Estimate the gross irrigation water an orchard must deliver after accounting for useful rainfall and system efficiency. Enter productive tree count, daily water need per tree, irrigation duration, effective rainfall offset, and application efficiency to see delivered gallons, net crop demand, and average daily volume.
The main result is the water volume that must leave the irrigation system, not merely the amount plants are expected to use.
Soil water storage, crop stage, canopy size, evapotranspiration, salinity leaching, and legal water restrictions may require a more detailed irrigation schedule.
For 500 trees needing 15 gal/day over 30 days, with rainfall meeting 20% of demand and 85% efficiency, net crop demand is 180,000 gal and gross delivery is about 211,765 gal.
Gross irrigation includes water that does not reach or remain in the active root zone.
It is the portion of rainfall that is stored in the crop root zone and reduces irrigation demand.
Only if their water demand is similar; otherwise calculate separate irrigation blocks.
Yes. Use liters per tree per day and interpret all volume results as liters.
No. It estimates period volume; event timing must reflect soil, weather, and system capacity.
| Input | Meaning | Unit |
|---|---|---|
| Productive trees | Trees included in this irrigation block. | trees |
| Water need per tree | Estimated crop demand before rainfall. | gal/day |
| Irrigation period | Length of the planning period. | days |
| Effective rainfall offset | Share of crop demand met by usable rainfall. | % |
| Application efficiency | Water reaching the root zone divided by water delivered. | % |