| *** Taxonomy Characterization Data *** |
| Pedon ID: 91IL189001 | ( Washington, Illinois ) | Print Date: Dec 11 2025 9:31PM |
| Sampled as : | Oconee-Darmstadt |
| Revised to correlated on Jan 1, 1993: | Darmstadt ; Fine-silty, mixed, superactive, mesic Typic Natraqualf |
| United States Department of Agriculture | ||||
| SSL | - | Project | RP91IL141 WASHINGTON COUNTY NATIONAL STUDY | Natural Resources Conservation Service |
| - | Site ID | 91IL189001 | National Soil Survey Center | |
| - | Pedon No. | 91P0599 | 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 | ||||||||||||
| 91P03363 | 0-25 | Ap | N | 11.8 | 1.37 | ||||||||
| 91P03364 | 25-50 | Bt1 | N | 31.0 | 0.48 | ||||||||
| 91P03365 | 50-75 | Bt2 | N | 25.0 | 0.49 | ||||||||
| 91P03366 | 75-100 | Btg1 | N | 26.3 | 0.42 | ||||||||
| 91P03367 | 100-125 | Btg2 | N | 23.4 | 0.64 | ||||||||
| 91P03368 | 125-150 | Btg3 | N | 17.3 | 0.60 | ||||||||
| 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 | ||||||||||||||
| 91P03363 | 0-25 | Ap | N | 5.9 | 1.00 | 0.86 | 0.67 | 4 | |||||||||||
| 91P03364 | 25-50 | Bt1 | N | 7.3 | 0.62 | 0.71 | 0.75 | 20 | |||||||||||
| 91P03365 | 50-75 | Bt2 | N | 8.8 | 0.14 | 1 | 0.83 | 1.89 | 30 | ||||||||||
| 91P03366 | 75-100 | Btg1 | N | 8.8 | 0.11 | 1 | 0.88 | 1.67 | 30 | ||||||||||
| 91P03367 | 100-125 | Btg2 | N | 8.8 | 0.14 | tr | 0.83 | 2.24 | 32 | ||||||||||
| 91P03368 | 125-150 | Btg3 | N | 8.3 | 0.10 | tr | 0.80 | 19 | |||||||||||
| Pedon Calculations | |||
| Calculation Name | Result | Units of Measure | |
| CEC Activity, CEC7/Clay, Weighted Average | 0.77 | (NA) | |
| Clay, carbonate free, Weighted Average | 28 | % wt | |
| Clay, total, Weighted Average | 28 | % wt | |
| Weighted averages based on control section: 25-75 cm | |||