Soil Particle and Soil Texture:
The average diameter of grains of soil is one of the major variable used to identify
the taxonomy of the soil. There are three universally recognized soil particle sizes
classes: sand, silt, and clay.
Sand, silt, and clay-size particles play different roles in the soil formation process.
Soil particles with sand-size diameters enhance soil drainage. Conversely, silt and
clay-size soil particles enhance the movement and retention of soil capillary water.
40
Soil Particles:
Gravel: larger than 2mm; feels
coarse
Sand: 2 - 0.05mm; feels gritty
Silt: 0.05 - 0.002mm; feels like
flour
Clay: smaller than 0.002; feels
sticky when wet
Every soil type is a mixture of
sand, silt, clay, and organic matter.
4. Remote sensing of soil
Soil Particle and Soil Texture: The average diameter of grains of soil is one of the major variable used to identifythe taxonomy of the soil. There are three universally recognized soil particle sizesclasses: sand, silt, and clay. Sand, silt, and clay-size particles play different roles in the soil formation process.Soil particles with sand-size diameters enhance soil drainage. Conversely, silt andclay-size soil particles enhance the movement and retention of soil capillary water.40Soil Particles:Gravel: larger than 2mm; feelscoarseSand: 2 - 0.05mm; feels grittySilt: 0.05 - 0.002mm; feels likeflourClay: smaller than 0.002; feelssticky when wetEvery soil type is a mixture ofsand, silt, clay, and organic matter.4. Remote sensing of soil
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