AGRIVI Farm Management Software has its standard product offering divided into product plans based on the feature set.
Additional offering to the FMS is the add-ons which can be activated from within of the account depending on your needs.
Vegetation Indices Add-on
For each field marked on a satellite map and assigned to crop production, you can analyze eight indices on a basis of every 2-3 days through map and chart overview - completely remotely.
NDVI (Normalized Difference Vegetation Index) – shows the vegetation health based on chlorophyll content in leaves, indicating the higher or lower crop biomass. NDVI values range from -1 to 1, so the higher NDVI, the healthier vegetation.
NDWI (Normalized Difference Water Index) – shows vegetation water content by measuring the changes in the leaf structure. This index is useful for drought monitoring.
NDRE (Normalized Difference Red Edge Index) – shows the vegetation health based on the chlorophyll content in leaves (how green a leaf appears), variability in leaf area, and soil background effects. Soil typically has the lowest values, unhealthy plants have intermediate values, and healthy plants have the highest values (higher levels of leaf chlorophyll content).
Besides leaf chlorophyll content indication, NDRE is used in mapping variability in fertilizer demand, Nitrogen uptake, stress and plant vigor detection.
CHI (Crop Health Index) – shows crop health based on the measured chlorophyll content in leaves.
SAVI (Soil Adjusted Vegetation Index) – shows plant health in the way to minimize the soil brightness and emphasize data from vegetation. For a given amount of vegetation, darker soil substrates result in higher vegetation index values. The soil adjusted vegetation index (SAVI) is used to suppress the soil effect.
SAVI tries to correct for bare soil areas in the field by reducing soil background effects. Therefore it is used in sparse vegetation canopies or early growing stages.
LAI (Leaf Area Index) - characterized the plant canopies. It is defined as half the total area of green elements of the canopy per unit ground area. The LAI quantifies the thickness of the vegetation cover. A leaf area index (LAI) expresses the leaf area per unit ground or trunk surface area of a plant and is commonly used as an indicator of the growth rate of a plant.
EVI (Enhanced Vegetation Index) - an 'optimized' vegetation index designed to enhance the vegetation signal with improved sensitivity in high biomass regions and improved vegetation monitoring through a de-coupling of the canopy background signal and a reduction in atmosphere influences.
Whereas the NDVI is chlorophyll sensitive, the EVI is more responsive to canopy structural variations, including leaf area index (LAI), canopy type, plant physiognomy, and canopy architecture. EVI is used in a combination with LAI to detect the vegetation changes and extract canopy biophysical parameters. Also, in the presence of snow, NDVI decreases, while EVI increases.
RGB (Red-Green-Blue) – shows crop vegetation by combining only three colors, red, green, blue (true color image). Using a process called interpolation, the camera computes the actual color of each pixel by combining the color it captured directly through its own filter with the other two colors captured by the pixels around it.
If you are considering the activation of Vegetation indices in your account, contact our sales team for more details on firstname.lastname@example.org!