size of soil particles and their classification

soil particle size and their classification [no_toc]

Soil particles

USDA

ISSS

Clay <0.002 mm 0.002 mm
Silt 0.002 –0.05 mm 0.02 mm
Very fine sand 0.05 –0.1 mm –
Fine sand 0.1 –0.25 mm 0.2 mm
Medium sand 0.25 –0.5 mm –
Coarse sand 0.5 –1.0 mm 2 mm
Very coarse
1.0 –2.0 mm
–

USDA – United State Department of Agriculture
ISSS – Indian Society of Social Science

 

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