
Free mini-course
Stop guessing when to irrigate
This short course turns soil moisture into something you can read at a glance and act on with confidence. It is built on the same FAO science that guides irrigation worldwide — explained in plain language, with tools you can play with. Six lessons take you from "which sensor do I buy?" to "the app says water 18 mm today."
6 free lessons · ~40 min total · no sign-up
What you'll learn
Work through the lessons in order, or jump to the one you need. Each takes a few minutes and ends with a tool you can try yourself.
Choosing a sensor
What to measure, how deep, how many — and what you can ignore.
Installation & first data
Get sensors in the ground correctly and read your first numbers.
Calibration & soil
Why the same number means different things — and why calibration matters.
Plant Available Water
One simple 0–100% number, plus the FAO safe range.
Dynamic thresholds
How growth stage and weather move the safe line every day.
Irrigation decisions
Turn readings into action: when to water and exactly how much.
6 free lessons · ~40 min total · no sign-up
Every number in this course follows FAO Irrigation and Drainage Paper 56 — the global reference for crop water needs and irrigation scheduling. We link the exact equation behind each tool so you can check our work.
Let SoilSense do the maths for you
You've seen the science. SoilSense runs it automatically in the background — converting raw sensor readings into a simple colour and a clear recommendation, every day, for every field.