| *** Taxonomy Characterization Data *** |
| Pedon ID: 91IL163004 | ( St. Clair, Illinois ) | Print Date: Dec 6 2025 12:42AM |
| Sampled as : | Darmstadt |
| Revised to correlated on May 1, 2000: | Coulterville ; Fine-silty, mixed, superactive, mesic Aeric Albaqualf |
| United States Department of Agriculture | ||||
| SSL | - | Project | RP91IL142 ST CLAIR COUNTY SODIUM SOILS STUDY | Natural Resources Conservation Service |
| - | Site ID | 91IL163004 | National Soil Survey Center | |
| - | Pedon No. | 91P0612 | Soil Survey Laboratory | |
| - | General Methods 1B1A, 2A1, 2B | Lincoln, Nebraska 68508-3866 | ||
| Taxonomy Tier 1 | -1- | -2- | -3- | -4- | -5- | -6- | -7- | -8- | -9- | -10- | |||
| Fine | CaCO3 | 1500 | .1-75 | Bulk | Cole | Vol | Resist | ||||||
| Clay | Clay | Clay | kPa | Clay | mm | Den | Whole | % of | Min | ||||
| Depth | <.002 | <.0002 | <.002 | /Clay | Est | Frac | 33 kPa | Soil | Whole | % | |||
| Layer | (cm) | Horz | Prep | (---------% of <2 mm-------) | (-------- % --------) | g cm-3 | cm cm-1 | ||||||
| 3A1a1a | 8D1 | ||||||||||||
| 91P03440 | 0-21 | Ap | N | 15.9 | 0.84 | ||||||||
| 91P03441 | 21-50 | Bt | N | 36.1 | 0.46 | ||||||||
| 91P03442 | 50-75 | Btg1 | N | 31.2 | 0.53 | ||||||||
| 91P03443 | 75-100 | Btg2 | N | 28.5 | 0.54 | ||||||||
| 91P03444 | 100-125 | Btg3 | N | 27.8 | 0.45 | ||||||||
| 91P03445 | 125-150 | Btg4 | N | 31.3 | 0.44 | ||||||||
| Taxonomy Tier 2 | -1- | -2- | -3- | -4- | -5- | -6- | -7- | -8- | -9- | -10- | -11- | -12- | -13- | -14- | -15- | -16- | |||
| pH | pH | Org | Tot | Al+½ Fe | CO3 as | (--- Base Sat ---) | NZ | ECEC | CEC7 | ECEC | Al | ||||||||
| Depth | H2O | NaF | C | C | Oxal | ODOE | CaCO3 | NH4 | Bases | P Ret | cmol(+) | /Clay | /Clay | Sat | E C | ESP | |||
| Layer | (cm) | Horz | Prep | (------------------------------------------ % --------------------------------------------) | kg -1 | % | dS m-1 | % | |||||||||||
| 4C1a2a | 6A1c | 6E1g | 8D1 | 8A3a | 5D2 | ||||||||||||||
| 91P03440 | 0-21 | Ap | N | 5.4 | 1.59 | 0.72 | 2 | ||||||||||||
| 91P03441 | 21-50 | Bt | N | 4.9 | 0.39 | 0.62 | 0.52 | 0.67 | 8 | ||||||||||
| 91P03442 | 50-75 | Btg1 | N | 7.5 | 0.19 | 0.70 | 0.91 | 12 | |||||||||||
| 91P03443 | 75-100 | Btg2 | N | 7.8 | 0.08 | 0.73 | 0.64 | 9 | |||||||||||
| 91P03444 | 100-125 | Btg3 | N | 7.8 | 0.08 | -- | 0.72 | 8 | |||||||||||
| 91P03445 | 125-150 | Btg4 | N | 7.8 | 0.06 | 0.70 | 0.50 | 4 | |||||||||||
| Pedon Calculations | |||
| Calculation Name | Result | Units of Measure | |
| CEC Activity, CEC7/Clay, Weighted Average | 0.65 | (NA) | |
| Clay, carbonate free, Weighted Average | 34 | % wt | |
| Clay, total, Weighted Average | 34 | % wt | |
| Weighted averages based on control section: 21-71 cm | |||