Reference : Spray droplet impaction outcomes for different plant species and spray formulations
Scientific journals : Article
Life sciences : Agriculture & agronomy
http://hdl.handle.net/2268/211922
Spray droplet impaction outcomes for different plant species and spray formulations
English
Massinon, Mathieu mailto [Université de Liège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > Gestion durable des bio-agresseurs >]
De Cock, Nicolas mailto [Université de Liège > Ingénierie des biosystèmes (Biose) > Biosystems Dynamics and Exchanges >]
Forster, W. Alison mailto [Plant Protection Chemistry New Zealand > > > >]
Nairn, Justin J. mailto [Plant Protection Chemistry New Zealand > > > >]
McCue, Scott W. mailto [Queensland University of Technology > Science and Engineering Faculty > Mathematical Sciences, Applied and Computational Mathematics > >]
Zabkiewicz, Jerzy A. mailto [SciCon Scientific Consultants Ltd (New Zealand) > > > >]
Lebeau, Frédéric mailto [Université de Liège > Ingénierie des biosystèmes (Biose) > Biosystems Dynamics and Exchanges >]
3-May-2017
Crop Protection
Elsevier Science
99
65-75
Yes (verified by ORBi)
International
0261-2194
[en] Droplet impaction ; adjuvants ; wettability ; leaf surface roughness ; leaf surface chemistry ; adhesion ; bounce ; shatter ; pinning
[en] A track-sprayer combined with a high-speed camera were used to visualize and identify droplet impaction outcomes for three formulations (water, 0.1% LI 700® (lecithin, a mixture of soya oils, propionic acid and surfactants) in water and 0.1% Pulse® (non-ionic surfactant, trisiloxane ethoxylate) in water) on four plant species (bean (Vicia faba L.), avocado (Persea americana L.), barnyard grass (Echinochloa crus-galli L. P. Beauv.) and cabbage (Brassica oleracea L.)) selected to represent a wide range of leaf surface characters. Droplet sizes and velocities were measured by image analysis and a multiple hypothesis tracking algorithm. Impaction outcomes were categorized into adhesion, bounce, or shatter. The probability of each outcome was estimated from logistic regression models related to the dimensionless Weber number. This approach is in contrast to various deterministic threshold criteria for droplet bounce or shatter that have been used to model droplet impaction events on leaves. It also provides a simple visual and numerical presentation of the complexity of impaction processes, and the relative influence of leaf surface character versus formulation for droplets with different impaction energies.
Fonds de la Recherche Scientifique (Communauté française de Belgique) - F.R.S.-FNRS ; Subside fédéral pour la recherche
Researchers ; Professionals
http://hdl.handle.net/2268/211922
10.1016/j.cropro.2017.05.003

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