Agriculture, Soil, Fertilizer & Farm Operations worked example

Lime Application Rate at 99% effective lime and spread efficiency: a worked example

What does the result look like when effective lime and spread efficiency reaches 99%? The full calculation is worked below with real intermediate numbers. Use it when turning a soil test lime recommendation into tons to order or spread.

The inputs for this scenario

  • Treated field area: 60 acres (unchanged)
  • Soil-test lime recommendation: 2 tons / acre (unchanged)
  • Effective lime and spread efficiency: 99 % (raised for this scenario; the documented default is 90)

Working through the calculation

  • Applying the documented formula (Lime required = field area x lime recommendation / effective lime efficiency) to the inputs above produces each figure below.
  • At this operating point the engine returns 121 tons for lime required, the number this scenario is built around.
  • At this operating point the engine returns 120 tons for soil test lime tons.
  • At this operating point the engine returns 1.21 tons for efficiency adjustment.
  • At this operating point the engine returns 99 % for effective lime efficiency.

How this compares with the baseline

  • Against the tool's baseline example, where effective lime and spread efficiency sits at 90% and the headline result is 133 tons, this scenario comes in 9.09% below the baseline at 121 tons.
  • A figure at this level is achievable when effective lime and spread efficiency is genuinely sustained, not just peaked for a shift. It sizes total tonnage from a single recommendation and one efficiency figure; it does not vary rate across a field or account for lime that reacts over multiple seasons.

Results at a glance

  • Lime required: 121 tons (headline result)
  • Soil test lime tons: 120 tons
  • Efficiency adjustment: 1.21 tons
  • Effective lime efficiency: 99 %

Run it with your numbers

  • Every input above is editable in the live Lime Application Rate calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.