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United States Department of Agriculture

Agricultural Research Service

Research Project: BIOLOGICAL, MICROCLIMATE, AND TRANSPORT PROCESSES AFFECTING PEST CONTROL APPLICATION TECHNOLOGY

Location: Application Technology Research Unit

Title: Influence of travel speed on spray deposition uniformity from an air-assisted variable-rate sprayer

Authors
item Liu, Hui -
item Zhu, Heping
item Shen, Yue -
item Chen, Yu -
item Zondag, Randy -
item Ozkan, Erdal -

Submitted to: Symposium Proceedings
Publication Type: Proceedings
Publication Acceptance Date: August 10, 2013
Publication Date: August 20, 2013
Citation: Liu, H., Zhu, H., Shen, Y., Chen, Y., Zondag, R., Ozkan, E. 2013. Influence of travel speed on spray deposition uniformity from an air-assisted variable-rate sprayer. In: Proceedings of the American Society of Agricultural and Biological Engineers Annual Meeting, July 21-24, 2013, Kansas City, Missouri. ASABE Paper No. 131594610.http://dx.doi.org/10.13031/aim.20131594610.

Technical Abstract: A newly developed LiDAR-guided air-assisted variable-rate sprayer for nursery and orchard applications was tested at various travel speeds to compare its spray deposition and coverage uniformity with constant-rate applications. Spray samplers, including nylon screens and water-sensitive papers (WSP), were mounted inside tree canopies to measure spray deposits and coverage. Experiments were conducted with six different size tree species in commercial nurseries and travel speeds ranged from 3.2 to 8.0 km h-1. Test results showed that variable-rate sprayer was able to adjust spray outputs to match canopy structures and travel speeds. For the variable-rate application, there were no significant variations in spray deposits and coverage for each tree species among the travel speeds of 3.2, 5.6 and 8.0 km h-1. The variable-rate application had significantly lower variations in spray deposits within canopies of different size trees than the constant spray application.

Last Modified: 8/27/2014
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