Water Conservation Science and Engineering

, Volume 4, Issue 2–3, pp 123–131 | Cite as

Evaluation of Soil Nitrate Accumulation under Different Fertigation Regimes and Simulation by the Hydrus-1D Model

  • Omid BahmaniEmail author
  • Ali Akbar Sabziparvar
  • Hossein Javadi
  • Vahid Atlassi Pak
  • Saeed Boroomand Nasab
Original Paper


Nitrate loss is a major reason for non-point source contamination on agricultural lands. The objective of this study was to assess the Hydrus-1D model for simulation of soil nitrate in different irrigation regimes, including 100 (I1), 85 (I2), and 70 (I3) % of the water requirement for sugarcane and different urea fertilization rates with 150 (N1), 250 (N2), and 350 (N3) kg/ha. Van Genuchten (VG) parameters were estimated by the RETC [Retention Curve Program for Unsaturated Soils] program. According to the results, by reducing the amount of irrigation water, the soil nitrate accumulation from the soil surface to the deep soil increased by 17 and 35% under I2 and I3 treatments compared with I1. Results showed that the Hydrus-1D model had fair potential for predicting the NO3-N accumulation in the soil profile over the sampling period (AE: −1.25 to 0.99, RMSE: 0.96 to 2.50, d: 0.78 to 0.98). The coefficient of determination between the field measured and simulated values in the soil layers at depths of 30, 60, 90 and 120 cm were 0.87, 0.88, 0.74, and 0.52, respectively. To reduce nitrogen losses, fertilizer application rates must be considered based on sugarcane needs and soil hydraulic properties.


Nitrate Deficit irrigation Soil pollution Hydrus-1D 



We are grateful to the Institute for Research and Training on Development and sugarcane industries in Khuzestan, Iran, for performing laboratory analyses of nitrate content in soil samples.


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Copyright information

© Springer Nature Singapore Pte Ltd. 2019

Authors and Affiliations

  • Omid Bahmani
    • 1
    Email author
  • Ali Akbar Sabziparvar
    • 1
  • Hossein Javadi
    • 1
  • Vahid Atlassi Pak
    • 2
  • Saeed Boroomand Nasab
    • 3
  1. 1.Department of Water Engineering, Faculty of AgricultureBu-Ali Sina UniversityHamedanIran
  2. 2.Payam Noor UniversityHamedanIran
  3. 3.Department of Water Engineering, Faculty of Science & Water EngineeringShahid Chamran UniversityAhvazIran

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