Zobrazeno 1 - 10
of 28
pro vyhledávání: '"Herman Depeweg"'
Publikováno v:
Irrigation and Drainage. 65:589-600
Publikováno v:
Irrigation and Drainage. 65:294-307
Tigray is one of the semi-arid and drought-prone regions of Ethiopia. The rainfed agriculture is characterized by low productivity and the region faces an average annual cereal food deficit of 180 000 t. Realizing these problems, the regional governm
Publikováno v:
Irrigation and Drainage. 63:584-589
Canal design for sediment transport requires the use of sediment transport predictors. The predictors are derived for a small range of flows and mostly considered for wide canals. The use of these equations in irrigation canals needs some adaptation.
Publikováno v:
Irrigation and Drainage. 62:161-169
Irrigation schemes with sediment-laden water are generally performing significantly below expectation and potential. Managing such irrigation schemes is challenging as in most cases the management aspects of sediment transport were not included in th
Sediment transport in irrigation canals influences to a great extent the sustainability of an irrigation system. Unwanted erosion or deposition will not only increase maintenance costs, but may also lead to unfair, unreliable and unequitable distribu
Publikováno v:
Irrigation and Drainage 54 (2005) 4
Irrigation and Drainage, 54(4), 389-406
Irrigation and Drainage, 54(4), 389-406
Spate irrigation is a method of harvesting and managing floodwater, which is unpredictable in timing and volume. In the spate-irrigated area of 16 000 ha in Eritrea, the farmers have for decades used brushwood and earthen diversion and distribution s
Autor:
Saleh M. Ismail, Herman Depeweg
Publikováno v:
Irrigation and Drainage. 54:217-230
This paper describes the simulation results for continuous and surge flow irrigation under short field conditions by the computer model SIRMOD III in order to evaluate the performance and applicability of the model for short furrows and to investigat
Autor:
Saleh M. Ismail, Herman Depeweg
Publikováno v:
Irrigation and Drainage. 54:103-113
Cet article decrit les resultats des simulations effectuees en vue d'optimiser la rentabilite de l'eau et la recolte agricole en fonction du type d'amenee d'eau, continue ou par vagues pour les parcelles de dimensions reduites et de sols argileux ou
Autor:
Elga Rocabado Urquieta, Herman Depeweg
Publikováno v:
Irrigation and Drainage. 53:301-314
Les dernieres decennies ont montre un progres inimaginable dans le domaine des technologies de l'information notamment pour la planification et l'utilisation des ressources en eau et en sol, en particulier grâce a l'introduction des Systemes d'Infor
Autor:
Herman Depeweg, Martha Fabiola Otero
Publikováno v:
Irrigation and Drainage. 53:55-67
Le district de RUT possede un systeme d'irrigation et de drainage avec une protection contre les inondations. L'eau est non seulement pompee pour assurer le drainage du polder durant la saison humide, mais aussi pour alimenter le systeme d'irrigation