Recently, the pesticide application risk control innovation team of the Institute of plant protection, Chinese Academy of Agricultural Sciences, published the top journal enviro in the field of environmentnmental Science & Technology published online a report entitled”characterization of plant accumulation of pharmaceuticals from soils with their CoThe research paper”concentration in soil pore water” reveals that the amount of pollutants dissolved in soil pore water determines the amount that can be absorbed by plants, rather than the total concentration of soil pollutants, which provides important parameters and guidance for the pollution prediction of agrochemicals in agricultural production areas.
Soil is the”sink” of various agricultural pollutants (such as pesticides, antibiotics, etc.), and the migration and accumulation of pollutants from soil to vegetables and other crops is an important way for them to enter the human food chain. Effectively predicting the amount of pollutants in soil entering crops is very important for accurately evaluating the pollution degree of agricultural products. Generally, pollutants will go through complex physical and chemical processes such as adsorption/desorption and metabolic transformation after entering the soil, and soils with different physical and chemical properties have a great impact on these processes, which poses a serious obstacle to accurately predict the amount of pollutants absorbed by crops from the soil. By systematically studying the migration and distribution behavior of 15 emerging agricultural pollutants in three different soil pore water radish systems, this paper confirmed that the amount of pollutants accumulated in plants has no direct correlation with their total amount in soil, but has an obvious positive correlation with their amount in soil pore water. This study reveals with detailed data that only the amount of pollutants freely dissolved in soil pore water determines the amount of pollutants that can enter plants, not the total amount of soil. The results provide important data support and theoretical guidance for building an effective model to accurately predict the amount of agricultural pollutants absorbed by crops from soil.
This research is the result of international cooperation between the Institute of plant protection of the Chinese Academy of Agricultural Sciences and Michigan State University. The Institute of plant protection of the Chinese Academy of Agricultural Sciences is the first completion unit of the paper, researcher Li Yuanbo of the pesticide application risk control innovation team is the first author of the paper, and Professor Li Hui of Michigan State University is the corresponding author of the paper. The research was supported by national key research and development plan, agricultural talents and other projects.
Original link:https://pubs.acs.org/doi/10.1021/acs.est.2c00303?fig= “tgr1&ref=pdf