Evaluating spray drift from Uncrewed Aerial Spray Systems: A machine learning and variance-based sensitivity analysis of environmental and spray system parameters

被引:1
|
作者
Jerome, Goulet-Fortin [1 ]
He, Qianwen [1 ]
Francis, Donaldson [2 ]
Bernhard, Gottesbueren [3 ]
Wang, Guobin [4 ]
Lan, Yubin [4 ]
Gao, Beibei [5 ]
Jia, Gan Wei [5 ]
Nan, Jiang Ying [5 ]
Volker, Laabs [1 ]
机构
[1] BASF SE, Ludwigshafen, Germany
[2] BASF Corp, Res Triangle Pk, NC USA
[3] Make Sense Consulting, Limburgerhof, Germany
[4] Shandong Univ Technol, Zibo, Peoples R China
[5] BASF China Co Ltd, Shanghai, Peoples R China
关键词
Uncrewed Aerial Spray Systems; Drones; Spray drift; Sensitivity analysis; Machine learning; Random forest; MODEL;
D O I
10.1016/j.scitotenv.2024.173213
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Uncrewed Aerial Spray Systems (UASS), commonly called drones, have become an important application technique for plant protection products in Asia and worldwide. As such, environmental variables and spray system parameters influencing spray drift deserve detailed investigations. This study presents the data analysis of 114 UASS drift trials conducted between December 2021 and December 2022 in China. Study design was based on the ISO 22866:2005 protocol for spray drift trials and considered different UASS platforms, nozzles, and release heights, and specifically continuously measured weather conditions. The relative importance of the environmental variables and spray system parameters was evaluated by a random forest (RF) feature importance analysis, a Sobol sensitivity analysis and partial dependence plots. This approach was preferred to linear ranking techniques such as ANOVA (analysis of variance) due to the non-linearity of the system. In addition, partial dependence plots are proposed to visualize the relationship between specific input parameters within the system. Drift deposition curves calculated from the 114 trials show good agreement with previous UASS trials reported in the literature. As reported in previous studies, spray drift following UASS applications is lower than for manned aerial vehicles, greater than for ground spray applications, and similar to drift observed from orchard air blast applications. In addition, 9 trials were conducted on corn fields in order to evaluate the potential effect of crop cover on spray drift. Spray drift was observed to be reduced over the cropped soil, suggesting that plant cover might possibly reduce spray drift. These findings could help supporting drift mitigation policies, stew- ardship advice and product labelling around the world.
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页数:9
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