Langbeinite for supersoil

as long as the langbeinite provides readily available mg and s it looks good to me. u could use more castings and oyster if u wanted

bump for cec

just read this whole thing as well. solid info. just mixed up a batch of supersoil a few days ago...wish i wouldve added some langbeinite. I'm going to be mixing the soil again in a few days anyway, so maybe I'll throw some in the mix. Here is my recipe (almost identical to subs):

4 bags Roots 707 mix (12 cu. ft)
5 lbs. Blood meal 12-0-0
3.5 lbs. Bat guano 0-9-0
5 lbs. Fish Bone meal 3-18-0
3/4 cup Epsom salt
1 cup dolomite
1/2 cup azomite
3 Tbs humic acid
1/2 cup Roots Elemental .25-.01-.1 + Ca 20%, Mg 2%, S 1%, Fe .2% (says its derived from calcitic lime, dolomite lime, gypsum, and fish protein hydrolysate

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If you were me, what would you add kushking?

thanks for all the help keep spreading the knowledge

okay picked up a box of langbeinite today (under the name sul-po-mag), as well as some gypsum. should I add these to my SS mix? how much of each? I don't want to overdo the calcium or magnesium, and since I already added epsom salts (mg) and dolomite lime (ca), should i need that much more of either?

kushking if you're out there i'd love to hear what you have to say....

bump for anyone with info on extra amendments to supersoil...

neem seed cake anyone?

diatomaceous earth?

basmati rice? (the rev mentions this in his soil mix)

gypsum?

i know i shouldn't stray from a tried and true recipe...but thats not how my brain works

so whos tried any of these?

I'm adding gypsum to my TGA bagged soil, tends to get that hard top soil... some gypsum will clear it right up.

how much gypsum per gallon or cf or something? just trying to find a ratio. and do you add dolomite lime or anything else (oyster shells, azomite, glacial rock dust, etc)? I just don't want to overdo the sulfur or calcium levels..

thanks for the help

New recipe, what do you think

I am worried I might have a bit too much mg in my mix compared to the calcium...heard the ratio is supposed to be about 5 : 1 Ca:Mg, mine seems to be about 3.5 : 1. going to pick up some crab meal today maybe some oyster shell flour too but then again I don't want to add it if it will make the soil proportionally too much Ca. Is this a concern with my recipe??? Some other recipes I have read seem to call for much more dolomite for example, but then again I have other supplements with high Ca to compensate for that...okay enough concerned babbling here is the recipe:


10 bags Roots soil (15 cu. ft)

40lbs EWC (roughly 1 cu. ft)

5lbs blood meal 12-0-0
3.5lbs guano 0-9-0
5lbs fish bone meal 3-18-0
1.5lbs alfalfa meal 2-1-2
2.5lbs kelp meal 0-001.5
4 cups neem seed meal 4-.5-.5
3/4 cup langbeinite 0-0-22 (also has epsomite - MgSO4·7H2O which provides 22% S and 10% Mg)
4 cups glacial rock dust 0-0-0 but contains 1.4% Ca, .5% Mg, 4% Fe, .09% Mn, and 1.2% Na (sodium??? isnt this bad? but I've read recipes with 4 cups of rock dust for each cuft of soil...)
1/2 cup azomite 0-0-.2 with 1.8% Ca, .1% Cl, .1% Na
1/2 cup Roots Elemental .25-.01-1 with 20% Ca, 2% Mg, 1% S, and .2% Fe
1 cup dolomite lime 0-0-0 but 22% Ca, 11% Mg
1/2 cup gypsum 0-0-0 but 20% Ca, 16% S (can you have too much S? getting a bit worried about that one as well...)
3/4 cup epsom salt 0-0-0 composed 100% of MgSO4·7H20, so 22% S, 11% Mg (wish I could've left this out altogether but its one of the first things I added befor I knew about langbeinite etc)
4 cups diatomaceous earth 0-0-0 but has good long term silicon
4 cups organic basmati rice (not sure of NPK but is good food for fungi and provides silica as well)
3 tbs humic acid powder

So what do you guys think....did I overdo it with the Mg, or the S? Can I safely add a cup or two of crab meal? 2-3-0 and has something like 30% Ca. Would be great to know if I did cause I can always cut the mix with more soil and add more amendments of other sorts to try and balance things out.

been reading Teaming with Microbes and it's improving my knowledge of soil science 100-fold. Definitely a must read if you are going to tweak subs recipe..which IMO can definitely be tweaked for more biological diversity as well as recycling capacity. The availability of nutrients is definitely a key to understanding soil science, with some reaching only 50% availability after months and months...important if you want a long term source of nutrients for recycling.

So what do y'all think? kushking if you're out there i'd love to hear your 2 cents

I think you should stick with Subcool's tried and true mix, 30 years he's been working on it...not hatin' on ya , just sayin'

I feel ya MrGreenTooth...but if you read the beginning of this thread youll see its all about those who want to stray from the original recipe. We know its tried and true. We know its foolish to mess with it. But we're too curious to care really . We know it works, now we want to find something that works even better and is more suitable for long term use, soil recycling, no till practices, etc.

Diversity seems to be the key to a health Soil Food Web, and IMO subs original recipe isn't diverse enough to benefit from long term use and soil recycling without adding tons of amendments later on. What we are trying to do is add some of those amendments at the beginning, so that when the regular recipe's nutrients are winding down our additional amendments are kicking in and providing the soil with a much needed boost (this doesn't happen for months - longer than most people use their soil anyway).

Hope this kinda clears up what we are trying to do here....no disrespect to subs recipe obviously - the man knows what he is doing - we are just those annoying bastards who can't follow rules without questioning them and then making up our own instead...

roots already has the sul po mag...second thought maybe it dont.

My bag says "Coarse peat, coco fiber, compost, perlite, pumice, worm castings, bat guano, fish bone meal, soybean meal, feather meal, and kelp meal."

So I think its lacking in the sul-po-mag department...

good lookin out tho...