{
  "schemaVersion": 1,
  "fuels": {
    "offroad": {
      "name": "Farm diesel",
      "source": "USDA · Illinois",
      "color": "#087f97"
    },
    "road": {
      "name": "Road diesel",
      "source": "EIA · Midwest",
      "color": "#315f82"
    },
    "propane": {
      "name": "Propane",
      "source": "USDA · Iowa",
      "color": "#b77d32"
    }
  },
  "systems": {
    "conventional": {
      "name": "Conventional",
      "description": "Chisel + field cultivator",
      "short": "Two tillage passes"
    },
    "reduced": {
      "name": "Reduced tillage",
      "description": "One vertical tillage pass",
      "short": "One tillage pass"
    },
    "notill": {
      "name": "No-till",
      "description": "Plant into existing residue",
      "short": "No tillage passes"
    }
  },
  "operations": {
    "chisel": {
      "name": "Chisel plow",
      "rate": 1,
      "source": null,
      "note": "Project default: 1.00 gal/acre, as requested. Editable."
    },
    "cultivate": {
      "name": "Field cultivator",
      "rate": 0.5,
      "source": "https://farmdoc.illinois.edu/assets/management/machinery-costs/field_operations_2025.pdf",
      "note": "farmdoc 2025, Table 1: 0.50 gal/acre."
    },
    "vertical": {
      "name": "Vertical tillage",
      "rate": 0.5,
      "source": "https://farmdoc.illinois.edu/assets/management/machinery-costs/field_operations_2025.pdf",
      "note": "farmdoc 2025: vertical tillage with rolling basket, 0.50 gal/acre."
    },
    "strip": {
      "name": "Strip tillage",
      "rate": 0.9,
      "source": "https://farmdoc.illinois.edu/assets/management/machinery-costs/field_operations_2025.pdf",
      "note": "farmdoc 2025: strips only, 0.90 gal/acre. Add fertilizer separately only when it needs another trip."
    },
    "ripper": {
      "name": "Combination ripper",
      "rate": 2.1,
      "source": "https://farmdoc.illinois.edu/assets/management/machinery-costs/field_operations_2025.pdf",
      "note": "farmdoc 2025, Table 1: 2.10 gal/acre."
    },
    "plant": {
      "name": "Conventional planting",
      "rate": 0.4,
      "source": "https://farmdoc.illinois.edu/assets/management/machinery-costs/field_operations_2025.pdf",
      "note": "farmdoc 2025: conventional planter, 0.40 gal/acre."
    },
    "plantNotill": {
      "name": "No-till planting",
      "rate": 0.5,
      "source": "https://farmdoc.illinois.edu/assets/management/machinery-costs/field_operations_2025.pdf",
      "note": "farmdoc 2025: no-till planter, 0.50 gal/acre."
    },
    "spray": {
      "name": "Spraying",
      "rate": 0.08,
      "source": "https://www.extension.iastate.edu/agdm/crops/pdf/a3-27.pdf",
      "note": "Iowa State A3-27, revised 2026: self-propelled sprayer, 0.08 gal/acre per pass. Avoids farmdoc’s rounded 0.0."
    },
    "dryFertilizer": {
      "name": "Dry fertilizer spreading",
      "rate": 0.15,
      "source": "https://www.extension.iastate.edu/agdm/crops/pdf/a3-27.pdf",
      "note": "Iowa State A3-27: bulk-cart dry fertilizer spreading, 0.15 gal/acre."
    },
    "anhydrous": {
      "name": "Pre-plant anhydrous",
      "rate": 0.5,
      "source": "https://farmdoc.illinois.edu/assets/management/machinery-costs/field_operations_2025.pdf",
      "note": "Application fuel only. farmdoc 2025: 0.50 gal/acre. Fertilizer purchase cost is excluded."
    },
    "liquidN": {
      "name": "Liquid nitrogen application",
      "rate": 0.3,
      "source": "https://farmdoc.illinois.edu/assets/management/machinery-costs/field_operations_2025.pdf",
      "note": "farmdoc 2025: liquid fertilizer applicator, 0.30 gal/acre. Use instead of anhydrous when appropriate."
    },
    "combineCorn": {
      "name": "Combining corn",
      "rate": 1.15,
      "source": null,
      "note": "Project default: 1.15 gal/acre, as requested. Editable."
    },
    "combineSoy": {
      "name": "Combining soybeans",
      "rate": 1,
      "source": null,
      "note": "Project default: 1.00 gal/acre, as requested. Editable."
    },
    "cartCorn": {
      "name": "Grain cart · corn",
      "rate": 0.8484848484848485,
      "source": "https://farmdoc.illinois.edu/assets/management/machinery-costs/harvest_operations_2025.pdf",
      "note": "farmdoc 2025, 1,000-bushel cart: $2.80 fuel & lube ÷ $3.30. About 0.85 gal/acre."
    },
    "cartSoy": {
      "name": "Grain cart · soybeans",
      "rate": 0.33333333333333337,
      "source": "https://farmdoc.illinois.edu/assets/management/machinery-costs/harvest_operations_2025.pdf",
      "note": "farmdoc 2025, 1,000-bushel cart: $1.10 fuel & lube ÷ $3.30. About 0.33 gal/acre."
    },
    "custom": {
      "name": "Custom activity",
      "rate": 0,
      "source": null,
      "note": "Your own activity and measured or estimated fuel use."
    }
  }
}