Rainfall-record arithmetic
Create a simple local rainfall record and see the modelled difference from your own weekly water-need figure.
Verify local conditions, equipment, water rules, and crop requirements before acting.
The tracker subtracts the rainfall amount you enter from the weekly need you enter. It does not obtain rain data, measure effective rainfall, account for runoff, or determine field infiltration.
With 25 mm entered weekly need and 5 mm entered rainfall, the remaining depth in the model is 20 mm before any efficiency adjustment.
Open a related local planning calculation.
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Crop Yield CalculatorOpen a related local planning calculation.
No. Effective water depends on intensity, runoff, infiltration, soil, canopy, and many local factors outside this model.
No. It is a personal planning record based on your entries.
No. Rainfall, climate, and field information are values you enter and verify.
No. Your local calculation and exports remain in the browser.
Yes. CSV and PDF use the same displayed assumptions and output.
No. Use calibrated measurements and appropriate local guidance separately.
No. It provides basic planning arithmetic, not hydraulic, electrical, pressure, pipe, or equipment design.
No. Crop demand, rainfall distribution, soil, system performance, water supply, and conditions vary.
No. Confirm current local rules, allocations, source conditions, and operational requirements independently.
Check units, actual flow and pressure, system condition, field and crop observations, soil moisture, and applicable rules.