Estimating Nitrate Leaching to Groundwater from Orchards : Comparing Crop Nitrogen Excess , Deep Vadose Zone Data-Driven Estimates , and HYDRUS Modeling

  title={Estimating Nitrate Leaching to Groundwater from Orchards : Comparing Crop Nitrogen Excess , Deep Vadose Zone Data-Driven Estimates , and HYDRUS Modeling},
  author={Shahar Baram and Valentin Couvreur and Tod Harter and Matthew Joel Read and Patrick H. Brown and Maziar M. Kandelous and David R. Smart and Jan W. Hopmans},
Large spatial and temporal variability in water flow and N transport dynamics poses significant challenges to accurately estimating N losses form orchards. A 2-yr study was conducted to explore nitrate (NO3) leaching below the root zone of an almond [Prunus dulcis (Mill.) D. A. Webb] orchard. Temporal changes in water content, pore water NO3 concentrations and soil water potential were monitored within and below the root zone to a soil depth of 3 m at eight sites, which represented spatial… CONTINUE READING


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