| *** Taxonomy Characterization Data *** |
| Pedon ID: 87IA1770017 | ( Van Buren, Iowa ) | Print Date: Apr 24 2025 5:38PM |
| Sampled as on Sep 1, 1987: | Kniffin ; Fine, montmorillonitic, mesic Udollic Ochraqualf |
| Revised to correlated: | Clarinda ; Fine, smectitic, mesic Udollic Ochraqualfs |
| United States Department of Agriculture | ||||
| SSL | - | Project | RP87IA135 EROSION VAN BUREN COUNTY | Natural Resources Conservation Service |
| - | Site ID | S1987IA1770017 Lat: 40° 42' 42.00" north Long: 91° 56' 52.00" west MLRA: 109 | National Soil Survey Center | |
| - | Pedon No. | 87P0390 | 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 | ||||||||||||
| 87P02005 | 0-23 | Ap | S | 23.5 | 0.46 | 4 | -- | ||||||
| 87P02006 | 23-36 | E | S | 30.1 | 0.46 | 3 | -- | ||||||
| 87P02007 | 36-53 | Bt1 | S | 45.9 | 0.45 | 2 | -- | ||||||
| 87P02008 | 53-69 | Bt2 | S | 43.8 | 0.43 | 1 | -- | ||||||
| 87P02009 | 69-86 | Bt3 | S | 39.8 | 0.44 | 2 | -- | ||||||
| 87P02010 | 86-104 | Bt4 | S | 42.1 | 0.41 | 7 | -- | ||||||
| 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 | ||||||||||||||||||
| 87P02005 | 0-23 | Ap | S | 6.2 | 1.68 | ||||||||||||||
| 87P02006 | 23-36 | E | S | 5.5 | 1.03 | ||||||||||||||
| 87P02007 | 36-53 | Bt1 | S | 5.6 | 0.74 | ||||||||||||||
| 87P02008 | 53-69 | Bt2 | S | 5.9 | 0.41 | ||||||||||||||
| 87P02009 | 69-86 | Bt3 | S | 6.3 | 0.33 | ||||||||||||||
| 87P02010 | 86-104 | Bt4 | S | 6.8 | 0.18 | ||||||||||||||
| Pedon Calculations | |||
| Calculation Name | Result | Units of Measure | |
| Clay, carbonate free, Weighted Average | 43 | % wt | |
| Weighted Particles, 0.1-75mm, 75 mm Base | 2 | % wt | |
| Volume, >2mm, Weighted Average | 0 | % vol | |
| Clay, total, Weighted Average | 43 | % wt | |
| Weighted averages based on control section: 36-86 cm | |||