Digital Cameras Aid Research

Aerial surveys become a way of routinely checking areas burned by wildfires or invaded by pests or weeds, and digital imagery is a major part of the technique.

ARS scientists use a camera to detect near-infrared, green and blue light in a field of winter wheat in Beltsville, Maryland.
In a field of winter wheat in Beltsville, Maryland, ARS physical scientist Raymond Hunt (right) uses a camera that detects near-infrared, green, and blue light. Near-infrared and green light are needed to measure the “greenness” of vegetation and relate it to the crop’s nitrogen status. Dean Hively (left), a physical scientist with the U.S. Geological Survey at Beltsville, is measuring greenness with an “on-the-go” sensor available commercially.
courtesy Peggy Greb/ARS