期刊
SCIENCE OF THE TOTAL ENVIRONMENT
卷 692, 期 -, 页码 1322-1333出版社
ELSEVIER
DOI: 10.1016/j.scitotenv.2019.06.121
关键词
Pesticide; Spray; Drift; Drift potential; Droplet size; Nozzle classification
资金
- Secretaria d'Universitats i Recerca del Departament d'Empresa i Coneixement de la Generalitat de Catalunya
- Spanish Ministry of Economy and Competitiveness
- European Regional Development Fund (ERDF) [2017 SGR 646, AGL2007-66093-C04-03, AGL2010-22304-04-C03-03, AGL2013-48297-C2-2-R]
Spray drift is one of the main pollution sources identified when pesticides are sprayed on crops. In this work, in order to simplify the evaluation of hollow-cone nozzles according to their drift potential reduction, several models commonly used were tested by three indirect methods: phase Doppler particle analyser (PDPA) and two different wind tunnels. The main aim of this study is then to classify for the first time these hollow-cone nozzle models all of them used in tree crop spraying (3D crops). A comparison between these indirect methods to assess their suitability and to provide guidelines for a spray drift classification of hollow-cone nozzles was carried out. The results show that, in general terms, all methods allow hollow-cone nozzle classifications according to their drift potential reduction (DAR) with a similar trend. Among all the parameters determined with the PDPA, the V-100 parameter performed best in differentiating the tested nozzles among drift reduction classes. In the wind tunnel, similar values were obtained for both sedimenting and airborne drift depositions. The V-100 parameter displayed a high correlation (up to R-2 = 0.948) with the drift potential tested with the wind tunnel. It is concluded that in general, the evaluated indirect methods provide equivalent classification results. Additional studies with a greater variety of nozzle types are required to achieve a proposal of harmonized methodology for testing hollow-cone nozzles. (C) 2019 Elsevier B.V. All rights reserved.
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