Crop Water Use Guides
How much water each crop actually needs, straight from the FAO-56 standard: growth-stage coefficients (Kc), rooting depths, refill points for every soil type, and peak-season demand. These are the exact numbers RainRule schedules irrigation with.
Cereals
Legumes
Industrial & Fiber
Vegetables
- TomatoPeak Kc 1.15 · 145-day season
- PotatoPeak Kc 1.15 · 130-day season
- OnionPeak Kc 1.05 · 150-day season
- LettucePeak Kc 1 · 75-day season
- Cabbage / BroccoliPeak Kc 1.05 · 120-day season
- Pepper (Bell/Chili)Peak Kc 1.05 · 120-day season
- CarrotPeak Kc 1.05 · 120-day season
- CucumberPeak Kc 1 · 105-day season
- WatermelonPeak Kc 1 · 110-day season
Fruit & Perennials
Forage
Turn these numbers into a schedule
The free calculator combines any of these crops with your field's live 7-day forecast and tells you when to irrigate and how much to apply.