| *** Taxonomy Characterization Data *** |
| Pedon ID: S2019TX219006 | ( Hockley, Texas ) | Print Date: Dec 6 2025 7:39AM |
| Sampled as on May 6, 2019: | Arvana ; Fine-loamy, mixed, superactive, thermic Petrocalcic Paleustalfs |
| Revised to : |
| United States Department of Agriculture | ||||
| SSL | - | Project | C2019USTX060 Investigating Benchmark Soils in the South | Natural Resources Conservation Service |
| - | Site ID | S2019TX219006 Lat: 33° 48' 15.00" north Long: 102° 13' 49.00" west MLRA: 77C | National Soil Survey Center | |
| - | Pedon No. | 19N0411 | Kellogg 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 | 3A1a1a | DbWR1 | ||||||||||
| 19N02738 | 0-13 | Ap | S | 14.6 | 7.0 | -- | 0.46 | 34 | 1.34 | 0.010 | 1 | 85 | |
| 19N02739 | 13-34 | Bt1 | S | 19.8 | 9.6 | 1.8 | 0.40 | 30 | 1.51 | 0.013 | 1 | 84 | |
| 19N02740 | 34-65 | Bt2 | S | 26.1 | 13.5 | 4.9 | 0.38 | 25 | 1.42 | 0.018 | 1 | 81 | |
| 19N02741 | 65-203 | 2Bkkmb | S | -- | -- | ||||||||
| 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 | ||||||
| 3A1a2a | |||||||||||||
| 19N02741 | 65-203 | 2Bkkmb | GP | 31.9 | |||||||||
| 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 | 4H2a | 4G4 | 4E1a1a1a1 | ||||||||||||||||
| 19N02738 | 0-13 | Ap | S | 8.2 | 1.37 | 0.07 | 0.02 | 1 | 100* | 0.88 | tr | ||||||||
| 19N02739 | 13-34 | Bt1 | S | 8.4 | 1.05 | 0.09 | 0.02 | 4 | 100* | 0.61 | tr | ||||||||
| 19N02740 | 34-65 | Bt2 | S | 8.4 | 1.64 | 0.11 | 0.02 | 8 | 100* | 0.55 | tr | ||||||||
| 19N02741 | 65-203 | 2Bkkmb | GP | 82 | |||||||||||||||
| Pedon Calculations | |||
| Calculation Name | Result | Units of Measure | |
| Weighted Particles, 0.1-75mm, 75 mm Base | 27 | % wt | |
| Volume, >2mm, Weighted Average | 1 | % vol | |
| Clay, total, set 2, Weighted Average | 23 | % wt | |
| Clay, carbonate free, set 2, Weighted Average | 20 | % wt | |
| CEC Activity, CEC7/Clay, Weighted Average, CECd, Set 7 | 0.57 | (NA) | |
| Weighted averages based on control section: 13-63 cm | |||