A lot of questions, and don't get put off after only 10 pages. If you stick to the book, you will read some sections many times for clarity. The important message is how soil fertility imparts complete nutrition in a forage plant for a grazing animal. Don't be fooled by "rich forests of trees". Trees don't need anywhere near the kind of fertility it takes to produce nutrition dense forage. Oregon produces millions of Christmas trees and board feet of Douglas fir, but it's a notorious cesspool of equine metabolic disorders due to the high sugar, low mineral forage grown here. If you understand this, you will be a pioneer. So I'll tackle your questions as best I can, but maybe only one at a time. First of all, "radio conductivity". There's a map on page 5 of "ground conductivity". So I have looked up "ground conductivity" and here is where you can begin learning about how soil minerals impact plant growth. https://www.nrcs.usda.gov/Internet/F...2p2_053280.pdf
I confess, I did not dwell on this section of the book.
I also looked up the definnition of "radio" and got this: Definition of radio
(Entry 1 of 4)
of, relating to, or operated by radiant
of or relating to electric currents or phenomena (such as electromagnetic radiation
) of frequencies between about 3000 hertz and 300 gigahertz
In the caption under the map on page 5, Albrecht makes the connection between the excellent soil conductivity AND radio conductivity in the US along the 98th meridian of longitude, west. I don't presume to understand the science, but I believe he's establishing a correlation between soil conductivity, radio conductivity and the deep fertility, which comes about as a result of electrical conductivity in the soil, that sustained millions of grassland animals in that region of the North American continent.
As you read on, you will come to understand that soil fertility is all about electrical attraction of positively and negatively charged "elements" within the soil. Clay colloid and humus are negatively charged. Calcium and Magnesium are positively charged, for example. A soil with the right amounts of clay colloid and humus, has a very high affinity for attracting and holding the positively charged calcium and magnesium (this is only an example), IF those minerals are available to begin with. Eastern and Pacific Northwestern soils are eroded and can be cold, which limits the microbial life that "exchanges" minerals with plant roots for a bit of nourishing carbohydrates exuded by the plant roots. As you can see, the extreme west and the extreme east have soils that have been "destroyed" (no conductivity) by excessive erosion, limiting their ability to "become" fertile because they lack the electrical attraction for holding mineral nutrients in the root zones of grass (specifically). You can ADD minerals but if the clay and humus cannot hold them in the root zone they will leach into the subsoil...IF they were ever present to begin with. Over a period of many years, our poor eroded Pacific Northwest soil failed to achieve a sustainable and significant level of fertility. Oh the grass grew like mad, but it never achieved the nutritional value that it could have, nor the "persistence" of desirable grass species, had the soil been intrinsically able, through electrical attraction, to hold the minerals we applied in the root zone. Any soil amendment (mineral) that cannot find an "attachment point" on the clay colloid, or the humus, will leach and go to perdition. Thus we spent thousands of dollars adding minerals to the soil, only to have to replenish them again the next growing season. For reference, our place is situated on a 10 million year old lava bed that has weathered to red clay. "Weathered" in this case means that the soil is degraded to a point where it is functionally infertile. This lava field is situated at certain elevations in Oregon. Different elevations have different soil profiles and will be more or less fertile. For instance, about 50,000 years ago, massive ice dams formed on the Columbia river, when they broke, they flooded the Willamette Valley up to 400 feet deep, depositing soils from as far away as Montana. These floods were called the Missoula floods. The Willamette Valley is the "breadbasket" of Oregon. At our elevation, the pioneers came through, looked around, went "meh," and continued on a few more miles to "the end of the Oregon Trail" in Oregon City, and dispersed into the Willamette Valley, where things had a chance to grow.