Agriculture Reference
In-Depth Information
Soil Texture Triangle
Modified from S.J. Thien. 1979. A flow diagram for teaching texture by feel analysis,
Journal of Agronomic Education. 8:54-55. United States Department of Agriculture, Nat-
ural Resources Conservation Service.
http://soils.usda.gov/education/resources/lessons/
When you've done your sedimentation test and know your percentages, you can use this
triangle to determine your soil texture. Follow your clay, sand and silt percentages into the
triangle, where all three intersect. This is your soil texture type. You may want to do this
test in a few places around your garden and average out the results. Knowing our soil's tex-
