Full TGIF Record # 333362
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Web URL(s):https://scisoc.confex.com/scisoc/2023am/meetingapp.cgi/Paper/149571
    Last checked: 11/29/2023
Publication Type:
Content Type:Abstract or Summary only
Author(s):Koo, Daewon; Godara, Navdeep; Ramon Romero, Juan; Roberson, Travis L.; Askew, Shawn D.
Author Affiliation:Koo: Presenting Author and Virginia Tech, Blacksburg, VA; Godara and Ramon Romero: Virginia Tech, Blacksburg, VA; Roberson: Plant Pathology, Physiology, and Weed Science, Virginia Tech, Midlothian, VA; Askew: Plant Pathology, Physiology, and Weed Science, Virginia Tech, Blacksburg, VA;
Title:Uniformity of pest control from large-scale, multi-pass spray drone application
Section:Turf pest management oral I (includes student competition)
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C05 turfgrass science
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Meeting Info.:St. Louis, Missouri: October 29-November 1, 2023
Source:ASA, CSSA, SSSA International Annual Meeting. 2023, p. 149571.
Publishing Information:[Madison, Wisconsin]: [American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America]
# of Pages:1
Abstract/Contents:"Uniform spray deposition is a key to achieve desirable outcomes from the broadcast pesticide application. Previous results suggested that single-pass spray drone application had more deposition variability and drift than ground application. However, spatial variability of multipass spray drone application and its effect on pest control has not been investigated. Field trials were conducted at Glade Road Research Facility, Blacksburg, VA to evaluate the smooth crabgrass (Digitaria ischaemum) control from quinclorac 841 g ai ha-1 and topramezone 36.8 g ai ha-1 applied by 3 passes of spray drone and 4 passes of ground sprayer devices. Plots were 9.1-m wide and 9.1-m long with 3-m buffer and 7.3-m wide and 7.3-m long with 0.3-m buffer for spray drone and ground application, respectively. Aerial images of each plot were taken by DJI Phantom 4 Pro imaging drone. Each image was overlaid with grids comprising a 9.3-dm2 resolution and weed infestation was calculated as the ratio of infested grid squares. Smooth crabgrass-infested areas in treated plots were converted to percentage control compared to the average of two 0.4-m2 untreated check plots in each treated plot. Spatial difference in weed infestation between transects along the center and edge of each sprayer pass and smooth crabgrass infestation in nontargeted border areas were also assessed. Data were subjected to ANOVA by SAS 9.4 PROC GLM procedure and means were separated by Fishers Protected LSD (a=0.05). The results indicated that topramezone applied by spray drone controlled smooth crabgrass 10% more than ground application at 28 DAT, however, it also had 24% more spatial variability than ground application. Smooth crabgrass control and its spatial variability was similar for quinclorac regardless of application methods. Spray from drone application drifted 19% more than that of ground application regardless of herbicide."
This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Koo, D., N. Godara, J. Ramon Romero, T. L. Roberson, and S. D. Askew. 2023. Uniformity of pest control from large-scale, multi-pass spray drone application. Agron. Abr. p. 149571.
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    Last checked: 11/29/2023
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