NDVI is a value that shows, from satellite imagery, how green and vigorous the plants in an area are. Healthy plants reflect sunlight in a particular way; satellites measure that reflection and NDVI turns it into a simple score. A high score points to vigorous, healthy cover, while a low score points to weak, drying or bare ground.

It reveals plant health

When a plant runs short of water, falls ill or weakens, its colour and reflection change. This change often appears in satellite imagery before it can be seen by eye. With NDVI you can catch trouble spots in your areas early.

How ESTRON uses it

ESTRON regularly tracks the NDVI values of your landscape areas. When it sees a sign of stress in a zone, it alerts you and adjusts irrigation accordingly. As a result:

  • You can act before the grass visibly yellows.
  • You direct water to the areas that genuinely need it, without wasting it.
  • You can monitor large areas from a single screen, without walking each one.

Tracking over time

The real strength of NDVI comes not from a single image but from the change over time. The greenness of an area follows a natural pattern through the seasons. An unexpected break in that pattern is the warning sign of a problem. ESTRON continuously watches this trend and catches the change before you notice it.

Practical note: NDVI shows early that there is a problem, but on its own it does not name the cause. Drought, disease or a nutrient shortage can all produce a similar signal. That is why ESTRON evaluates satellite data together with field data such as soil moisture and weather, to make a more accurate decision.