass.
Here's the results for the amended beds:
And here is the native soil they're built on:
My first impression is that I need to be careful about adding lime, especially with Mg in it, and that I probably want to keep adding gypsum to knock off more K.
As this is my first go-round with testing, though, I could really use some input from those of you who've done it a time or two.
EDIT: The amended beds have received mostly a dairy-manure-based certified organic compost (also contains rice hulls), crushed cinders, oyster shell, gypsum, and a little bone meal. They have also been mulched with straw and cover cropped with clover and ryegrass.
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