How to Scout for Grapevine Leafroll Disease More Accurately and Efficiently Than Ever

In a previous post we discussed how Grapevine Leafroll disease affects grapevines but to quickly recap, Grapevine Leafroll Disease is one of the most common and persistent grapevine diseases; it can have devastating impacts on a vineyard, delaying fruit maturity and dramatically reducing fruit quality, pigmentation, vine vigor, and yield. With no cure for Leafroll,…

Sunsetting over vineyard in Napa Valley, California

EVI vs NDVI: What’s the difference?

The wine industry has been using aerial imaging to measure vine vigor for decades. It is becoming more and more common for vineyard managers to use vigor maps to support their decision making in the field. These maps most often use the Normalized Difference Vegetation Index (NDVI) to measure vine vigor. NDVI has been the…

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