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It is often referred to as "free soil" to the surface parts of the land whose quantitative composition is in optimal proportions or very close to them. It is a soil of high agricultural productivity, by virtue of its:

Relatively loose texture - sand-propelled - Although the composition of the free soil may vary slightly, the proportions can be considered uniform.

the following percentages:

Sand: 45 Limo: 40 Clay: 15

of this type of soil is that it is not too clayy or too sandy. Example of free soil is the one that abounds in the vegas of the rivers.

Variations

Variations can occur in the free soil proper, depending on the component with the highest proportions. If the following occurs:

Your sand content is a bit more than the optimum is called franco-sandy . What is in excess is clay, is known as loamy clay .

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