Horizonal Soil System - Leighton Morrison

[GMO]

Soil biologist Leighton Morrison talks about soil horizons and biomimicry, creating the same soil horizons in raised beds and pots that exist in nature.

In this video, we use the horizonal soil system concept to fill a 30 gallon grass roots fabric pot.

The bottom layer is the E (eluvial) horizon, sand and gravel, which allows water to pass through but not organic matter. The next layer up is the A horizon, which contains mostly clay and silt and a little sand from the E horizon and some of the organic matter from the final layer (the top layer), which is the O (organic) horizon. The O horizon is an airy mixture of mulch, worm castings and other organic material.

Leighton Morrison
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If you look in a soil pit or on a roadside cut, you will see various layers in the soil. These layers are called soil horizons. The arrangement of these horizons in a soil is known as a soil profile. Soil scientists, who are also called pedologists, observe and describe soil profiles and soil horizons to classify and interpret the soil for various uses.

Soil horizons differ in a number of easily seen soil properties such as color, texture, structure, and thickness. Other properties are less visible. Properties, such as chemical and mineral content, consistence, and reaction require special laboratory tests. All these properties are used to define types of soil horizons.

Soil scientists use the capital letters O, A, B, C, and E to identify the master horizons, and lowercase letters for distinctions of these horizons. Most soils have three major horizons -- the surface horizon (A), the subsoil (B), and the substratum (C). Some soils have an organic horizon (O) on the surface, but this horizon can also be buried. The master horizon, E, is used for subsurface horizons that have a significant loss of minerals (eluviation). Hard bedrock, which is not soil, uses the letter R.

[ShapingFireuk]

Leighton Morrison is an animal sooo much knowledge that he gives people is insane ive been following him for over a year now and the guy just simply gets me inspired!
Highy recomended!