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Time Isn’t a Water Measurement: The reason most irrigations drift off target
by Bennett Fitzgibbon
Most irrigation systems still run on the same basic logic:
- Open the valve for 6 hours
- Assume the right amount of water moved
But time is not volume.
And fields aren’t static.
What changes set to set
Even when nothing “breaks,” flow changes constantly:
- pressure shifts across the day
- filters clog slightly
- pumps wear
- blocks behave differently
- leaks appear gradually
So “6 hours” today is not the same as “6 hours” last week.
Why this matters
A 10% miss doesn’t look obvious in the moment.
But across a season, small misses compound into:
- overwatering risk
- under-irrigation stress
- energy inefficiency
- unpredictable crop response
Operators compensate with buffers
That’s why experienced irrigators:
- run long “just in case”
- check blocks manually
- avoid running unattended
Not because they don’t trust themselves.
Because the system gives them no verification.
The shift
The future of irrigation isn’t just automation.
It’s outcome-based control:
- measure flow
- verify delivered volume
- stop when the target is met
That’s how irrigation becomes predictable.
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Lumo is built around verification, not just automation. Learn more by joining one of our upcoming irrigation workshops.