Bradley Keith Fritz. 2. , Wesley Clint Hoffmann. 2. 1PoznaÅ University of Life Sciences, Institute of Biosystems Engineering. 2USDA ARS/Texas A&M University, ...
Problems with determination of spraying characteristics Zbigniew
1 Czaczyk ,
Bradley Keith
2 Fritz ,
Wesley Clint
2 Hoffmann
1Poznań
University of Life Sciences, Institute of Biosystems Engineering 2USDA ARS/Texas A&M University, Aerawide Pest Management Research Unit, College Station, USA
Introduction Adjustment of sprayers and technical parameters in plant protection needs higher significance in improving the efficiency and safety of the pesticides use. In many printed materials about integrated crop protection the importancy of technical spray parameters is ignored. One cause of such situation are deficiency of reliable and detailed technical data about these nozzles, and lack of standards/methods how to establish these needed parameters. In the subsequent work many years ago Professor P.C.H. Miller concluded that: “There is a need to establish ways of including such systems in spray classification approaches so that the balance between drift control and potential efficiency can be managed. Information relating to such management approaches is likely to be delivered by a range of established methods and new approaches to decision support and machine control.” (Miller & Tuck 2005). Optimization of drop-size characteristics to individual situation and need during application, first of all can be argument to realize an intention of the Directive 2009/128/EC (2009), according obligation of EC (28) member countries to increase safety of pesticide application, and decrease of its use.
Laser beam
Aim of this work was to highlight on growing problematic situation of sprayer operator and advisor in plant protection 1100 6515 [XC/UC] 1000
Fig. 1. View of drop-size measuring set, with a Laser light diffraction method, at USDA: Areawide Pest Management Research Unit, College Station, TX, USA (source: Zb. Czaczyk)
6510 [VC/XC] 8008 [C/VC]
900
11006 [M/C]
90
11003 [F/M] 800
GAT 03 @600 kPa [M]
80
4,0
Albuz AXI 11005, 140 kPa (M) (non air induction)
Albuz AXI 11005, 140 kPa (M) (non air induction)
GAT 03 @300 kPa [C/VC?]
700
Lechler IDKN 12004, 450 kPa (VC) (air induction)
Lechler IDKN 12004, 450 kPa (VC) (air induction)
70
GAT 03 @120 kPa [EC/UC?]
600
3,0
60
D
%vol.
50
2,0
40
500
(µm)
%vol.
400 30 300 20
1,0 200
10
100
0
0,0 0,5
DV101
1,5
D2V50
2,5
D3V90
3,5
Fig. 2. Spray characteristics of an example nozzle in pressure range of 120-600 kPa
