OK, I'll try to get this right. I'm still trying to figure out how to insert the photos into the text.
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These are pix of the ingredients that go into my potting mix for transplants. I used young Tomato plants for this tutorial.
Epsom salts(Magnesium)
Liquid Ironite(A good mix of Micronutrients)
OreGro(unavailable unless you run into someone who used to sell it, as I did. Volcanic ash will replace it.
Superthrive(which I use any time the possibility of stress exists.)
Cytozyme Lab's Soil(Derived from bacteria, this product accelerates bacterial activity, making more nutes available.)
Depending on my mood or observations, I'll often add, in small quantities,
Sulfate of Ammonia 21-0-0
Fish emulsion
Seaweed Emulsion
Beneficial Fungi
Guano
It is easy to over do this!
Err on the light side.
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These pix show the potting soil and additives before adding water. Water helps the nutes to mix evenly in the potting soil. Note how this inexpensive potting soil has little perlite in it. This is a good thing.
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Another shot, showing the bottle of Superthrive and newsprint I use to line each pot. This replaces gravel to help keep soil from washing out the drainage holes.
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The middle pix shows the consistency of the mix, which resembles runny oatmeal. Not how I line the pots with newsprint, taking care to keep it below the soil level, to avoid wicking moisture away from the roots.
The paper helps during future transplants by protecting roots from the air. The roots easily penetrate the paper into new soil when placed in a larger pot.
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I use a small tub to catch runoff from the slurried mix, returning it to the bucket, periodically.
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I add slurry up to the desired level. I usually remove lower leaves so that I can place the young plant deeper. This adds stem that can generate more roots.
With Cannabis I usually add rooting powder to help new roots form. Not so, with tomatoes.
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I place the young plant into the slurry.
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I pour slurry around the root ball, taking care to hold the plant upright until the plant is stable.
There are a lot of reasons to use the Slurry Method.
The water washes the soil into all the gaps around the root ball.
The water compacts the soil to a perfect density, making good contact with feeder roots, while leaving plenty of tiny gaps for air to carry oxygen to the roots.
By adding small amounts of nutrients to the soil, the transplant does a light but thorough feeding, that would be very difficult to accomplish with most other methods.
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All done. I placed them in a greenhouse, where they vegged until the weather warmed up.
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One of the plants a few weeks later, just prior to going in the ground.