What ration's to mix organic ammendments into soil?

aussie (OZ) grower

Active Member
Just starting my outdoor grow, and have 8 x 50L pots at my site, and enough for each pot to have 30L potting soil, 10L coco/perlite, 10L organic soil improver
Just like a pre bagged compost mix you can buy at the garden store
I decided last minute to go organic for the grow, my soil isnt in the pots yet but its at my site, so i just need to mix in the ammendments
i bought 5kg blood n bone, 5kg dolomite lime, a bottle of seaweed concentrate liquid fertaliser, and some potash for flowering
How much roughly should i be putting into each pot of the blood n bone and the dolomite lime? thanks and if theres anything else i should add let me know
Cant get castings or guano where i live :/
 

Liddle

Well-Known Member
order that guanao cause that blood and bone needs to be broken down to be available for the plants ive heard
 

Andrew2112

Well-Known Member
You should let the amendments breakdown first so that it doesn't hurt the plant I have burned a plant using blood meal and guano
 

May11th

Well-Known Member
Yeah you have to mix it and let sit for minimum of 3 weeks but I would say 1 table spoon per gallon is safe. I would buy some kelp meal, alfalfa meal, some Epsom salts, oyster shell meal, rock phosphate, order shit off amazon, then add some form of mychorriziah, do you knlowmuch about organics, just try to creare a little ecosystem, look around your area, scope out where everything is thriving and try to find good dirt to incorporate into your soil, could be very beneficial.
 

aussie (OZ) grower

Active Member
Unfortunatly i dont have time to let it sit so i might add everything in except like 5L of potting soil, and when i transplant the seedlings i will make a layer of straight potting soil for them to grow into, give to soil time to cool. Unfortunately i live in australia and dont really have access to many of these, especially given the time frame
so i might stick with with a bit more compost, blood n bone meal, dolomite, then water with a combination of liquid seaweed fertaliser, compost tea, and in flowering black strap molasses and potash, i dont know too much about adding Benaficial bacteria? if anyone could point me in the right direction there i would consider using them if they will do my plant good
 

Nullis

Moderator
Blood n bone is slow release with more nitrogen, and guano is high in potassium, doesnt seem like they would effect eachother
Blood meal is not slow release, it has significant amounts of soluble N (12-0-0). Bone meal is, however, although it also depends on the particle size of the bone meal, whether it was steamed, and the presence of mycorrhizal fungi and other beneficial microbes. Also, guano is notoriously LOW in potassium; but can have significant amounts of available N or P (phosphorous).

Beneficial bacteria can come from compost\humus\earthworm castings, and also may be present in some dry organic fertilizers (e.g. Espoma).
 

aussie (OZ) grower

Active Member
Thanks for the info, i'll get out and mix my soil, with some ammendments asap, so it has time to cool. 2/8 seedlings have sprouted into coco/perlite, and they will stay like that for about a week or two before being transplanted out to the pots. i heard coco has some good stuff in there for roots, that true?
 

st0wandgrow

Well-Known Member
Unfortunatly i dont have time to let it sit so i might add everything in except like 5L of potting soil, and when i transplant the seedlings i will make a layer of straight potting soil for them to grow into, give to soil time to cool. Unfortunately i live in australia and dont really have access to many of these, especially given the time frame
so i might stick with with a bit more compost, blood n bone meal, dolomite, then water with a combination of liquid seaweed fertaliser, compost tea, and in flowering black strap molasses and potash, i dont know too much about adding Benaficial bacteria? if anyone could point me in the right direction there i would consider using them if they will do my plant good

They're not optional. If your soil doesn't have an army of beneficial microbes then all of the organic items you're putting in your soil will be pointless. Those ingredients are being broken down and consumed by the microbes who in turn feed the plant through death and deification. This is why people let their soil sit for a period of time. It allows the microbes to break down the inputs in to bio-available food for the plant.
 

tikitoker

Active Member
True organic doesn't happen over night. amend your 50L pots and allow time for complete colonization. In the mean time keep in the coco/perlite and feed as thou you would hydroponic with a PH of 5.5-6.0 watch the amount of K you are feeding and adjust the calcium and magnesium as the coco will rob the seedlings of it.
 
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