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March 12, 2020
We utilize math based on several popular sources that are duplicatable.
The key difference with potting soil is that we had to learn over time the differences with testing and amending potting soil vs. Field soil.
1. The field soil is heavier and lbs per acre is based off of a standard weight of soil. Potting soil is much lighter. How do we adjust? Do we? This is important.
2. Organic matter is far higher than normally found on any farm.
3. We can cut the soil or leach the soil easily where with an acre.... it's more challenging.
Check out "The Ideal Soil 2.0" from Michael Astera whom I'm in direct contact with and he is available to do your soil interpretation through buildasoil.com or you can read his book.
Also check out, "The Intelligent Gardener" by Steve Solomon. He also works with BuildASoil.com and is available to do your interpretation or you can read his book!With either of those resources you'll be able to do most of this yourself but of course we will be here to help if you wish.
Also check out our soil tests: https://buildasoil.com/collections/soil-testing
We would recommend a water test also.
Beyond that, the https://buildasoil.com/products/logan-labs-soil-test is the way to go. It's a standard set of 3 tests that we employ with potting soil to be accurate. Once you get these test results you will need to convert the Soil test into a working set of fertilizers and amendments with a Farm Plan. To do this you can read the books mentioned or you can pay for our services! Available via BuildASoil Professional, Michael Astera or Steve Solomon.
Soil Sample taking info: https://loganlabs.com/doc/Soil%20Sampling%20Instructions.pdf
Basically we need a sample of at least 2 cups of potting soil. Move the mulch layer back and take a sample from the top 6 inches or so. You can also do a deep test if your containers are deeper and test them separate.
Alternative from the specific bed test. Many growers will take multiple samples in a bucket, mix together and then take 1 homogeneous sample to make testing affordable. Both ways are acceptable but the most accurate is always more tests. It's up to the grower to test as much as they want and usually they learn enough during the process to make a Standard procedure as to how they like to sample. #1 Standard Soil Test Plus Extras - Extras: Cobalt, Molybdenum, Ammonium Nitrogen, Nitrate Nitrogen, Selenium, Silicon, EC
#2. AA 8.2 - This test is used to accurately determine the Calcium because potting soil has added calcium it acts similarly to alkaline soil in that it can falsely report high levels of adsorbed calcium in the soil. Once we have the AA8.2 we take the calcium # and use it to replace the calcium # from the Standard Test. Then we recalculate CEC. This allows us to be accurate!
#3 The Saturated Paste test which many agree is not accurate because it only shows what is water soluble when we know that plants exude acids and microbes break things down. That being said, We still use it because these things take time to happen and when we take a snapshot of what is water soluble we get two forms of results. a. Fresh Made soil: Even though the soil test looks good, is there something way out of whack on the water soluble test that we could address?
b. No-Till Beds and Used Soil: We can see what is water soluble available just like the fresh potting soil but it goes to suppose that we are also seeing what the plants made available to be water soluble over time. Normally what we see over time in beds managed properly are very good water soluble tests and not always with freshly made soil. That's why all this data is valuable.
I hope that helps.
August 25, 2020
September 08, 2020
August 31, 2020
If you have been reading about cultivating indoors with organic soil then you've heard of SubCool's Super Soil. I admit to starting with this mix and thought I was really doing something special when I first went for it. I bought all the stuff and was really excited to use it.
My results were actually pretty good, but I've since moved on I think you should too.
Besides the "base soil" being purchased instead of made from scratch, I have many other issues. All in all this taking bagged soil and adding worm castings and nutrients isn't a bad idea, but it can be improved upon and money can be saved.
Here is the Recipe: 8 large bags of a high-quality organic potting soil with coco fiber and mycorrhizae (i.e., your base soil) 25 to 50 lbs of organic worm castings 5 lbs steamed bone meal 5 lbs Bloom bat guano 5 lbs blood meal 3 lbs rock phosphate ¾ cup Epson salts ½ cup sweet lime (dolomite) ½ cup azomite (trace elements) 2 tbsp powdered humic acid
Now I'll go through each item: Read more.....
August 03, 2020