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– Inspection of sprayers in use – Part 1: Field crop sprayers. Friedrich, T. (2001). Agricultural sprayer standards and prospects for development of standards for other farm machinery. Agricultural Engineering International: the CIGR Journal of Scientific Research and Development. Vol. III. Huyghebaert, B., Mostade, O., Sawa, J. (2004). EU management of the plant protection pesticides. Teka-Commission Of Motorization And Power Industry In Agriculture , 4 , 15-21. Huyghebaert B. (2015). Verification of measurement methods of flat fan nozzles working parameters used in

Abstract

Agricultural nozzles usually produce a different drops size depending on the pressure and the physical condition (work life) of the nozzle besides producing a wide range of the drops spectrum in the spray cloud. In this paper the standard flat fan nozzles were investigated regarding the effect of the working pressure and the nozzle physical condition (new and worn nozzles). The size of drops and the spectrum of drops across the long axis of the spray pattern were examined by using Sympatec GmbH Laser Diffraction. Reducing the working pressure from 3 to 2 and then to 1 caused production of larger drops, also using worn nozzles (especially with lower pressure) changed the drops size which is expected to be produced from the new nozzles. The standard flat fan nozzles produced a wide range of the drops spectrum inside the spray cloud, generally small drops (less than 150 µm) concentrated in the middle of the spray pattern while the big drops (250-350µm) were situated on the edge positions (70 cm from the centerline) of the spray pattern.

measurement methods of flat fan nozzles working parameters used in agriculture, Ph.D Thesis, University of Life Sciences in Lublin, Poland. Klein, R.N., Kruger, G.R. and Golus, J.A. (2011). Evaluation of Soybean (Glycine max) Canopy Penetration with Several Nozzle Types and Pressures. INTECH Open Access Publisher. Knoche, M., Bukovac, M.J., Nakagawa, S. and Crabtree, G.D., (1998). Spray application factors and plant growth regulator performance: I. Bioassays and biological response. Pest Management Science, 54(2), pp.168-178. Matthews, G.A. (2008). Developments in

. Journal of Research and Applications in Agricultural Engineering,60 (1), 5-10. Langenakens, J., De Moor, A., Taylor, A., Cooper, S., Taylor, B. (2000). The effect of orifice wear on flat fan nozzle performance: using predictive and dynamic techniques to determine quality of liquid distribution. Asp. Appl. Biol. 57. Association of Applied Biologists , Warwick UK, 11. Langman, J., Pedryc, N. (2008). Diagnostyka rozpylaczy opryskiwacza polowego w czasie rzeczywistym. Inżynieria Rolnicza,10 (108), 167-173. Lardoux, Y., Sinfort, C., Enfalt, P., Sevila, F. (2007a). Test