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Sentera NDVI Crop Health Maps Show Field Contrast and Progression

Sentera has released NDVI Toolbox for AgVault. This set of tools allows users to customize normalized difference vegetation index (NDVI) data for greater insight into field and crop health. Users can recolor, dynamically regenerate, and highlight areas of an NDVI Crop Health Map on data gathered not only today but also on historical data.

“Until now, you needed to choose between viewing data tailored for NDVI progression over time, or tailored for NDVI contrast around a single flight, but you couldn’t do both,” says Greg Emerick, executive vice president for Sentera. “We changed that. Now, growers and agronomists have that flexibility. They are more in control of their operations and can make even better decisions, even faster.”

Why it matters

NDVI essentially compares one area to another through color variations. For example, if a crop is generally healthy, it appears bright green on an NDVI map. This is generalized data, however, and is only useful in general terms. According to Sentera, its Toolbox makes that data actionable by building flexibility into the color map. Instead of blanketing an NDVI map with low variation of a single color, the NDVI Toolbox allows you to force dramatic color variations to show a plant’s health relative to others in the field at a granular level. 

Fly once, and you can zoom in on areas of concern in AgVault, and assign a wider variation in color value for easier analysis. The average person can identify areas of stress, compaction, or drown-outs. Fly multiple times, and see problem areas as they emerge. Persistent problem areas can be investigated and remedied effectively. Users can even refer back to previous flights to see when issues emerged or reanalyze data from the past in different ways.

“Every time you fly an NDVI sensor and collect data, AgVault catalogs the data and the NDVI Toolbox becomes more robust, offering more accurate data,” says Reid Plumbo, director of product management for Sentera. “It just gets better and better,” he says.

There are two viewing options available in AgVault’s NDVI Toolbox.

Day to Day. Growers can monitor and compare a field over time, highlighting daily changes. This feature ensures that growers can pinpoint areas that are flourishing as well as ones that become stressed over time. He can then take action if necessary. Multiple data sets build on one another.

Acre to Acre. This feature allows growers to determine the overall vigor of a field, identify problems, and take action. This is all completed with a single data set.

The NDVI Toolbox is now a standard feature of Sentera’s AgVault Software Pro and Viewer licenses. To learn more about Sentera’s NDVI Toolbox, visit

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