The University of Connecticut scanning elastic backscatter lidar wa used to measure the movement and dispersion of plumes of pesticide aerosols from 12 aerial applications at a forest-corn field edge. Vertical profiles of 3-D sonic anemometers to 40m above ground provided simultaneous turbulence information. Spray drift occurred always. The movement and plume characteristics of the spray matertial was primarily dependent on atmospheric stability. The forest edge effects are shown.