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USDA chart
Key:
1 - clay |
5 - loamy sand |
9 - silty clay |
2 - sandy clay |
6 - sand |
10 - silty clay loam |
3 - sandy clay loam |
7 - clay loam |
11 - silt loam |
4 - sandy loam |
8 - loam |
12 - silt |
Sizes of primary particles:
Clay (mm) |
Sand (mm) |
Silt (mm) |
<0.002 |
0.05 - 2.0 |
0.002 - 0.05 |
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