Uso da Reflectometria no Domínio do Tempo para avaliar a distribuição de nitrato em colunas de solos fertirrigados

The monitoring of spatial and temporal variation of the soil water content ( �), of the soil bulk electric conductivity (CE s), of the soil solution electric conductivity (CE ss ) and of the ion concentration (C i) enables to estimate the water loss by deep percolation and evapotranspiration, to determine the areas of nutrients extraction by plants and the possible nutrients loss by leaching. The of objective this work was to evaluate, using the TDR technique, the nitrate distribution in Typic Quartzipsamment (RQ) and Oxisol (LV) soil columns fertirrigated with calcium nitrate. Nitrate fertirrigations were accomplished in the columns, and the soil water content ( �) and the soil bulk electric conductivity (CE s) obtained

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