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Does anybody use Biochar as component of soil mix?

pseudostelariae

Active member
i'll be running a 2 clone side by side with a mix of 1:1:1 coco, worm castings, and perlite vs the same with 5% inoculated biochar in about a month. will be sure to post pictures of the progress.
 

chappie

Well-known member
Veteran
I grabbed some char at KIS Organics while I was there. Black Owl brand out of Washington. Looking forward to giving it a try.
 

chappie

Well-known member
Veteran
What is the ideal "charging" solution? The web has all kinds of stuff to say... fish emulsion, urine, even miracle gro. I am leaning towards ACT.
 

xmobotx

ecks moe baw teeks
ICMag Donor
Veteran
the key is N. as a high-carbon input, char can tie up N & cause problems

i used alfalfa. but, again~ any N high amendment. also a good idea to cycle your compost w/ char {once charged w/ N}
 

Microbeman

The Logical Gardener
ICMag Donor
Veteran
Including it in a round of compost is an excellent idea. I do not know whether putting it in an active worm bin is effective but I would guess soaking it in a vermicompost slurry would be. We have soaked it in ACT for a short duration to ensure high aerobic activity with success.

We had less success mixing the char with soil/media then soaking with ACT. We experienced the proverbial N lock up and yellowing of plants.

FYI, IMO, IME & AFAIK (how is that for Internet speak?) nitrogen lock up occurs when there is a high rate of carbon, such as lots of wood - lignin and the soil microorganisms utilize all the available N as fuel to degrade the carbon, robbing N from the plants. This usually takes place only when non-composted substances are mixed into the soil/media rather than topdressed. This is the reason I keep recommending topdressing raw organic matter.
 

trichrider

Kiss My Ring
Veteran
I concur tim.
strictly organic precludes miraclegrow.
I used ACT, alfalfa meal, and kelp meal combined...not to take chances (I didn't pee in it).
long soak...
added to both garden and compost pile.
 

chappie

Well-known member
Veteran
Thanks... ACT it is. I'll likely be documenting my mix in the ROLS subforum as well as on the ACE one, since Orient Express will be the test crop.
 
C

ct guy2

Mine is from Black Owl and is a combination of both. I feel like this also gives me a bit of aeration in my soil and will slowly break down over time.
 

stoned-trout

if it smells like fish
Veteran
mine is from my stainless steel smoker box and is whatever I want...so I am recycling what I used to throw away...organics rule ...yeehaw ...and yes I grill a lot... I also make char cloth for camping
 

Siskiyou

Active member
Veteran
Excellent ST. I have been using the char from my electric stainless steel smoker box as well, adding it to my worm bin, where it eventually finds its way into my soil.

I got one of these last year and I love it.
http://www.smokin-it.com/Smoker_p/smkmdl1.htm

This style smoker uses hardwood chunks and I have incorporated cherry, hickory and pecan char into my soil as a result.

My worm bin has also received the dust from Lazzari mesquite charcoal and some homemade dogwood char on other occasions. Worms love it, in moderation I'm sure, and so far I like it as part of my soil strategy.
 

Cool Moe

Active member
Veteran
Is biochar best to use crushed to a powder or better as small fragments?

I crush mine with the car after I soak it in kelp water. First soak it for a day, then drain the water and use it later. Fill and crush about half a bag at a time, helps if someone moves the bag of coals around while the driver rolls over and back, so ya don't have to keep getting out. Then add it to your mix at rate of 2.5% to 5%, no more than 5%. 1 part of 20.
 

Bueno Time

Active member
ICMag Donor
Veteran
Ive been reading a decent little bit on Terra Preta and biochar lately and want to try it in my soil next run.

I was looking at buildasoil website has 4 gallons of biochar for $25 shipped but shipping is the killer and makes the cost so high. I saw bags of mesquite lump charcoal for $4 at the grocery store the other day, could I use that at 5% or less in my soil mix provided I soak in some fish hydrolysate, kelp extract, molasses and ewc or brew an ACT, possibly humic acid concentrate in small amount if recommended?

I only need a real small amount right now I am just starting running two soil batches perpetually with one re-amended and "cooking" while the other is flowering. The batches are small, 18-20 gallons each since I only run a 6 sq ft flowering space thats all the soil I need really. Anyway point being I need very little so buying it and having it shipped is not cost effective so either should I get the $4 bag of mesquite lump charcoal which will be enough for both soil batches will run or should I make one of those nifty paint can biochar furnaces and make my own?

Also I have an old "dead" carbon filter around, granulated carbon not pellets, if that would be good to use then I can use that its already broken into tiny pieces.
 

Siskiyou

Active member
Veteran
Bueno, as long as the mesquite charcoal is 100% mesquite then it shouldn't be a problem at all.

I have never tried the carbon from a filter.

Re: BuildASoil, check out the build a box option for small custom orders. I just ordered a 40 cup box of small black lava rock, oyster shell flour, mineral mix, glacial rock dust and basalt.

http://buildasoil.com/products/build-a-box-large
 

Bueno Time

Active member
ICMag Donor
Veteran
Nice, ya I was going to do the build a box 40 cup box too once I decide what amendments Im going to be using to re-amend or top dress and decide how many cups of each to get. Right now I have the BAS ClackamasCoots kit in my soil mixes right now. Has all kinds of good stuff in it, neem, karanja, crustacean meal, kelp, glacial rock dust, brix blend basalt, gypsum, and oyster shell.

Probably will stick with those amendments when I order a build a box and add a couple more inputs in small amounts for more variety.
 

Siskiyou

Active member
Veteran
Thinking about it, it was probably reading your thread that I first found out about buildasoil since it was quite recent. I was happy for the reference, even though I immediately forgot where I read it, since it allowed me to get small amounts of some items I wanted to incorporate into my soil for the sake of diversity and remineralization in the long run. Thank you for mentioning them.
 

Mikell

Dipshit Know-Nothing
ICMag Donor
Veteran
HAH! Glad I am not the only one using smoker refuse. Big Chief never saw this coming.... XD

I haven't really looked in to this, but there was a commercial biochar producer on here recently, claiming that temperature was key, the higher the better. Any idea'rs on that? I may poke around the ternetin later today.
 

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