Vertical and horizontal spray distribution of hollow cone nozzles in a wind tunnel: a preliminary study to mitigate spray drift in orchard applications
Distribution horizontale et verticale d'une buse à cône creux : une étude préliminaire pour étudier la réduction de dérive en vergers
Résumé
Hollow cone nozzles are still widely used in orchard spray applications because of their small droplet sizes, visible sound coverage without air assistance on early vegetation stages. However, drift mitigation issues along water courses, sensitive crops and public areas generally imply the use of larger droplets generated by air injection hollow cone nozzles [Polveche et al., 2011]. This preliminary study aims at better defining the correlation between spray distribution patterns [Tamagnone et al, 2011] and drift curves both measured in IRSTEA wind tunnel equipped with a 9 m long distribution test bench. Vertical and horizontal spray orientations were compared with wind velocities of 0-2-4 and 5 m.s-1.
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