Journal
SAR AND QSAR IN ENVIRONMENTAL RESEARCH
Volume 33, Issue 12, Pages 933-952Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/1062936X.2022.2148738
Keywords
Plant protection product; pesticide application; bioaccumulation; food safety; plant uptake model
Categories
Funding
- National Natural Science Foundation of China
- [42107495]
Ask authors/readers for more resources
The study proposed a mechanism-based model to understand the fate of pesticides on plant surfaces. Simulation results showed that pesticide spray solution dissipated rapidly, forming a saturated pesticide solution on plant surfaces, which facilitated the diffusion of pesticide residues into peel tissues.
Pesticide residues on plant surfaces are a primary source of pesticide bioaccumulation in crops. In this context, we propose a mechanism-based model for understanding the pesticide fate on the plant surface following aerial application, taking into account fate modelling of the pesticide spray solution on the plant surface. Using chlorothalonil as an example, the simulation results revealed that the spray solution dissipated rapidly after aerial application, resulting in the formation of a saturated pesticide solution, which facilitated the diffusion process of the pesticide residue from the plant surface into the peel tissue. The proposed model generated higher simulated residue concentrations in the peel or pulp than the current model, owing to the proposed model's assumption of rapid dissipation of the spray solution. This indicated that the proposed model specified the influence of the spray solution on the plant's exposure to residues via the surface deposition pathway, whereas the current modelling approach presented a generic estimate of the residue dissipation on the plant surface that linked to the residue's fate in the soil.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available