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The characteristics of agricultural sprays belong to the most critical factors affecting spray drift, deposition on plants, spray coverage and biological efficacy.  Hence, within the framework of a research project about agricultural spray drift, a measuring set-up for the characterisation of spray nozzles using a Phase Doppler Particle Analyser (PDPA) was developed.  This set-up is able to measure droplet sizes and velocities based on light-scattering principles.  It is composed of different parts i.e.: a climate room, a spray unit, a three-dimensional automated positioning system and an Aerometrics PDPA 1D system. 
  In total, 32 nozzle-pressure combinations have been tested.  From the results, the importance of the nozzle type and size on the droplet size and velocity spectra is clear.  In future, the results will be linked with the drift potential of different nozzle pressure combinations (based on field measurements) and used as an input for a Computational Fluid Dynamics spray drift model

Original languageEnglish
Title of host publicationInternational Advances in Pesticide Application
EditorsL S Alexander, S E Cooper, J Cross, C R Glass, B Magri, T H Robinson, D Stock, B Taylor, P Walklate, J van de Zande
Number of pages8
Place of PublicationWarwick, UK
PublisherAssociation of Applied Biologists
Publication date2006
Publication statusPublished - 2006
EventInternational Advances in Pesticide Application (2006) - Cambridge, United Kingdom
Duration: 10-Jan-200612-Jan-2006

ID: 241377