NDWI is an indicator that tells you how moist an area is by looking at satellite imagery. Without putting a single sensor in the ground, it reads the water status of plants and soil from above. ESTRON turns that information into irrigation decisions.

What is it good for?

A garden or landscape never holds the same amount of water everywhere. Some corners get more sun, while others dry out faster because of the slope. This is hard to spot with the naked eye, and by the time plants visibly suffer it is often too late.

This is exactly where NDWI helps. It builds a moisture map of your area from satellite imagery and shows you where the soil is drying out before the plants ever turn yellow.

What does it mean for you?

  • Spots dry areas early: areas going dry are detected before any visible damage appears on the plants.
  • Prevents wasted water: places that are already moist are not watered unnecessarily.
  • Sets watering priority: it tells you which area needs water more urgently.
  • No need to walk the site: it assesses large areas from above at a single glance.
Looking green doesn't always mean all is well. In the first days of water stress a plant can still look green, yet the water inside it has already begun to fall. NDWI catches this hidden dryness before it becomes visible from the outside, so you water on time rather than too late.

How does ESTRON use it?

ESTRON tracks your area's moisture status from space on a regular basis. By combining it with other on-site measurements, it works out how much water each zone needs and adjusts the irrigation schedule accordingly.

The result: plants are watered at the right time and in the right amount. No water is wasted, and no area is left thirsty. Without any effort on your part, the system maintains this balance for you.