Agronomic Soil Chemistry — GLBRC Scale-up Experiment
Data in the KBS LTER core database may not be published without written permission of the lead investigator or project director Full terms of use
Soil samples are taken on a near annual basis (usually after harvest in the fall) for fertilizer recommendations and analysis of pH, lime index, phosphorus, potassium, calcium, magnesium, and cation exchange capacity by an analytical service lab (Michigan State University Soil and Plant Nutrient Laboratory through 2022). Ten surface cores (0-25 cm) are collected at each sampling station, composited by station, then sieved and air dried before sending out for analysis. Note that these samples may also be analyzed for soil moisture and inorganic N.
This datatable is part of the Soil Properties — KBS GLBRC Scale-up Experiment dataset.
Soil properties of fields at Lux Arbor Reserve (L1-L3) and Marshall Farm (M1-M4) planted to corn (L1, M1), switchgrass (L2, M3), and restored prairie (L3, M2) in 2010 after a 2009 no-till soybean crop in all fields to convert tilled corn-soybean-wheat rotations (AGR) at Lux Arbor and fields in the Conservation Reserve Program (CRP) at Marshall Farm to no-till bioenergy crops. One field at Marshall Farm (M4) remained as CRP brome grass to serve as a reference. Each field has 10 sampling stations (S1-S10) around which most soil sampling occurs.
Note
| Experiment: | GLBRC Scale-up Experiment |
| Data available from: | October 2008 to December 2019 |
| Dataset: | KBS146 |
| Datatable ID: | KBS078-015.19 |
| Repository link: | |
| Related Tables: | |
| Personnel: |
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| Last Updated | 2023-10-24 |
| Variate | Description | Units |
|---|---|---|
| sample date | date of sample collection | |
| site | experimental location | |
| treatment name | treatment description | |
| treatment | experimental treatment | |
| station | sampling location | |
| campaign | type of soil sampling | |
| ph | soil pH | |
| lime index | indicator of potential acidity | |
| p ppm | phosphorus concentration | mg/kg |
| k ppm | potassium concentration | mg/kg |
| ca ppm | calcium concentration | mg/kg |
| mg ppm | magnesium concentration | mg/kg |
| top depth | upper soil core depth | |
| bottom depth | lower soil core depth |
GLBRC data is not yet publicly available.
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| sample_date | site | treatment_name | treatment | station | campaign | ph | lime_index | p_ppm | k_ppm | ca_ppm | mg_ppm | top_depth | bottom_depth |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2022-11-29 | KBS Marshall Farms | CRP-Corn | M1 | S9 | surface sample | 6.7 | 90.0 | 88.0 | 600.0 | 125.0 | 0 | 25 | |
| 2022-11-29 | KBS Marshall Farms | CRP-Corn | M1 | S8 | surface sample | 6.6 | 26.0 | 139.0 | 750.0 | 135.0 | 0 | 25 | |
| 2022-11-29 | KBS Marshall Farms | CRP-Corn | M1 | S7 | surface sample | 6.8 | 26.0 | 112.0 | 700.0 | 125.0 | 0 | 25 | |
| 2022-11-29 | KBS Marshall Farms | CRP-Corn | M1 | S6 | surface sample | 6.5 | 34.0 | 124.0 | 750.0 | 115.0 | 0 | 25 | |
| 2022-11-29 | KBS Marshall Farms | CRP-Corn | M1 | S5 | surface sample | 6.7 | 19.0 | 129.0 | 700.0 | 155.0 | 0 | 25 |