Resumen

MIRANDA, Jarbas H. de  y  DUARTE, Sergio N.. A simulation model of nitrate displacement in vertical columns in a non-saturated soil. Rev. bras. eng. agríc. ambient. [online]. 2002, vol.6, n.2, pp. 235-241. ISSN 1807-1929.  http://dx.doi.org/10.1590/S1415-43662002000200009.

Intensive agriculture always aims at increased productivity, with limited or no attention dedicated to possible impacts on the environment. Therefore, the understanding of processes of solute transport in the soil contributes to reduction of leaching to the deep layers. In this connection, the present study had the objective of developing and evaluating a computational model for solute displacement simulation in the soil based on numerical solutions of differential equations describing this displacement. From the results obtained, the model presented a good agreement of nitrate concentrations as well as soil moisture profile when compared with the results obtained on a vertical column of non-saturated soil under laboratory conditions.

Palabras llave : solute displacement; modeling; simulation; soil column.