Resumo

CASAS, Juan C. et al. Mobility assessment of 2,4-dichlorophenoxyacetic acid in andic soils of the department of Cauca, Colombia. rev.udcaactual.divulg.cient. [online]. 2022, vol.25, n.2, e1772.  Epub 24-Out-2022. ISSN 0123-4226.  https://doi.org/10.31910/rudca.v25.n2.2022.1772.

The herbicide 2,4-dichlorophenoxyacetic acid (2,4-D) is a selective and systemic acid that has been widely used in agricultural soils since 1940. Its use lies in its selectivity between broadleaf vegetation and grass crops, and as a regulator of plant growth. However, this herbicide can accumulate in the environment, and additionally, it can be transported by leaching through the soil, contaminating groundwater, which generates a high risk for the environment and human health. In this study, the mobility of 2,4-D in organic-matter-rich soils was assessed. The results revealed that not only the organic material is indirectly correlated with the mobility of this compound but also influences humidity and reduces leaching and potential pollution of groundwater resources, whereas hydraulic conductivity is directly related to herbicide leaching.

Palavras-chave : Organic matter; Humidity; Hydraulic conductivity; Selective herbicide; Soil pollutants.

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