Data from: Measured and simulated carbon dynamics in Midwestern US corn-soybean rotations

Metadata Updated: February 4, 2022

The dataset includes information on soil properties collected from two conventionally managed fields under corn-soybean rotation in October 2005 and October 2016, respectively. The fields are located in Story County, Central Iowa. 42 sampling locations per field and year were sampled within a 50 m × 50 m grid, and 1 to 2 samples per location were collected using a hydraulic soil sampler (d= 38.2 mm) from the 0 - 120 cm soil layer. The samples were analyzed to determine carbon and nitrogen concentration, and soil pH in five soil layers (0-15, 15-30, 30-60, 60-90, and 90-120 cm). Presented is the raw data per location (mean of duplicates) with which carbon and nitrogen content can be calculated with either the equivalent soil mass method or by using bulk density.

Access & Use Information

Public: This dataset is intended for public access and use. License: Creative Commons CCZero

Downloads & Resources

Comma Separated Values FileCSV
data-dictionary_CD.csv
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MS Excel FileEXCEL
Soil%20Chemical%20Analysis.xlsx

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Dates

Metadata Created Date	November 10, 2020
Metadata Updated Date	February 4, 2022

Metadata Source

Data.json Data.json Metadata
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Harvested from USDA JSON

Additional Metadata

Resource Type	Dataset
Metadata Created Date	November 10, 2020
Metadata Updated Date	February 4, 2022
Publisher	Agricultural Research Service
Maintainer	Sauer, Tom; Dold, Christian
Identifier	c1a3d175-2559-416d-9ef3-44d1b9521233
Data Last Modified	2020-11-30
Public Access Level	public
Bureau Code	005:18
Metadata Context	https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
Schema Version	https://project-open-data.cio.gov/v1.1/schema
Catalog Describedby	https://project-open-data.cio.gov/v1.1/schema/catalog.json
Data Dictionary	https://data.nal.usda.gov/dataset/data-measured-and-simulated-carbon-dynamics-midwestern-us-corn-soybean-rotations/resource/d38ee283-3e02-4a6c-b88d-cd7115dd6349
Harvest Object Id	57ef0263-51ff-48e0-8205-8801b893530c
Harvest Source Id	d3fafa34-0cb9-48f1-ab1d-5b5fdc783806
Harvest Source Title	USDA JSON
License	https://creativecommons.org/publicdomain/zero/1.0/
Old Spatial	{"type":"MultiPoint","coordinates":-93.6906,41.9749,-93.6937,41.9745}
Program Code	005:040
Source Datajson Identifier	True
Source Hash	03d685a2e3225714ed5f77342d7d7885116fc80a
Source Schema Version	1.1
Spatial	{"type":"MultiPoint","coordinates":-93.6906,41.9749,-93.6937,41.9745}

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