A comparison of initial spray characteristics produced by agricultural nozzles

Dorr, Gary J., Hewitt, Andrew J., Adkins, Steve W., Hanan, Jim, Zhang, Huichun and Noller, Barry (2013) A comparison of initial spray characteristics produced by agricultural nozzles. Crop Protection, 53 109-117. doi:10.1016/j.cropro.2013.06.017

Author Dorr, Gary J.
Hewitt, Andrew J.
Adkins, Steve W.
Hanan, Jim
Zhang, Huichun
Noller, Barry
Title A comparison of initial spray characteristics produced by agricultural nozzles
Journal name Crop Protection   Check publisher's open access policy
ISSN 0261-2194
Publication date 2013-11-01
Sub-type Article (original research)
DOI 10.1016/j.cropro.2013.06.017
Open Access Status Not yet assessed
Volume 53
Start page 109
End page 117
Total pages 9
Place of publication Amsterdam, Netherlands
Publisher Elsevier
Language eng
Subject 1102 Agronomy and Crop Science
Abstract Pesticides are commonly applied by using hydraulic nozzles to generate droplets. The properties of these spray droplets can influence the effectiveness and risks associated with the use of pesticides. Initial spray characteristics (initial droplet size and velocity, fan angle and spray liquid density) were therefore measured for a range of hydraulic nozzles and spray mixtures. Particle Image Velocimetry (PIV) was used to measure the spray sheet velocity.There was a significant difference between a standard hydraulic nozzle, Turbo TeeJet® and air induction nozzle for all measured spray characteristics. The standard hydraulic nozzle generated the smallest droplet sizes, the highest velocity and the highest spray liquid density. The air induction nozzle generated the largest droplet size, the slowest velocity and the lowest spray liquid density. The type of air induction nozzle and spray formulation was also found to influence spray characteristics.This work has demonstrated that initial spray characteristics such as droplet size and velocity, liquid density, fan angle and included air can vary depending on nozzle design, operating parameters and spray formulations. Initial droplet velocity was found to be significantly correlated to droplet size (Dv0.5) and spray pressure.
Keyword Spray
Spray application
Spray characteristics
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

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