Full TGIF Record # 324893
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Web URL(s):https://scisoc.confex.com/scisoc/2022am/meetingapp.cgi/Paper/142485
    Last checked: 01/24/2023
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Publication Type:
Content Type:Abstract or Summary only
Author(s):Koo, Daewon; Askew, Shawn D.; Henderson, Caleb A.; Godara, Navdeep; Peppers, John; Goncalves, Clebson Gomes
Author Affiliation:Koo: Presenting Author and Virginia Tech; Askew, Henderson, Godara and Peppers: Virginia Tech; Goncalves: University of California
Title:Height and nozzle selection influence droplet vaporization from agricultural spray drones
Section:Turfgrass science oral I (includes student competition)
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C05 turfgrass science
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Meeting Info.:Baltimore, Maryland: November 6-9, 2022
Source:ASA, CSSA, SSSA International Annual Meeting. 2022, p. 142485.
Publishing Information:[Madison, Wisconsin]: [American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America]
# of Pages:1
Abstract/Contents:"Since pesticide labels do not currently specify use patterns for agricultural spray drones (ASD), commercial applicators are reliant on aerial application specifications that limit spray tip placement to no greater than 75% of the aircrafts rotor span. To improve efficiency and allow drones to span more than a few meters per pass, drone manufacturers equip drones with spray tips that generate fine droplets subject to dispersal by drone rotors. Our previous research showed that droplet deposition decreases up to 40% as drone height increases up to 10 m. Medical and pesticide sciences literature suggests these losses are due to droplet vaporization. Studies were conducted to further test this theory and examine potential drift reduction technologies to help conserve deposition. The trial was conducted at Virginia Tech in Blacksburg, VA, USA to examine the influence of spray tip (XR11001, XR11002, AIXR11001) and drift reduction agent (DRA) (BAS-638, BAS-639, IntactTM) on droplet vaporization. Twenty white craft papers (21.6 cm x 30.5 cm were affixed to a slanted wooden support at 0.5-m increments. Blazon blue colorant (Milliken, USA) and water (1:1) with or without DRAs were sprayed with a hand-held boom sprayer at 10-m above the ground simulating the flow rate of the ASD. Papers were scanned and analyzed with customized python codes to count and measure droplets, and colorant was extracted and analyzed with a spectrophotometer to quantify colorant deposition. As expected, colorant spots less than 150 ┬Ám decreased from 19 to 1 spot cm-2 as distance from a XR 11001 spray tip increased to 10 m. Larger spray tip orifices and DRA mixtures had no more than five >150 ┬Ám colorant spots cm-2 regardless of height. These data support our hypothesis regarding small-droplet vaporization. An issue with large-droplet dispersion that varied by treatment limited our ability to estimate deposition conservation."
This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Koo, D., S. D. Askew, C. A. Henderson, N. Godara, J. Peppers, and C. G. Goncalves. 2022. Height and nozzle selection influence droplet vaporization from agricultural spray drones. Agron. Abr. p. 142485.
Fastlink to access this record outside TGIF: https://tic.msu.edu/tgif/flink?recno=324893
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    Last checked: 01/24/2023
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