{
  "@type": "dcat:Dataset",
  "accessLevel": "public",
  "accrualPeriodicity": "R/P1Y",
  "bureauCode": [
    "005:18"
  ],
  "contactPoint": {
    "fn": "Douglas-Mankin, Kyle",
    "hasEmail": "mailto:Kyle.Mankin@usda.gov"
  },
  "description": "<p dir=\"ltr\">We investigated drivers of sub-field spatial variability in yield for 3 crops (hard red winter wheat, <i>Triticum aestivum</i> L. variety Langin; corn, <i>Zea mays</i> L.; and proso millet, <i>Panicum milaceum</i> L.) usings this multi-year dataset from a dryland research farm in northeastern Colorado, USA. The dataset spanned 18 2.6-4.3 ha management units collected over 4 years (2019-2022). The data includes high resolution topographic data collected via real-time kinematic GPS, densely sampled soil texture and chemical properties, and meteorological data from an on-site weather station.</p>",
  "distribution": [
    {
      "@type": "dcat:Distribution",
      "downloadURL": "https://ndownloader.figshare.com/files/54132527",
      "format": "csv",
      "mediaType": "text/csv",
      "title": "Modeling_data.csv"
    },
    {
      "@type": "dcat:Distribution",
      "downloadURL": "https://ndownloader.figshare.com/files/54132539",
      "format": "csv",
      "mediaType": "text/csv",
      "title": "Data_dictionary.csv"
    },
    {
      "@type": "dcat:Distribution",
      "downloadURL": "https://ndownloader.figshare.com/files/54132677",
      "format": "tif",
      "mediaType": "image/tiff",
      "title": "Study_site_DEM.tif"
    }
  ],
  "identifier": "10.15482/USDA.ADC/28914434.v1",
  "keyword": [
    "dryland",
    "machine learning",
    "precision agriculture",
    "rainfed",
    "random forest",
    "spatial variability.",
    "topographic position index",
    "yield"
  ],
  "license": "https://creativecommons.org/publicdomain/zero/1.0/",
  "modified": "2025-11-21",
  "programCode": [
    "005:040"
  ],
  "publisher": {
    "@type": "org:Organization",
    "name": "Agricultural Research Service"
  },
  "spatial": "{\"type\": \"Polygon\", \"coordinates\": [[[-103.1482923836, 40.1494161291], [-103.1479314553, 40.1626982725], [-103.1199392655, 40.1622469882], [-103.120305641, 40.1489650556], [-103.1482923836, 40.1494161291]]]}",
  "temporal": "2019-01-01/2022-12-31",
  "title": "Data from: Topographic position index predicts within-field yield variation in a dryland cereal production system"
}