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Research Article

Assessment of Three Commercial Over-the-Row Sprayer Technologies in Eastern Washington Vineyards

Margaret L. McCoy, Gwen-Alyn Hoheisel, Lav R. Khot, Michelle M. Moyer
Am J Enol Vitic. July 2021 72: 217-229; published ahead of print March 01, 2021 ; DOI: 10.5344/ajev.2021.20058
Margaret L. McCoy
1Department of Horticulture, Washington State University, Irrigated Agriculture Research and Extension Center, 24106 North Bunn Rd, Prosser, WA 99350;
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Gwen-Alyn Hoheisel
2WSU Extension, Washington State University, 1121 Dudley Avenue, Prosser, WA 99350; and
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Lav R. Khot
3Department of Biological Systems Engineering, Washington State University, Irrigated Agriculture Research and Extension Center, 24106 North Bunn Rd, Prosser, WA 99350.
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Michelle M. Moyer
1Department of Horticulture, Washington State University, Irrigated Agriculture Research and Extension Center, 24106 North Bunn Rd, Prosser, WA 99350;
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  • For correspondence: michelle.moyer@wsu.edu
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Article Figures & Data

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    Figure 1

    Over-the-row commercial sprayers evaluated in this study in Washington state in 2016 and 2017. (A) VineTech Quantum Mist; (B) Blueline Gregoire SpeedFlow; and (C) On Target Spray Systems electrostatic.

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    Figure 2

    Field collectors and vineyard collection locations for sprayer evaluations in Washington State in 2016 and 2017. (A) Canopy deposition collection pole with five collection zones for Quantum Mist and Gregoire sprayers at Site 1; (B) Canopy deposition collection pole with four collection zones for On Target sprayer at Site 2; (C) aerial drift collection poles; and (D) ground drift collection block. Field trial configuration for (E) Site 1 and (F) Site 2 for 2016 and 2017 trials, showing in-canopy (opposed and unopposed rows), aerial drift, and ground drift collection points in the vineyard during data collection after tracer applications. Graphic art by Dr. Charlotte Oliver, Washington State University.

Tables

  • Figures
  • Table 1

    Operational parameters of three commercial over-the-row sprayer technologies used in Washington State field trials in 2016 and 2017. Day of year (DOY) from 1 Jan.

    Table 1
  • Table 2

    Additional operational parameters of three over-the-row commercial sprayer technologies used in Washington State field trials in 2016 and 2017.

    Table 2
  • Table 3

    Day of year (DOY), weather conditions, and vine-row-volume measurements for data collections during Quantum Mist assessment field trials in Washington State in 2016 and 2017.

    Table 3
  • Table 4

    Day of year (DOY), weather conditions, and vine-row-volume measurements for data collections during Gregoire assessment field trials in Washington State in 2016 and 2017.

    Table 4
  • Table 5

    Day of year (DOY), weather conditions, and vine-row-volume measurements for data collections during On Target assessment field trials in Washington State in 2016 and 2017.

    Table 5
  • Table 6

    Early-season canopy deposition, aerial drift, and ground drift for the Quantum Mist sprayer. Lowercase letters across rows indicate significant difference in means using Tukey’s honest significant difference at α = 0.05 across individual rows. WFZ: west fruit zone; EFZ: east fruit zone; WUPP: west upper canopy; MidUPP: middle upper canopy; and EUPP: east upper canopy.

    Table 6
  • Table 7

    Mid-season canopy deposition, aerial drift, and ground drift for the Quantum Mist sprayer. Lowercase letters across rows indicate significant difference in means using Tukey’s honest significant difference at α = 0.05. WFZ: west fruit zone; EFZ: east fruit zone; WUPP: west upper canopy; MidUPP: middle upper canopy; and EUPP: east upper canopy.

    Table 7
  • Table 8

    Early-season canopy deposition, aerial drift, and ground drift for the Gregoire sprayer. Lowercase letters across rows indicate significant difference in means using Tukey’s honest significant difference at α = 0.05. WFZ: west fruit zone; EFZ: east fruit zone; WUPP: west upper canopy; MidUPP: middle upper canopy; and EUPP: east upper canopy.

    Table 8
  • Table 9

    Mid-season canopy deposition, aerial drift, and ground drift for the Gregoire sprayer. Lowercase letters across rows indicate significant difference in means using Tukey’s honest significant difference at α = 0.05. WFZ: west fruit zone; EFZ: east fruit zone; WUPP: west upper canopy; MidUPP: middle upper canopy; and EUPP: east upper canopy.

    Table 9
  • Table 10

    Early-season canopy deposition, aerial drift, and ground drift for the On Target. Lowercase letters across rows indicate significant difference in means using Tukey’s honest significant difference at α = 0.05. WFZ: west fruit zone; EFZ: east fruit zone; WUPP: west upper canopy; and EUPP: east upper canopy.

    Table 10
  • Table 11

    Mid-season canopy deposition, aerial drift, and ground drift for the On Target sprayer. Lowercase letters across rows indicate significant difference in means using Tukey’s honest significant difference at α = 0.05. WFZ: west fruit zone; EFZ: east fruit zone; WUPP: west upper canopy; and EUPP: east upper canopy.

    Table 11
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Assessment of Three Commercial Over-the-Row Sprayer Technologies in Eastern Washington Vineyards
Margaret L. McCoy, Gwen-Alyn Hoheisel, Lav R. Khot, Michelle M. Moyer
Am J Enol Vitic.  July 2021  72: 217-229;  published ahead of print March 01, 2021 ; DOI: 10.5344/ajev.2021.20058

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Assessment of Three Commercial Over-the-Row Sprayer Technologies in Eastern Washington Vineyards
Margaret L. McCoy, Gwen-Alyn Hoheisel, Lav R. Khot, Michelle M. Moyer
Am J Enol Vitic.  July 2021  72: 217-229;  published ahead of print March 01, 2021 ; DOI: 10.5344/ajev.2021.20058
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