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Assessing Hydrus-2D model to investigate the effects of different on-farm irrigation strategies on potato crop under subsurface drip irrigation

2019

The objective of this paper was to assess the performance of Hydrus-2D model to simulate the effects of different on-farm irrigation strategies applied on potato crop. The ability of the model to simulate the stress coefficient (Ks), obtained as the ratio between actual and maximum transpiration, and to define the productive function of potato crop under the semi-arid conditions of central Tunisia were also evaluated. Experiments were carried out on potato crop under full (FI) and deficit irrigation (DI) and two different water qualities supplied by means of a subsurface drip irrigation system. Results evidenced that the model, despite some discrepancies locally observed, can fairly accurat…

CWSI; Deficit irrigation; Hydrus-2D; Potato crop; Saline water; Stress coefficientHydrusIrrigationlcsh:Hydraulic engineeringGeography Planning and DevelopmentDeficit irrigation0207 environmental engineeringSettore AGR/04 - Orticoltura E Floricoltura02 engineering and technologyAgricultural engineeringDrip irrigationAquatic ScienceBiochemistryCroplcsh:Water supply for domestic and industrial purposeslcsh:TC1-978Settore AGR/08 - Idraulica Agraria E Sistemazioni Idraulico-Forestali020701 environmental engineeringDeficit irrigationWater Science and TechnologyTranspirationlcsh:TD201-500CWSIHydrus-2DPotato crop04 agricultural and veterinary sciencesSaline waterRelative yieldSoil water040103 agronomy & agricultureStress coefficient0401 agriculture forestry and fisheriesEnvironmental science
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