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Data from: Late-season corn stalk nitrate measurements across the US Midwest from 2006 to 2018

[ NOTE - Data files added 2023-03-07:
- Weather dataset - weather_onfant.csv
- Weather data dictionary - weather_data_dictionary.csv]

This dataset is based on field-guided corn stalk nitrate test surveys across the US Midwest from 2006 to 2018. In total, measurements from 10,675 corn fields were collected which represents 32,025 corn stalk nitrate measurements. Nitrogen form (commonly referred to as N source10) and the total N rate applied, US state, year of harvest, and climatic conditions are included for each site-year (trial location by growing season combination). When available, previous crop, manure source, tillage, and timing of N application are also included.

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FieldValue
Tags
corn stalk nitrate test
corn
nitrogen management
corn N status
Modified
2023-03-07
Release Date
2022-09-30
Identifier
39bdadf9-d847-493d-8e9f-d50140971a81
Spatial / Geographical Coverage Area
POLYGON ((-96.597290039062 43.511775336844, -91.235961914063 43.511775336844, -91.192016601563 43.3442228459, -91.049194335938 43.280271338388, -91.235961914063 43.088013114152, -91.049194335938 42.637056957277, -90.697631835938 42.645138625254, -90.390014648438 42.312929737972, -90.076904296875 41.810356437398, -90.357055664063 41.561072833015, -90.631713867188 41.487045905011, -91.016235351562 41.421173103791, -91.104125976562 41.264457170643, -91.005249023438 41.173554557275, -90.983276367188 40.908392573836, -91.115112304688 40.675500031522, -91.411743164063 40.575438966575, -91.356811523438 40.391604495228, -91.730346679688 40.625488237852, -95.784301757813 40.608809311107, -95.855712890625 41.102259263656, -96.009521484375 41.613525758688, -96.141357421875 42.088167671479, -96.361083984375 42.41345350278, -96.690673828125 42.785457186164, -96.470947265625 43.171265793274))
POLYGON ((-90.142822265625 40.386444289505, -90.142822265625 41.118814396275, -88.670654296875 41.118814396275, -88.670654296875 40.386444289505))
POLYGON ((-95.064697265625 44.799507842533, -95.064697265625 46.519311707738, -93.438720703125 46.519311707738, -93.438720703125 44.799507842533))
POLYGON ((-88.13232421875 37.83610776996, -88.00048828125 38.251410212729, -87.42919921875 38.869936876823, -87.51708984375 39.381301023744, -87.56103515625 41.816634115257, -85.93505859375 41.783874070548, -86.06689453125 42.273515173724, -85.10009765625 42.370990633475, -85.05615234375 41.783874070548, -84.70458984375 41.751097279113, -83.82568359375 41.619822689879, -83.16650390625 41.389447926843, -82.85888671875 40.926241564503, -83.34228515625 40.626738938602, -84.79248046875 40.660083674521, -84.88037109375 39.006663537017, -85.40771484375 38.698658044201, -85.67138671875 38.251410212729, -85.93505859375 38.044053442315, -86.33056640625 38.182356787725, -86.50634765625 37.83610776996, -86.72607421875 38.009436697631, -86.98974609375 37.76666186345))
Publisher
Ag Data Commons
Spatial / Geographical Coverage Location
Our dataset include field survey data collected in Iowa, Illinois, Indiana, Michigan, Ohio and Minnesota.
Temporal Coverage
January 1, 2006 to December 31, 2018
License
Creative Commons Attribution
Data Dictionary

