In this study, calibrated NDVI values showed a strong correlation with the level of disease visually scouted by researchers in the field. In fact, the NDVI map was able to successfully indicate differences in barley yield between the treatments.
The Normalized Difference Vegetation Index (or NDVI) has been used for the past 40 years as the go-to method of assessing plant health. As you may know, healthy plants reflect light differently than unhealthy ones.
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