Article (Scientific journals)
Droplet Size Spectra And Drift Effect Of Two Phenmedipham Formulations And Four Adjuvants Mixtures
Stainier, C.; Destain, Marie-France; Schiffers, Bruno et al.
2006In Crop Protection, 25 (12), p. 1238-1243
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Keywords :
drift; formulation; nozzle; droplet size; pesticides; adjuvant
Abstract :
[en] Relative drift potential was evaluated for three types of hydraulic nozzles (a flat-fan nozzle, a hollow cone nozzle and an air induction nozzle) spraying different liquids: water, emulsifiable concentrate (EC) and suspension concentrate (SC) formulations of phenmedipham dispersed in water, with or without addition of 4 different tank-mix adjuvants. The droplet size spectra were measured for these 15 spray mixtures using a Malvern Particle Sizer and characterised by the Volume Median Diameter (VMD) and the percentage of liquid contained in droplets less than 100 m (% < 100 m). Horizontal ground drift was measured in a wind tunnel, on glass fibre collectors using a fluorescent tracer dye technique. The relative drift of each spray mixture was characterised by the Drifted Part (DP) which is the part of the sprayed volume drifted between 2 and 6 metres. Although the nozzle type was the predominating parameter regarding to the droplet size spectra and the DP, differences were observed due to the liquids characteristics. The EC formulation produced a smaller droplet size and a greater DP than the SC formulation whatever the tank mix adjuvant used. For the different spray mixtures, the DP was poorly correlated to the VMD or the % < 100 m. However, correlations between the VMD, the % < 100 m and the DP of the flat-fan nozzle and of the hollow cone nozzle were significant. This suggests that a reference nozzle could be used to estimate the drift potential of other nozzle with a similar liquid sheet break-up mechanism.
Disciplines :
Agriculture & agronomy
Author, co-author :
Stainier, C.;  Université de Liège - ULiège > Gembloux Agro-Bio Tech > Unité de Mécanique et Construction
Destain, Marie-France ;  Université de Liège - ULiège > Gembloux Agro-Bio Tech
Schiffers, Bruno ;  Université de Liège - ULiège > Gembloux Agro-Bio Tech
Lebeau, Frédéric  ;  Université de Liège - ULiège > Gembloux Agro-Bio Tech
Language :
English
Title :
Droplet Size Spectra And Drift Effect Of Two Phenmedipham Formulations And Four Adjuvants Mixtures
Alternative titles :
[en] Effet de quatre adjuvants sur la granulmétrie et la dérive de bouillies pour deux formulations de Phenmediphamet
Publication date :
2006
Journal title :
Crop Protection
ISSN :
0261-2194
eISSN :
1873-6904
Publisher :
Elsevier
Volume :
25
Issue :
12
Pages :
1238-1243
Peer reviewed :
Peer Reviewed verified by ORBi
Name of the research project :
research project D31-1099
Funders :
Région wallonne. Ministère de l'Agriculture, de la Nature, de la Forêt, de la Ruralité, du Tourisme, du Patrimoine [BE]
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