For each nutrient, the amount applied divided by the amount removed in harvested grain. It shows at a glance whether you are maintaining, building or mining each element in the soil — nitrogen and phosphorus are usually replaced, while potassium and sulfur are often quietly run down.
A sustainable nutrient budget replaces close to what grain removes — a replacement ratio near 1.0× per element; ratios persistently below one draw down the soil bank and store up a future constraint.
GRDC GrowNotes ↗A ratio below one isn’t a problem this season — it’s a deferred one. Potassium mined year after year eventually shows up as a yield ceiling that fertiliser can’t quickly fix. Budgeting by element keeps a hidden constraint from ambushing you.
Silo pulls each of these from the sources the operation already uses, and keeps the figure current automatically.
Build a full nutrient budget per paddock, not just nitrogen and phosphorus.
Soil test to depth to catch potassium and sulfur decline early.
Replace maintenance nutrients on high-removal paddocks before yield suffers.
For each nutrient, the amount applied divided by the amount removed in harvested grain. It shows at a glance whether you are maintaining, building or mining each element in the soil — nitrogen and phosphorus are usually replaced, while potassium and sulfur are often quietly run down.
You need: Nutrient applied by element (kg/ha), Grain nutrient concentration (kg/t), Grain yield (t/ha). Silo pulls each of these from the sources the operation already uses and keeps the figure current automatically.
A sustainable nutrient budget replaces close to what grain removes — a replacement ratio near 1.0× per element; ratios persistently below one draw down the soil bank and store up a future constraint.
Build a full nutrient budget per paddock, not just nitrogen and phosphorus. Soil test to depth to catch potassium and sulfur decline early. Replace maintenance nutrients on high-removal paddocks before yield suffers.
Connect the software, spreadsheets and records you already keep, and Silo keeps every benchmark on this page current automatically.
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