Agriculture & Soil

Intermediate

Fertiliser Requirement

Fertiliser product needed to supply a target nutrient rate.

Formula

F = \frac{R \times A}{c}

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Variables

FFertiliser (kg)

RNutrient rate (kg/ha)

AArea (ha)

cNutrient content fraction

Example

Need 120 kg N/ha over 5 ha, urea 46% N: F ≈ 1304 kg

Did You Know?

Over-fertilising wastes money and pollutes waterways — precise rates protect both profit and environment.

agriculture fertiliser npk

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