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Reduced span spray – Part 2: Drift
Ouled Taleb Salah, Sofiene; De Cock, Nicolas; Massinon, Mathieu et al.
2016In Aspect of Applied Biology, International Advances in Pesticide Application
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Keywords :
capillary jet,; spray drift; reduced span factor; free break up regime; forced break up
Abstract :
[en] Treatment efficiency is drastically affected by the amount of spray drift away the target area. The present study investigates the effect of a reduced span on spray drift based on wind tunnel measurements with the final aim of guiding the design of a reduced span nozzle (Reduced span spray – Part 3: Design of narrow span nozzle). A capillary jet with a free and a forced break up regimes, corresponding to 0.5 and 0.06 span values respectively, was tested under 2 m/s downwind speed. Droplets spots from the free break up regime show a bimodal distribution, which are related to droplets sizes: Bigger droplet travel less distance than smaller droplets. Droplet diameters measured on ground level at different distances from the generator were corroborated with the observed droplets spots. However, deposits from forced break up regime were similar to deposits obtained by the free break up regime, what may be due to emerged drops throughout the droplet stream. Much focus on the forced break up regime is needed to relate droplet size to spray drift.
Research center :
TERRA Teaching and Research Centre - TERRA
Disciplines :
Agriculture & agronomy
Author, co-author :
Ouled Taleb Salah, Sofiene ;  Université de Liège > Ingénierie des biosystèmes (Biose) > Biosystems Dynamics and Exchanges
De Cock, Nicolas ;  Université de Liège > Ingénierie des biosystèmes (Biose) > Biosystems Dynamics and Exchanges
Massinon, Mathieu ;  Université de Liège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > Gestion durable des bio-agresseurs
Lebeau, Frédéric  ;  Université de Liège > Ingénierie des biosystèmes (Biose) > Biosystems Dynamics and Exchanges
Language :
English
Title :
Reduced span spray – Part 2: Drift
Publication date :
January 2016
Event name :
International Advances in Pesticide Application 2016
Event organizer :
Association of Applied Biologists (AAB)
Event place :
Barcelone, Spain
Event date :
13 janvier 2016 au 15 janvier 2016
Main work title :
Aspect of Applied Biology, International Advances in Pesticide Application
Publisher :
Association of applied biologists, Wellesbourne, United Kingdom
Edition :
132
ISBN/EAN :
0265-1491
Pages :
6
Peer reviewed :
Peer reviewed
Name of the research project :
AXIS 3 – New tools to increase sustainability of Agro-ecosystem /Project 3E:Development of Controlled Droplet Application Technology
Available on ORBi :
since 01 June 2017

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