| *** Taxonomy Characterization Data *** |
| Pedon ID: 90MT097007 | ( Sweet Grass, Montana ) | Print Date: Nov 21 2024 12:54PM |
| Sampled as on Apr 20, 1991: | Mcdonaldsville ; Fine-loamy over sandy or sandy-skeletal, mixed, frigid Typic Argiaquolls |
| Revised to : |
| United States Department of Agriculture | ||||
| SSL | - | Project | RP91MT068 SWEET GRASS COUNTY BULK DENSITY | Natural Resources Conservation Service |
| - | Site ID | S1990MT097007 Lat: 46° 8' 36.70" north Long: 110° 0' 27.91" west | National Soil Survey Center | |
| - | Pedon No. | 91P0257 | 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 | ||||||||||||
| 91P01572 | 0-20 | A | S | 24.7 | 0.62 | 69 | 34 | ||||||
| 91P01573 | 20-46 | Bt | S | 25.1 | 0.47 | 38 | 8 | ||||||
| 91P01574 | 46-76 | 2Bk | S | 9.4 | 0.61 | 80 | 36 | ||||||
| 91P01575 | 76-152 | 2C | S | 5.2 | 0.77 | 93 | 51 | ||||||
| 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 | |||||||||||||
| 91P01572 | 0-20 | A | S | 7.7 | 3.38 | tr | 100* | 91 | 1.00 | tr | |||||||||
| 91P01573 | 20-46 | Bt | S | 7.7 | 0.89 | 1 | 100* | 91 | 0.86 | tr | |||||||||
| 91P01574 | 46-76 | 2Bk | S | 7.9 | 0.63 | 5 | 100* | 100 | 1.01 | -- | |||||||||
| 91P01575 | 76-152 | 2C | S | 8.2 | 0.11 | 6 | 100* | 100 | 1.29 | -- | |||||||||
| Pedon Calculations | |||
| Calculation Name | Result | Units of Measure | |
| CEC Activity, CEC7/Clay, Weighted Average | 0.86 | (NA) | |
| Clay, carbonate free, Weighted Average | 25 | % wt | |
| Weighted Particles, 0.1-75mm, 75 mm Base | 38 | % wt | |
| Volume, >2mm, Weighted Average | 8 | % vol | |
| Clay, total, Weighted Average | 25 | % wt | |
| Weighted averages based on control section: 20-46 cm | |||