Drip Tape Calculator

Drip tape runs along The shorter side (recommended) The longer side Smart valve size Ø90 valve — 1 ha per valve, Ø90 zone header Ø110 valve — 1.5 ha per valve, Ø110 zone header Crop / growth stage (sets the irrigation cycle) Cotton — seedling (cycle 10–15 days) Cotton — squaring (bud) (cycle 7–10 days) Cotton — flowering / boll peak (cycle 5–7 days) Cotton — boll opening (cycle 8–10 days) Wheat — tillering to jointing (cycle 10–14 days) Wheat — jointing to heading (cycle 7–10 days) Wheat — grain filling (cycle 8–12 days) Maize — seedling (cycle 10–15 days) Maize — jointing to tasseling (cycle 8–10 days) Maize — filling to maturity (cycle 7–10 days) Potato — tuber initiation (cycle 3–5 days) Potato — tuber bulking (cycle 3–5 days) Vegetables / melons — whole season (cycle 5–8 days) Other crop — enter the cycle below Irrigation cycle: finish all zones within (days) Soil Not specified Sandy (cycle should not exceed 5 days) Clay (cycle up to 10 days) Irrigation quota per watering (m³/mu) Independent pumping unit size (ha, 0 = one system) Loraveda smart valve: flow of one outlet at 10 m (0.1 MPa) pressure drop (m³/h) Smart valve outlet used L outlet — side A first, then side B; each side = half of the zone (default) T outlet — both sides (total flow = 1.7 × one outlet) System working hours per day (h) Watering time per rotation group (h) — leave empty to calculate from the quota Maximum groups = working hours × cycle days ÷ watering time per group. The 18 h and 1 h are example values — set your own. Merge tiny edge zones (under 50% of a full zone) into the neighbouring zone — fewer valves; a merged zone stays within 1.5 ha (Ø90 valve) / 2 ha (Ø110 valve) Reference zone flow — Ø90 valve (m³/h, to be confirmed) Reference zone flow — Ø110 valve (m³/h, to be confirmed) Only used for the zone-flow check. These are reference values, not the valve's rated flow — replace them with the valve maker's flow data. System / pump flow (m³/h) Zones open at the same time = system flow ÷ flow of one zone (FAO Pressurized Irrigation Techniques, ch. 4). Enter the real pump flow; if empty, valve area stays unchanged and as many zones open at once as the crop cycle needs.