What is Soil?

Soil is the voluminous upper part of the earth crust that supports land plants by holding them and by providing them with nutrients, water and air.

Soil consists of unconsolidated inorganic particles, partially decomposed organic fragments, and pore spaces between and within.

Soil Pore spaces contain soil air, and soil solution.

Therefore, a soil volume consists of solid, liquid and gaseous phases

It is inside the pores that soil particles, soil water and living
plant roots interact and create the Soil - Water - Plant
relationship that is the key to safe growth and successful
production of land plants

Quantity of pores, shape of pores and the magnitude of pores depend on the geometrical and mineralogical properties of the surrounding inorganic soil separates, their extent and their
physical arrangements, or simply their Textural Classification
and Structure

Adequate knowledge of Soil Textural Classification and Soil Structure can contribute greatly to the advancement of the
proper management of Soil - Plant - Water relationship

It is inside the pores that soil particles react with soil water chemically, dissociate, and release chemical molecules that determine the chemical constituents of the soil solution

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