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   Get new notes here - NOTES