Nutrient Use Efficiency Calculator

NUE from crop uptake, applied nutrients, and yield.

Fertilized yield (bu/acre)

Unfertilized yield (bu/acre)

N applied (lbs/acre)

Grain N content (%)

Stover N content (%)

Harvest index

Test weight (lbs/bu)

Tab to move between fields

Agronomic Efficiency (bu/lb N)

0.5

Recovery Efficiency (%)

58.8%

Partial Factor Productivity (bu/lb N)1.13

Physiological Efficiency (lbs grain/lb N uptake)47.6

Internal Utilization (lbs grain/lb N uptake)47.6

Agronomic Efficiency (lbs grain/lb N)28

PFP (lbs grain/lb N)63

N uptake, fertilized (lbs/acre)211.7

N uptake, unfertilized (lbs/acre)117.6

Yield response (bu/acre)80

Return on N investment (%)309.1%

How to Use This Calculator

Enter Fertilized Yield (bu/acre) and Unfertilized Yield (bu/acre) from field trial data or check strips.
Set N Applied (lbs/acre), Grain N Content (%), Stover N Content (%), Harvest Index, and Grain Test Weight.
Review Agronomic Efficiency (bu/lb N) — target 0.3–0.5 bu/lb N for corn.
Check Recovery Efficiency (%) — the percentage of applied N actually taken up by the crop (good: 50–70%).
Use Partial Factor Productivity and Physiological Efficiency to benchmark your management versus regional averages.

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