https://data.nal.usda.gov/dataset/data-late-season-corn-stalk-nitrate-me...
Contact Name
Miguez, Fernando E.
Contact Email
femiguez@iastate.edu
Public Access Level
Public
Extended Metadata: 
FieldValue
Authors
Laurent, Anabelle (ORCID)
Cleveringa, Alex (ORCID)
Fey, Suzanne (ORCID)
Kyveryga, Peter (ORCID)
Wiese, Nathan
Lefebvre, Mark
Newville, Darren
Quinn, Daniel (ORCID)
McGuire, John
Haiying, Tao (ORCID)
Morris, Thomas F. (ORCID)
Miguez, Fernando E. (ORCID)
Peer Reviewed
No
Intended Use
This project generated data that can provide a comprehensive understanding of corn stalk nitrogen (N) status and nitrogen management in several Midwest states. Scientists, farmers and policymakers can gain insights into the impacts of N management and weather variables on corn N status.
Use Limitations
One of the caveats of the dataset is that crop management information is not consistently informed for all fields. Field management variables have been simplified to be able to combine data from different sources. Also, as yield data were not reported, the relationship between yield and corn stalk nitrate test category or between yield and nitrogen application rate cannot be explored. Out of 10,675 corn fields, 80 had a total N rate higher than 450 kg/ha (400 lb/ac). As most of them had manure as the main N form applied, we suspect that the value informed is too high because of the use of inappropriate manure book values (total N content in % per manure dry matter) rather than manure nutrient analysis.
Equipment or Software Used
R Studio
Funding Sources
National Institute of Food and Agriculture
1023765/2020-67021-32466
Related Articles

Anderson, C. J., & Kyveryga, P. M. (2016). Combining on-farm and climate data for risk management of nitrogen decisions. Climate Risk Management, 13, 10-18. https://doi.org/10.1016/j.crm.2016.03.002

Kyveryga, P. M., Blackmer, T. M., & Pearson, R. (2011). Normalization of uncalibrated late-season digital aerial imagery for evaluating corn nitrogen status. Precision Agriculture, 13(1), 2-16. https://doi.org/10.1007/s11119-011-9231-8

Kyveryga, P. M., Blackmer, T. M., Pearson, R., & Morris, T. F. (2011). Late-season digital aerial imagery and stalk nitrate testing to estimate the percentage of areas with different nitrogen status within fields. Journal of Soil and Water Conservation, 66(6), 373-385. https://doi.org/10.2489/jswc.66.6.373

Tao, H., Morris, T. F., Kyveryga, P., & McGuire, J. (2018). Factors Affecting Nitrogen Availability and Variability in Cornfields. Agronomy Journal, 110(5), 1974-1986. https://doi.org/10.2134/agronj2017.11.0631

Kyveryga, P. M., Tao, H., Morris, T. F., & Blackmer, T. M. (2010). Identification of Nitrogen Management Categories by Corn Stalk Nitrate Sampling Guided by Aerial Imagery. Agronomy Journal, 102(3), 858-867. https://doi.org/10.2134/agronj2009.0401
Dataset DOI (digital object identifier)
10.15482/USDA.ADC/1527976
Product Type
Dataset
FieldValue
OSTI Identifier
ISO Topic(s)
farming
State or Territory
Illinois
Indiana
Iowa
Michigan
Minnesota
Ohio
National Agricultural Library Thesaurus Term
corn stover
nitrogen content
nitrogen fertilizers
nutrient management
plant nitrogen content
corn
Ag Data Commons Keywords
  • Agroecosystems & Environment
  • Plant and animal
  • Agroecosystems & Environment
  • Plants & Crops
  • Crop production
  • Nutrient Management
  • Plants & Crops
  • Crop production
  • Plants & Crops

Suggested Citation:

(dataset) Laurent, Anabelle; Cleveringa, Alex; Fey, Suzanne; Kyveryga, Peter; Wiese, Nathan; Lefebvre, Mark; Newville, Darren; Quinn, Daniel; McGuire, John; Haiying, Tao; Morris, Thomas F.; Miguez, Fernando E. (2022). Data from: Late-season corn stalk nitrate measurements across the US Midwest from 2006 to 2018. Ag Data Commons. https://doi.org/10.15482/USDA.ADC/1527976. Accessed 2023-03-25.