// multi-utility computation suite · offline · instant · precise
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sci.fertigation-NPK-solution Calculator
Calculates fertiliser concentrations for fertigation solutions from crop N:P:K requirements and fertiliser analysis (percent composition). 1 kg of 20:20:20 fertiliser contains 200 g each of N, P₂O₅, and K₂O — fertigation efficiency is 20–30% higher than broadcast application due to precise root-zone placement.
Inputs
N Kg Ha
Reference formula or conversion factor shown for context.
P Kg Ha
Reference formula or conversion factor shown for context.
K Kg Ha
Reference formula or conversion factor shown for context.
Water Vol M3 Ha
Three-dimensional space occupied (m³ or L). 1 m³ = 1,000 L.
Results
N concentration in water (mg/L)
The proportional relationship between two quantities.
P₂O₅ concentration (mg/L)
The proportional relationship between two quantities.
K₂O concentration (mg/L)
The proportional relationship between two quantities.
estimated EC contribution (dS/m)
The value at the specified point or condition.
solution EC threshold
Sample size or count used in the calculation.
NPK ratio
The proportional relationship between two quantities.