{
  "slug": "corn-silage-yield-estimate",
  "title": "Corn Silage Yield Estimator",
  "heading": "Corn Silage Yield Estimator",
  "category": "other",
  "url": "https://www.revenuelab.fyi/toolbox/corn-silage-yield-estimate",
  "summary": "Estimate tons of silage per acre from expected grain yield.",
  "description": "Silage yield is commonly estimated from expected grain yield using a rule-of-thumb ratio, since the whole plant (stalk, leaf, ear) scales roughly with grain production once you account for typical harvest moisture. This calculator applies the standard 1 ton of 65% moisture silage per 7-8 bushels of grain yield ratio, adjusts for your actual harvest moisture target, and converts to total tons for the field so you can plan storage capacity and match acres planted for silage against herd feed needs before chopping starts.",
  "formula": "Silage tons/acre ≈ grain yield (bu/acre) ÷ ratio × moisture adjustment; total tons = tons/acre × acres.",
  "dateModified": "2026-09-30",
  "run_url": "https://www.revenuelab.fyi/api/public/calc?tool=corn-silage-yield-estimate",
  "inputs": [
    {
      "id": "acres",
      "label": "Acres to chop",
      "kind": "number",
      "hint": null,
      "default": 150,
      "unit": null,
      "min": 1,
      "max": null
    },
    {
      "id": "grainYield",
      "label": "Expected grain-equivalent yield",
      "kind": "number",
      "hint": null,
      "default": 190,
      "unit": "bu/acre",
      "min": 50,
      "max": null
    },
    {
      "id": "ratio",
      "label": "Bushels per ton of silage (65% moisture)",
      "kind": "number",
      "hint": null,
      "default": 7.5,
      "unit": null,
      "min": 5,
      "max": 10
    },
    {
      "id": "targetMoisture",
      "label": "Target harvest moisture",
      "kind": "number",
      "hint": null,
      "default": 65,
      "unit": "%",
      "min": 55,
      "max": 72
    }
  ],
  "outputs": [
    {
      "id": "totalTons",
      "label": "Total silage tons (as harvested)",
      "format": "number",
      "hint": null,
      "primary": true
    },
    {
      "id": "tonsAcre",
      "label": "Tons per acre",
      "format": "decimal",
      "hint": null,
      "primary": false
    },
    {
      "id": "dmTonsAcre",
      "label": "Dry matter tons per acre",
      "format": "decimal",
      "hint": null,
      "primary": false
    }
  ],
  "worked_example": {
    "inputs": [
      "Acres to chop: 150",
      "Expected grain-equivalent yield: 190 bu/acre",
      "Bushels per ton of silage (65% moisture): 7.5",
      "Target harvest moisture: 65 %"
    ],
    "outputs": [
      "Total silage tons (as harvested): 3,800",
      "Tons per acre: 25.33",
      "Dry matter tons per acre: 8.87"
    ]
  },
  "how_to": {
    "title": "How to use this",
    "steps": [
      "Enter acres to chop.",
      "Enter expected grain-equivalent yield (bu/acre).",
      "Enter bushels per ton of silage (65% moisture).",
      "Enter target harvest moisture (%).",
      "Read your total silage tons (as harvested) on the right — it updates as you type.",
      "Hit Share to keep the scenario or send it to someone."
    ]
  },
  "scenarios": [
    {
      "name": "Conservative",
      "description": "Lower-end numbers — what if things land soft?",
      "values": {
        "acres": 90,
        "grainYield": 115,
        "ratio": 5,
        "targetMoisture": 55
      }
    },
    {
      "name": "Typical",
      "description": "Defaults — the most common real-world setup.",
      "values": {
        "acres": 150,
        "grainYield": 190,
        "ratio": 7.5,
        "targetMoisture": 65
      }
    },
    {
      "name": "Ambitious",
      "description": "Higher-end numbers — what if things really pop?",
      "values": {
        "acres": 240,
        "grainYield": 305,
        "ratio": 10,
        "targetMoisture": 72
      }
    }
  ],
  "limitations": [
    "Estimates assume standard, average conditions — local rules, pricing, and materials vary.",
    "Results are rounded for readability; add a buffer before ordering, booking, or committing.",
    "Double-check anything with a real cost attached against a local quote."
  ],
  "faq": [
    {
      "q": "Where does the 7-8 bushel per ton ratio come from?",
      "a": "It's a long-standing agronomic rule of thumb from land-grant extension research relating grain yield to whole-plant biomass at typical harvest moisture. It holds reasonably well across most modern hybrids, though stress-shortened crops (drought, hail) can shift the actual ratio since stalk-to-grain proportion changes."
    },
    {
      "q": "Why does harvest moisture change the tons per acre number?",
      "a": "Wetter silage weighs more per unit of dry matter because it's carrying more water weight, so chopping at 70% moisture versus 60% moisture produces more as-fed tons from the same actual plant material — but you're not getting more nutrition, just more water in the load."
    },
    {
      "q": "What if my corn crop is drought-stressed?",
      "a": "Drought-stressed corn often has a lower grain-to-stalk ratio, meaning it can yield more tons of silage per bushel of grain-equivalent than the standard ratio suggests, since a higher share of the plant's biomass stayed in the stalk rather than filling the ear."
    },
    {
      "q": "How do I use this for storage planning?",
      "a": "Multiply total tons by your expected shrink rate from the silage shrink loss calculator to know usable feed tons, then check that against your bunker, pile, or bag capacity before chopping starts so you're not scrambling for extra storage mid-harvest."
    }
  ],
  "related": [
    "https://www.revenuelab.fyi/toolbox/silage-shrink-loss",
    "https://www.revenuelab.fyi/toolbox/grain-drying-cost",
    "https://www.revenuelab.fyi/toolbox/dairy-feed-cost-per-cwt"
  ],
  "license": "CC-BY-4.0",
  "citation": "RevenueLab — Corn Silage Yield Estimator (https://www.revenuelab.fyi/toolbox/corn-silage-yield-estimate)"
}