Around Coimbra, most vineyards already irrigate — usually by drip. That means there's a lever to pull every time this number changes. grapestone tells you what your vines actually spent this week, so every irrigation decision is a response to real conditions, not a fixed routine.
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Because irrigation is common here, this number isn't just informative — it's actionable. Every time it moves, you have a real choice to make: turn the water on, hold off, or dial it back.
Getting that choice right means matching water to what the vine actually needs that week — enough to protect the crop, not so much that you dilute flavour, waste water, or invite rot in a damp autumn.
What this replaces
Instead of watering on a fixed weekly schedule regardless of weather, or waiting until vines visibly wilt to react, you get a running, plot-level picture of how much water has actually left the vineyard — updated as conditions change.
Matches irrigation to actual vine water use instead of a fixed calendar schedule, so you're never guessing.
Supports deliberate mild water stress for reds without tipping over into damage — the difference between concentration and stress damage.
Avoid the two expensive mistakes: watering vines that don't need it, and under-watering vines that do.
No sensors to install, no meteorology degree required.
Satellite imagery covers your vineyard automatically, day after day.
Translated into a straightforward evapotranspiration estimate for each plot.
A clear, weekly answer to "how much, and when" — in terms you can act on immediately.
We're rolling this out region by region, starting around Coimbra.
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