Effect of sprayer parameters and wind speed on spray retention and soil deposits of pesticides: Case of artichoke cultivar

Irrational use of chemical method for crop protection, presents increasingly serious risks for human health and the environment. Droplet size and meteorological parameters are key factors to both environmental contamination and pest control efficacy. The objective of this study is to assess the impa...

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Veröffentlicht in:Plant protection science 2021-01, Vol.57 (4), p.333-343
Hauptverfasser: Bahrouni, Hassouna, Chaabane, Hanene, Marzougui, Nidhal, Ben Meriem, Sana, Bchini, Houcine, Abdallah, Mohamed Ali Ben
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container_issue 4
container_start_page 333
container_title Plant protection science
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creator Bahrouni, Hassouna
Chaabane, Hanene
Marzougui, Nidhal
Ben Meriem, Sana
Bchini, Houcine
Abdallah, Mohamed Ali Ben
description Irrational use of chemical method for crop protection, presents increasingly serious risks for human health and the environment. Droplet size and meteorological parameters are key factors to both environmental contamination and pest control efficacy. The objective of this study is to assess the impact of the nozzle use parameters, the operating pressure and the wind speed on droplet foliage deposition (retention) and soil deposition (losses), when treating artichoke. Several combinations were tested in a wind tunnel and in the field, under Mediterranean microclimatic conditions, using a fluorescent dye as a substitute for pesticide. Multiple regression models were built from tunnel data to predict foliage deposition and soil deposits, with determination coefficients of 0.96. Thus, models are able to simulate pesticide deposition on artichoke leaves and soil deposition, depending on sprayer parameters and wind speed. Foliage deposition and soil deposits rates ranged from 30 to 52% and 26 to 57% respectively for anti-drift nozzle. For conventional nozzle, rates varied from 20 to 38% and 31 to 62%. To improve retention and reduce spray losses, it is recommended to choose a medium droplet size when using an anti-drift nozzle, in conjunction with medium nozzle size, medium pressure and reduced wind speed.
doi_str_mv 10.17221/29/2021-PPS
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Droplet size and meteorological parameters are key factors to both environmental contamination and pest control efficacy. The objective of this study is to assess the impact of the nozzle use parameters, the operating pressure and the wind speed on droplet foliage deposition (retention) and soil deposition (losses), when treating artichoke. Several combinations were tested in a wind tunnel and in the field, under Mediterranean microclimatic conditions, using a fluorescent dye as a substitute for pesticide. Multiple regression models were built from tunnel data to predict foliage deposition and soil deposits, with determination coefficients of 0.96. Thus, models are able to simulate pesticide deposition on artichoke leaves and soil deposition, depending on sprayer parameters and wind speed. Foliage deposition and soil deposits rates ranged from 30 to 52% and 26 to 57% respectively for anti-drift nozzle. For conventional nozzle, rates varied from 20 to 38% and 31 to 62%. To improve retention and reduce spray losses, it is recommended to choose a medium droplet size when using an anti-drift nozzle, in conjunction with medium nozzle size, medium pressure and reduced wind speed.</description><identifier>ISSN: 1212-2580</identifier><identifier>EISSN: 1805-9341</identifier><identifier>DOI: 10.17221/29/2021-PPS</identifier><language>eng</language><publisher>PRAGUE: Czech Academy Agricultural Sciences</publisher><subject>Agriculture ; Agronomy ; Artichokes ; Chemical pest control ; Contamination ; Cultivars ; Deposition ; Deposits ; Drift ; droplet size ; Droplets ; droplets deposition ; Fluorescent dyes ; Fluorescent indicators ; Foliage ; Health risks ; Leaves ; Life Sciences &amp; Biomedicine ; meteorological factors ; Meteorological parameters ; Multiple regression models ; nozzle size ; nozzle type ; Nozzles ; Pest control ; Pesticides ; Plant protection ; Plant Sciences ; pressure ; Regression analysis ; Retention ; Science &amp; Technology ; Soil contamination ; Soils ; Sprays ; Wind speed ; Wind tunnel testing ; Wind tunnels</subject><ispartof>Plant protection science, 2021-01, Vol.57 (4), p.333-343</ispartof><rights>2021. 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subjects Agriculture
Agronomy
Artichokes
Chemical pest control
Contamination
Cultivars
Deposition
Deposits
Drift
droplet size
Droplets
droplets deposition
Fluorescent dyes
Fluorescent indicators
Foliage
Health risks
Leaves
Life Sciences & Biomedicine
meteorological factors
Meteorological parameters
Multiple regression models
nozzle size
nozzle type
Nozzles
Pest control
Pesticides
Plant protection
Plant Sciences
pressure
Regression analysis
Retention
Science & Technology
Soil contamination
Soils
Sprays
Wind speed
Wind tunnel testing
Wind tunnels
title Effect of sprayer parameters and wind speed on spray retention and soil deposits of pesticides: Case of artichoke cultivar
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