Does using an unmanned aerial vehicle (UAV) make sense for your crop operation? UAVs, also called drones or unmanned aerial systems, are available as fixed-wing types, like little airplanes, or rotor types, like little helicopters. They are catching the attention of Prairie crop growers and specialists who want to see how well they work for crop scouting and field mapping, and how the costs compare to the benefits. In Alberta, a project is underway to evaluate the use of UAVs to generate field maps to help in making decisions on weed and disease management. Dr. Chris Neeser, a weed research scientist with Alberta Agriculture and Rural Development (AARD), is leading the project. He wants to develop a set of procedures for acquiring and processing high-resolution UAV imagery and to assess the usefulness and economics of this tool. To map a field, the UAV flies over the field in parallel passes and takes photos at regular intervals. Imagery software is then used to stitch all the photos together to create a map of the whole field.