Water-balance planning arithmetic
Review a simple water-balance calculation from figures you verify for your field, rather than treating it as an irrigation prescription.
Verify field conditions, local guidance, and safety requirements before acting on any estimate.
The model subtracts entered rainfall from entered weekly water need, multiplies the remainder by area, and adjusts for entered system efficiency. It does not measure soil moisture, source capacity, distribution uniformity, crop stress, or restrictions.
For 25 mm weekly need, 5 mm rainfall, 200 m² area, and 80% efficiency, the model estimates 5,000 litres delivered for that week.
Open a separate local calculation with its own assumptions.
Planting Calendar CalculatorOpen a separate local calculation with its own assumptions.
Crop Yield CalculatorOpen a separate local calculation with its own assumptions.
Irrigation Water Need CalculatorOpen a separate local calculation with its own assumptions.
Farm Task PlannerOpen a separate local calculation with its own assumptions.
No. Timing and amount must be checked against current soil, crop, weather, system, and local water conditions.
No. Pump, pressure, line, and electrical design require verified equipment data and appropriate expertise.
No. Calculations, task entries, and exports remain in your browser.
Yes. CSV and PDF exports use the same visible values and model.
No. It does not connect to a weather service; rainfall, timing, and other conditions are inputs you verify.
No. Soil, variety, weather, pests, disease, equipment, water availability, and local practice can materially change outcomes.
No. It performs user-input arithmetic only and does not replace local agronomy, safety, or regulatory guidance.
No. Use a consistent unit system for all related dimensions, spacing, rates, and area values.
Check current field conditions, measurements, local guidance, label requirements, water availability, and your own records.
No. Treat it as a reviewable planning note, not a complete farm-management decision.