Crop yield per hectare calculator
Calculate total crop yield in tonnes and kg, convert t/ha to kg/ar, and estimate gross harvest revenue. Free crop yield calculator for farmers and gardeners.
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Garden Irrigation Calculator — how much water to water your garden
How much water does your garden use and how long should the sprinkler run? This calculator computes water needed per watering session, monthly consumption and sprinkler runtime. The calculator covers four plant types: lawn (25 l/m²/week), vegetables (35 l/m²/week — highest demand), trees and shrubs (20 l/m²/week) and mixed garden (28 l/m²/week). Sprinkler runtime assumes an average flow of 10 l/min.
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How the garden irrigation calculator works
Formula: 1. Weekly water (l) = garden_area_m2 × weekly_demand_l_m2 - Lawn: 25 l/m²/week - Vegetables: 35 l/m²/week - Trees & shrubs: 20 l/m²/week - Mixed: 28 l/m²/week 2. Water per session (l) = weekly_water / frequency_per_week 3. Watering time (min) = water_per_session / 10 (l/min) 4. Monthly water (l) = weekly_water × 4
Example: lawn 200m², watered 3 times per week
Lawn 200 m², 3 waterings per week: weekly water = 200 × 25 = 5,000 l. Water per session = 5,000 / 3 ≈ 1,667 l. Runtime = 1,667 / 10 ≈ 167 min. Monthly: 5,000 × 4 = 20,000 l = 20 m³.
Frequently asked questions about garden irrigation
How much water does a garden need per week?
Weekly water demand: lawn 25 l/m², vegetables 35 l/m², trees and shrubs 20 l/m², mixed garden 28 l/m². During heat waves increase watering by 30–50%.
How often should I water my garden?
Lawn: 2–3 times per week, vegetables: 3–7 times (daily during hot spells), trees and shrubs: 1–2 times. Water in the morning or evening. Deep, infrequent watering is better than shallow and frequent.
How much does garden watering cost per month?
The calculator computes monthly as 4 × weekly demand. For a 200 m² lawn: 20,000 l/month = 20 m³. At a water price of PLN 5–10/m³, that is PLN 100–200/month.
How many minutes to water the garden with a sprinkler?
The calculator uses 10 l/min flow rate. For 1,000 l: 100 minutes. Garden hoses flow 20–30 l/min, drip systems 1–4 l/hr per emitter. Drip irrigation takes longer but uses 30–50% less water.
Which garden plants need the most water?
Highest demand vegetables: tomatoes, cucumbers, courgettes, peppers (35 l/m²/week+). Moderate: carrots, beetroot. Low demand: garlic, onion.
How to install an automatic garden irrigation system?
Three popular systems: 1) Rotary sprinklers (lawn PLN 200–500/zone), 2) Drip irrigation (vegetables PLN 3–8/m), 3) Underground irrigation (premium PLN 20–50/m²). An automatic controller costs PLN 150–500 and saves 25–40% water.
How to check if the garden is getting enough water?
Too little: wilting leaves in the morning, brown tips, dry soil 5 cm deep, yellowing lawn. Too much: lower leaf yellowing, rotting smell, mould. Test: push finger 3 cm into soil — it should be moist but not waterlogged.
When is the best time to water a garden — morning or evening?
Best in the morning (6:00–10:00) — leaves dry before the heat, fewer fungal diseases. Evening watering is acceptable but leaves must dry before night. Always water at the base — not on leaves.
How to save water in the garden?
1) Mulching reduces evaporation by 50–70%, 2) Rainwater collection tanks 200–1,000 l (from PLN 200), 3) Drip irrigation (–30% water), 4) Soil moisture sensor, 5) Drought-resistant plant choices.
How much does a professional garden irrigation system cost?
Design + installation for a 200 m² garden: sprinklers PLN 2,000–6,000, drip system PLN 3,000–8,000. The system pays for itself through water savings (PLN 200–500/season) and time saved on manual watering.
The water demand values are averages for the Polish summer climate (May–August). Actual requirements depend on temperature, rainfall, soil type and sun exposure. Increase watering by 30–50% during heat waves.
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