ARS researcher Bill Kustas, a Research Hydrologist and Distinguished Senior Research Scientist at ARS’s Hydrology and Remote Sensing Laboratory in Beltsville, MD, is part of a collaborative team called GRAPEX.  The GRAPEX research program involves using satellites and even unoccupied aerial vehicles to identify vine water use and stress throughout a vineyard. Growers can use these data to determine if certain areas are getting too much, too little, or just the right amount of irrigated water.

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