A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Using drainage systems for supplementary irrigation
Abstract The use of drainage systems for supplementary irrigation is widespread in The Netherlands. One of the operating policies is to raise the surface water level during the growing season in order to reduce drainage (water conservation) or to create subsurface irrigation. This type of operation is based on practical experience, which can be far from optimal. To obtain better founded operational water management rules a “total” soil water/surface water model was built. In a case study the effects of using the drainage system in a dual-purpose manner on the arable crop production were simulated with the model. Also, the operational rules for managing this type of dual-purpose drainage systems were derived. The average annual simulated increase in crop transpiration due to water conservation and water supply for subsurface irrigation are 6.0 and 5.4 mm.$ y^{−1} $, respectively. This is equivalent with 520 × $ 10^{3} $ and 460 × $ 10^{3} $ Dfl.$ y^{−1} $ for the pilot region (2 Dfl ≈ 1 US $). The corresponding investments and operational costs are 600 × $ 10^{3} $ Dfl and 9 × $ 10^{3} $ Dfl.$ y^{−1} $ for water conservation and 3200 × $ 10^{3} $ Dfl and 128 × $ 10^{3} $ Dfl.$ y^{−1} $ for subsurface irrigation. Hence, water conservation is economically very profitable, whereas subsurface irrigation is less attractive. Comparing the management according to the model with current practice in a water-board during 1983 and 1986 learned that benefits can increase with some 50 and 500 Dfl per ha per year, respectively.
Using drainage systems for supplementary irrigation
Abstract The use of drainage systems for supplementary irrigation is widespread in The Netherlands. One of the operating policies is to raise the surface water level during the growing season in order to reduce drainage (water conservation) or to create subsurface irrigation. This type of operation is based on practical experience, which can be far from optimal. To obtain better founded operational water management rules a “total” soil water/surface water model was built. In a case study the effects of using the drainage system in a dual-purpose manner on the arable crop production were simulated with the model. Also, the operational rules for managing this type of dual-purpose drainage systems were derived. The average annual simulated increase in crop transpiration due to water conservation and water supply for subsurface irrigation are 6.0 and 5.4 mm.$ y^{−1} $, respectively. This is equivalent with 520 × $ 10^{3} $ and 460 × $ 10^{3} $ Dfl.$ y^{−1} $ for the pilot region (2 Dfl ≈ 1 US $). The corresponding investments and operational costs are 600 × $ 10^{3} $ Dfl and 9 × $ 10^{3} $ Dfl.$ y^{−1} $ for water conservation and 3200 × $ 10^{3} $ Dfl and 128 × $ 10^{3} $ Dfl.$ y^{−1} $ for subsurface irrigation. Hence, water conservation is economically very profitable, whereas subsurface irrigation is less attractive. Comparing the management according to the model with current practice in a water-board during 1983 and 1986 learned that benefits can increase with some 50 and 500 Dfl per ha per year, respectively.
Using drainage systems for supplementary irrigation
Van Bakel, P. J. T. (author)
1988
Article (Journal)
English
Irrigation and drainage systems
TIBKAT | 1.1986/87 - 25.2011; damit Ersch. eingest.
Irrigation and drainage systems
UB Braunschweig | 1.1986/87 - 25.2011; damit Ersch. eingest.
Increased Irrigation Systems Operation Efficiency Using Drainage Water
| British Library Conference Proceedings | 1992
Using drainage effluent for irrigation
| British Library Conference Proceedings | 1993
Automation of irrigation and drainage systems
| UB Braunschweig | 1968