Field Dimensions Guide

Understanding a Soil Test Report

[Sample Soil Test Report][Sample Soil Test Report]
1. FIELD CLASSIFICATION ICON. Identifies what classification the field being tested is targeted at. Water availability and maintenance resources (manpower) dictate the field classification and it’s respective infield soil specifications.

2. SAND CONTENT BOX. Indicates what the total sand content specification is for the field classification indicated above it.

3. SOIL TEXTURE TRIANGLE. The blue star indicates where the tested soil lies on the triangle. The three strips showing the SCR scale in the lower left corner of the triangle indicate where the three soil specs for the different field classifications lie on the graph. Ideally, the infield soil tested should land in the bright green area indicated on this graph.

4. TEXTURE ANALYSIS. Indicates the total percentage of sand, silt and clay found in the infield soil sample. Check this percentage of sand with respect to what is specified in the Sand Content Box (#2).

5. SCR NUMBER. The SCR number, or silt-to-clay ratio, is found by dividing the amount of silt in the infield soil by the amount of clay. The ratio is indicated in the box and the color used to fill the box reflects where the SCR relates on the SCR scale. The ideal SCR for ALL infield soils is between 0.5 and 1.0.

6. COARSE SAND PERCENTAGE. Identifies the total combined amount of the medium, coarse, and very coarse sand that is present in the overall soil sample. The background of this box will be white when the number does not match the specs for the classification that is being tested for. When the amount falls into the proper spec for the desired classification, the background will turn the color of the matching specification shown in the boxes below the sand fraction analysis.

7. SAND SHAPE ANALYSIS. Indicates the shapes of the sand particles that were present in the tested sample. Sphericity indicates whether the shape of the sand particles were more globe shaped or elongated. The Angularity indicates how smooth or jagged the surface of the sand particles were. The green box indicates the “ideal” shapes preferred for an infield soil while the blue box indicates the results from the tested sample.