| *** Taxonomy Characterization Data *** |
| Pedon ID: 90MT097013 | ( Sweet Grass, Montana ) | Print Date: Feb 16 2025 5:53AM |
| Sampled as on Apr 30, 1990: | Linwell ; Clayey over loamy-skeletal, montmorillonitic |
| Revised to : |
| United States Department of Agriculture | ||||
| SSL | - | Project | RP91MT068 SWEET GRASS COUNTY BULK DENSITY | Natural Resources Conservation Service |
| - | Site ID | S1990MT097013 Lat: 45° 45' 33.70" north Long: 109° 46' 42.86" west | National Soil Survey Center | |
| - | Pedon No. | 91P0259 | 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 | 3A1a1a | 8D1 | |||||||||||
| 91P01579 | 0-20 | A | S | 34.3 | 0.55 | 28 | 9 | ||||||
| 91P01580 | 20-41 | Bt1 | S | 64.9 | 0.42 | 6 | 3 | ||||||
| 91P01581 | 41-69 | Bt2 | S | 60.2 | 0.43 | 8 | 3 | ||||||
| 91P01582 | 69-107 | 2Bk | S | 20.2 | 0.3 | 0.45 | 88 | 53 | |||||
| 91P01583 | 107-152 | 2C | S | 5.3 | 0.79 | 95 | 49 | ||||||
| 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 | 5C1 | 5C3 | 8D1 | 5D2 | |||||||||||||
| 91P01579 | 0-20 | A | S | 6.6 | 3.50 | 97 | 84 | 0.98 | tr | ||||||||||
| 91P01580 | 20-41 | Bt1 | S | 7.3 | 0.96 | 96 | 92 | 0.72 | 1 | ||||||||||
| 91P01581 | 41-69 | Bt2 | S | 7.9 | 0.87 | tr | 100* | 100 | 0.72 | 1 | |||||||||
| 91P01582 | 69-107 | 2Bk | S | 8.1 | 0.24 | 5 | 100* | 100 | 0.87 | 3 | |||||||||
| 91P01583 | 107-152 | 2C | S | 8.4 | 0.05 | 1 | 100* | 100 | 1.66 | 5 | |||||||||
| Pedon Calculations | |||
| Calculation Name | Result | Units of Measure | |
| CEC Activity, CEC7/Clay, Weighted Average | 0.72 | (NA) | |
| Clay, carbonate free, Weighted Average | 62 | % wt | |
| Weighted Particles, 0.1-75mm, 75 mm Base | 7 | % wt | |
| Volume, >2mm, Weighted Average | 3 | % vol | |
| Clay, total, Weighted Average | 62 | % wt | |
| Weighted averages based on control section: 20-69 cm | |||