Assessing Hydrus-2D Model to Investigate the Effects of Different On-Farm Irrigation Strategies on Potato Crop under Subsurface Drip Irrigation

Giuseppe Provenzano, Abdelhamid Boujelben, Giovanni Rallo, Boutheina Douh, Amel Mguidiche, Hiba Ghazouani, Basma Latrech

Risultato della ricerca: Article

4 Citazioni (Scopus)

Abstract

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 accurately predict soil water contents and electrical conductivity around buried emitters. Furthermore, under water and salt stress conditions, “measured” Ks, based on crop water stress index (CWSI) obtained on thermal images, resulted in a good correlation with the corresponding estimated by the model (R2 = 0.8). The database collected during the three growth seasons also allowed the definition of the crop productive function represented by a linear relationship between the relative yield loss and Ks. This function represents a useful guidelines for the sustainable use of irrigation water in countries characterized by a semi-arid climate and a limited availability of water for irrigation.
Lingua originaleEnglish
pagine (da-a)540-558
Numero di pagine19
RivistaWATER
Volume11
Stato di pubblicazionePublished - 2019

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Subirrigation
subsurface irrigation
drip irrigation
Solanum tuberosum
microirrigation
irrigation
Irrigation
irrigation management
potato
Farms
Crops
farm
potatoes
Dehydration
water
farms
crop
Water
crops
semiarid zones

All Science Journal Classification (ASJC) codes

  • Biochemistry
  • Geography, Planning and Development
  • Aquatic Science
  • Water Science and Technology

Cita questo

Assessing Hydrus-2D Model to Investigate the Effects of Different On-Farm Irrigation Strategies on Potato Crop under Subsurface Drip Irrigation. / Provenzano, Giuseppe; Boujelben, Abdelhamid; Rallo, Giovanni; Douh, Boutheina; Mguidiche, Amel; Ghazouani, Hiba; Latrech, Basma.

In: WATER, Vol. 11, 2019, pag. 540-558.

Risultato della ricerca: Article

Provenzano, G, Boujelben, A, Rallo, G, Douh, B, Mguidiche, A, Ghazouani, H & Latrech, B 2019, 'Assessing Hydrus-2D Model to Investigate the Effects of Different On-Farm Irrigation Strategies on Potato Crop under Subsurface Drip Irrigation', WATER, vol. 11, pagg. 540-558.
Provenzano, Giuseppe ; Boujelben, Abdelhamid ; Rallo, Giovanni ; Douh, Boutheina ; Mguidiche, Amel ; Ghazouani, Hiba ; Latrech, Basma. / Assessing Hydrus-2D Model to Investigate the Effects of Different On-Farm Irrigation Strategies on Potato Crop under Subsurface Drip Irrigation. In: WATER. 2019 ; Vol. 11. pagg. 540-558.
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abstract = "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 accurately predict soil water contents and electrical conductivity around buried emitters. Furthermore, under water and salt stress conditions, “measured” Ks, based on crop water stress index (CWSI) obtained on thermal images, resulted in a good correlation with the corresponding estimated by the model (R2 = 0.8). The database collected during the three growth seasons also allowed the definition of the crop productive function represented by a linear relationship between the relative yield loss and Ks. This function represents a useful guidelines for the sustainable use of irrigation water in countries characterized by a semi-arid climate and a limited availability of water for irrigation.",
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AU - Boujelben, Abdelhamid

AU - Rallo, Giovanni

AU - Douh, Boutheina

AU - Mguidiche, Amel

AU - Ghazouani, Hiba

AU - Latrech, Basma

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AB - 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 accurately predict soil water contents and electrical conductivity around buried emitters. Furthermore, under water and salt stress conditions, “measured” Ks, based on crop water stress index (CWSI) obtained on thermal images, resulted in a good correlation with the corresponding estimated by the model (R2 = 0.8). The database collected during the three growth seasons also allowed the definition of the crop productive function represented by a linear relationship between the relative yield loss and Ks. This function represents a useful guidelines for the sustainable use of irrigation water in countries characterized by a semi-arid climate and a limited availability of water for irrigation.

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