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Soil Research and Laboratory
Field Book for Describing and Sampling Soils — standards for observing and recording soil and site characteristics.
Field Indicators of Hydric Soils, version 7.0 (PDF; 5.3 MB)
Soil Survey Field and Laboratory Methods Manual (SSIR 51), version 2.0 (1-31-14; PDF; 10.3 MB)
Soil Survey Field and Laboratory Methods Manual (SSIR 51), version 1.0, obsolete. (11-2-09; PDF; 8.8 MB)
Soil Survey Office Laboratory Safety Guide, version 2.0 (8-29-16; PDF; 229 KB)
Lab Methods Manual (SSIR 42) - soil laboratory methodology and reference for the laboratory analyst.
Soil Survey Laboratory Information Manual (SSIR 45) - Companion reference to the Laboratory Methods Manual, SSIR No. 42. Sampling methodology, descriptions of KSSL data sheets, and other information to help users of lab data.
Testing Methods for Phosphorus and Organic Matter
Soil Sample Submission Protocol for the KSSL (11-29-16; PDF; 1.61 MB) - Documentation and worksheets (below) necessary for KSSL sample submission.