Assessment and simulation of water and nitrogen transfer under furrow irrigation

• Published in: Agricultural water management Vol. 95; no. 4; pp. 354 - 366
• Main Authors: Crevoisier, D., Popova, Z., Mailhol, J.C., Ruelle, P.
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 01.04.2008; Amsterdam; New York: Elsevier; Elsevier Science; Elsevier; Elsevier Masson
• Series: Agricultural Water Management
• Subjects: Agricultural and forest climatology and meteorology. Irrigation. Drainage; Agricultural sciences; Agronomy; Agronomy. Soil science and plant productions; Alternative furrow irrigation; Biological and medical sciences; calibration; Computer Science; drainage; Drainage and nitrogen leaching; Earth Sciences; Environmental Sciences; fertilizer application; Fundamental and applied biological sciences. Psychology; Furrow irrigation; General agronomy. Plant production; Global Changes; hydrologic models; Hydrology; HYDRUS-2D model calibration and validation; Irrigation. Drainage; leaching; Life Sciences; Lysimeter experiments; model validation; Modeling and Simulation; nitrogen; Physical properties; Physics, chemistry, biochemistry and biology of agricultural and forest soils; risk assessment; Sciences and technics of agriculture; Sciences of the Universe; simulation models; Soil science; soil solution; soil transport processes; soil water movement; Water and solute dynamics; Water and solute transfer parameters; Bulgaria; Europe; MED, Bulgaria; Bulgaria, Sofia; Water and solute transfer parameters; Alternative furrow irrigation; Furrow irrigation; HYDRUS-2D model calibration and validation; Lysimeter experiments; Drainage and nitrogen leaching; Water; Lysimetry; Solutes; Inorganic element; Nitrogen transfer; Engineering; Model calibration; Water engineering; Soil science; Validation; Evaluation; Nitrogen; Experimental study; Leaching; Mass transfer; Drainage; Alternative method; Parameter; Numerical simulation; ALTERNATIVE FURROW IRRIGATION; LYSIMETER EXPERIMENTS; FURROW IRRIGATION; HYDRUS-2D MODEL CALIBRATION AND VALIDATION; WATER AND SOLUTE TRANSFER PARAMETERS; DRAINAGE AND NITROGEN LEACHING
• ISSN: 0378-3774; 1873-2283
• DOI: 10.1016/j.agwat.2007.10.021

The objective of this study is to simulate water and nitrogen transfers under two furrow irrigation technologies (every furrow irrigation (EFI) and alternative furrow irrigation (AFI)) on Chromic Luvisol in Sofia region, Bulgaria. A bi-dimensional water and solutes transport modeling approach, HYDRUS-2D model [Simunek, J., Sejna, M., Van Genuchten, M.T., 1999. The HYDRUS-1D and HYDRUS-2D codes for estimating unsaturated soil hydraulic and solutes transport parameters. Agron Abstr. 357] is adopted in order to consider the technology of irrigation and fertilization. The model is calibrated in six steps using detailed data observed in two cropped lysimeters. The data consist of water and nitrogen (N) profiles below ridge and furrow bed, precipitation, drainage and water/N uptake by plant. Hydrological components of the soil are derived from laboratory: water retention data (step (i)) and adjusted to field conditions when EFI is approximated by one-dimensional (step (ii)). Then a two-dimensional water flow is adopted in model simulations for parameter calibration and verification, under EFI (step (iii)) and under AFI technology (step (iv)). This model calibration and validation is then used to calibrate the solute transport parameters, that is the aim of step (v) and step (vi). EFI and particularly AFI technologies points out the necessary 2D model using for the N transfer simulation under specific fertilizer applications. Thus, this calibrated model allows predicting the impact of furrow irrigation practices and distribution uniformity on drainage and nitrogen leaching under the studied conditions.