Abbreviation for "Normalized Differenced Vegetation Index" or "Normalized Density Vegetation Index", (in German "normalized differentiated vegetation index"). The vegetation index used in agriculture is calculated on the basis of satellite image data. Vegetation indices are one of the primary sources for observing and analyzing the earth's surface. The NDVI is calculated based on the intensity of the reflected light in the red and near infrared spectral range, which is recorded by satellites. The index is based on the fact that healthy vegetation reflects relatively little radiation in the visible spectral range and relatively much in the subsequent near infrared range. In contrast, other surface materials such as soil, rocks, water surfaces or dead vegetation show no such distinctive difference.
in the viniculture can determine the vigor, the condition of the deciduous roof and also the fruit quality and derived accordingly necessary Deciduous care measures be performed. The optimal time for a measurement is veraison (Maturity onset). Usually there is depending on the soil type and the topography a very large fluctuation range in earnings, The different conditions of a large vineyard area are reflected in the division into blocks, sub-blocks and zones according to the NDVI measurement result. These will not become uniform, but within the framework of the precision viticulture managed individually.