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The influence of atomizer, pressure and formulation on the droplet spectra produced by high‐volume sprayers
Author(s) -
COMBELLACK J.H.,
MATTHEWS G.A.
Publication year - 1981
Publication title -
weed research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.693
H-Index - 74
eISSN - 1365-3180
pISSN - 0043-1737
DOI - 10.1111/j.1365-3180.1981.tb00099.x
Subject(s) - volume (thermodynamics) , chemistry , spectral line , analytical chemistry (journal) , high pressure , atmospheric pressure , mechanics , thermodynamics , chromatography , meteorology , physics , astronomy
Summary: Techniques of high‐volume spraying of weedy plants, have not changed greatly since their introduction in the late 19th century. improvements to the effieiency of the operation have been investigated, and the influence of atomizer type. pressure and formulation on the droplet spectra produced were assessed. The VMD (volume median diameter) decreased log linearly ( r 2 > 0.98 with all atomizers tested. whilst the volume of the small‐droplet component (< 107 μm) increased linearly ( r 2 ) with increasing pressure. A comparison of the droplet spectra produced by three fan and three swirl cone atomizers showed that the fan atomizers gave significantly higher VMD's and lower volumes of small droplets than cone atomizers under comparable operating conditions. The influence of type and concentration of’formulation on the droplet spectra was variable with both the fan and cone atomizers The atomizer and pressure had the greater influence on the droplet spectra. but the effects of formulalion must also be considered if improvements are to be obtained in high‐volume spraying