The 'Perfect' Gardening Soil Structure?
I'm really interested in learning more about the science behind soils. I'd like to start a discussion about the best way to amend any ordinary yard dirt to make it the perfect growing medium.
Please let me know if I have the basics correct:
* There are inorganic and organic matter in soil.
* Inorganic matter consists of sand, silt, and clay.
* Sand is the largest in particle size, then silt, with clay being the smallest.
* There is an optimal ratio of the 3 inorganic materials.
* Organic matter, such as compost, leaf mold, or bark can be added to the inorganic matter.
* Some organic matter are preferred over others as an amendment.
* There is an optimal ratio of inorganic to organic matter.
* The ratio of amendments differs in the ground vs in a raised bed.
* The method of amending is important, as you don't want to disturb the creatures in the soil food web.
Please add any information that is missing, or if you disagree with something. I'm particularly interested in the best method for adding amendments.
FYI, this all started because I started out with not enough organic matter (rocky clay) and now I think some of my beds have too much organic matter, which I didn't realize could be a bad thing. I'm sick of trial and error, as that has only cost me money and time, so I'd like to learn the science behind it first.