Comparison of Aerial Application Droplet Size Measurements from Field and Wind Tunnel Studies
| Problem: | Droplet spectra data collected from various instruments in wind tunnel studies differ from the droplet size data collected from field deposition studies because of droplet evaporation and loss once the droplet is released from a spray nozzle. |
| Objective: | To compare droplet spectra data collected from wind tunnel studies with deposition data from a variety of string and card samples. |
| Approach: | Field trials will be conducted in College Station. The trials will use the Unit’s monofilament swath system, a WRK string system, water and oil sensitive cards, vertical strings, and rotor rods. The various sampling data collected will be compared to wind tunnel data already collected for ASAE reference nozzles. |
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Significant Impact: |
This will facilitate a greater understanding of droplet size data for future pesticide labels, spray application models, and various research studies. |
W. Clint Hoffmann