Images for Every Field
EVI satellite imagery is now accessible directly within FBN Maps and is included with FBN membership at no extra charge. Any member who has field boundaries draw in FBN will receive satellite images.
What's Great About EVI?
Satellite Images are most useful for helping farmers prioritize their scouting in-season. They are a useful tool to identify variations of growth within and between fields which can be indicative of problem areas.
With satellite images, farmers can spot potential problem areas to investigate during scouting. FBN Members have used satellite images to identify everything from weed pressure to a clogged irrigation nozzle.
So what is EVI? EVI stands for Enhanced Vegetative Index. By reading the light spectrums of crop images, EVI provides an indication of the stage of crop growth and health. It is similar to NDVI satellite images, but includes image improvements that are not included in NDVI.
- New images are loaded every 5 to 7 days
- Members can access images going back 12 months
- The imagery has a 10-meter resolution
What Kind of Images are Included?
We display three types of images. Absolute, Relative, and Raw.
The "Absolute" layer can be used to show how far along a crop is in its growth, to identify the variation of vegetative vigor within a field, and to compare a field’s vegetative growth against other fields on the operation.
The "Relative" layer takes the range of EVI values from the Absolute layer and effectively amplifies the variation across a green to red color scale. This layer is used to identify the variation of vegetative growth within a single field.
The "Raw" layer shows a raw image of the field on the date the image was taken. This layer can be used to identify clouds or shadows of clouds that might be showing up in the EVI layers.