Abstract
Transport of radioactive iodide 131I− in a black clay loam soil under spring barley in an early ontogenesis phase was monitored during controlled field irrigation experiment. It was found that iodide bound in the soil matrix could be mobilized by the surface leaching enhanced by mechanical impact of water drops and transported below the root zone of crops via soil cracks. The iodide transport through structured soil profile was simulated by the one-dimensional dual-continuum model, which assumes the existence of two inter-connected flow domains: the soil matrix domain and the preferential flow domain. The model predicted relatively deep percolation of iodide within a short time, in a good agreement with the observed vertical iodide distribution in soil. The dual-continuum approach proved to be an adequate tool for evaluation of field irrigation experiments conducted in structured soils.
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Special Section on Biohydrology, guest-editors Ľubomír Lichner & Kálmán Rajkai
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Dušek, J., Lichner, Ľ., Vogel, T. et al. Transport of iodide in structured soil under spring barley during irrigation experiment analyzed using dual-continuum model. Biologia 68, 1094–1098 (2013). https://doi.org/10.2478/s11756-013-0249-4
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DOI: https://doi.org/10.2478/s11756-013-0249-4