View Single Post
Old 03-06-2010, 04:09 PM
BlizzOut's Avatar
BlizzOut BlizzOut is offline
Senior Member
Join Date: Feb 2009
Location: Europe
Posts: 810

Exactly, mate.
Beside where I read "study" of Mr.J.C. how roots can go deeper than 2m () here is what science says about it.
The soil as what it is today, is a result of many factors coming together: climate, parent material, local topography, vegetation, living organisms and, of course, time. All of the factors can be involved in various degrees, which is why there are many thousands of soil types. The solid bulk of soil consists of minerals and organic matter. In between the solid particles are pore spaces, which are filled with varying amounts of air and water. The pore sizes and how they are connected within the soil bulk, determine the quality of soil aeration. Aeration refers to how water and air are held within a soil sample.

In looking closer at soils, it is important to understand that there are general regions or horizons of soil development that are usually obvious in an undisturbed area. For example, if we found an undisturbed area, and dug down 3 to 6 feet (1 or 2 meters), we would likely find a soil profile (cross section of the horizons) of three integrated horizons. The composition and stage of development will obviously vary widely depending on where the soil profile is taken. The top horizon is called the A horizon or topsoil. This horizon is usually 4 to 8 inches on average, again depending on where your sample is from. The A horizon is further subdivided into a darker upper portion, called the A1 horizon and a lighter lower portion A2 horizon. The A1 horizon contains the majority of the organic material out of the three integrated horizons. The next horizon is the B horizon, or the subsoil. This is usually 1 or 2 feet deep on average. The subsoil usually contains more clay, so less pore spaces, and is lighter in color than the topsoil. The lowest horizon is called the C horizon and it could be 4 inches to 10 feet deep or it may not be present. The C horizon is called the soil parent material and it extends down to bedrock.

A1—darker upper portion of topsoil

A2—lighter lower portion of topsoil


C—soil parent material

Plants normally forming root system wide cause at deep is nothing woth of minerals what they can use + its clay and no air.

L33t, I believe light intensity and natural eviroment is why some growers made hermies of Mostly Sativa genetics.
They do not have enough lght in the room and whola ... its hermie.
These plants want more intense light but unfortunately they got just couple CFL bulbs, if couple at all.
Reply With Quote