Soil and water management in spate irrigation systems in Eritrea

M.T. Hadera

Research output: Thesisinternal PhD, WUAcademic

Abstract

<p>Spate irrigation has been practised over 100 years in the Red Sea coastal zone of Eritrea such as the Sheeb area. Main problem of the spate irrigation system is water shortage caused by irregular rainfall in the highlands of Eritrea and breaching of the irrigation structures by destructive big floods. Annually, a tremendous amount of soil with nutrients is eroded from the adjacent highlands, transported by seasonal streams (wadis) and deposited on the lowlands in the irrigated fields. The dominant types of soils of Sheeb area are the Fluvisols, which have good physical and chemical properties. The annual sedimentation on the spate fields enables the farmers to harvest a crop without application of fertilisers. A nutrient balance study revealed no soil mining in the spate fields. Farmers in Sheeb could obtain a more uniform water distribution over their fields with better levelling. Of the total area of Sheeb (8,000 ha), about 3,160 ha of land was classified as highly and moderately suitable for spate irrigation. When the flood diversion structures (at wadis Laba and Maiule) are made more permanent, an additional 2, 000 ha of land can be irrigated. In general, spate irrigation production system is a 'cost effective' system if the irrigation structures are properly maintained at low cost and if the fields receive enough water and nutrients.</p>
Original languageEnglish
QualificationDoctor of Philosophy
Awarding Institution
  • Wageningen University
Supervisors/Advisors
  • Stroosnijder, L., Promotor
Award date20 Mar 2001
Place of PublicationS.l.
Publisher
Print ISBNs9789058083883
Publication statusPublished - 2001

Fingerprint

soil management
irrigation system
water management
irrigation
Fluvisol
soil
nutrient
leveling
cost
production system
water
coastal zone
chemical property
physical property
fertilizer
sedimentation
rainfall
crop
land

Keywords

  • irrigation
  • water harvesting
  • soil management
  • land capability
  • soil physics
  • eritrea

Cite this

Hadera, M.T.. / Soil and water management in spate irrigation systems in Eritrea. S.l. : S.n., 2001. 211 p.
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title = "Soil and water management in spate irrigation systems in Eritrea",
abstract = "Spate irrigation has been practised over 100 years in the Red Sea coastal zone of Eritrea such as the Sheeb area. Main problem of the spate irrigation system is water shortage caused by irregular rainfall in the highlands of Eritrea and breaching of the irrigation structures by destructive big floods. Annually, a tremendous amount of soil with nutrients is eroded from the adjacent highlands, transported by seasonal streams (wadis) and deposited on the lowlands in the irrigated fields. The dominant types of soils of Sheeb area are the Fluvisols, which have good physical and chemical properties. The annual sedimentation on the spate fields enables the farmers to harvest a crop without application of fertilisers. A nutrient balance study revealed no soil mining in the spate fields. Farmers in Sheeb could obtain a more uniform water distribution over their fields with better levelling. Of the total area of Sheeb (8,000 ha), about 3,160 ha of land was classified as highly and moderately suitable for spate irrigation. When the flood diversion structures (at wadis Laba and Maiule) are made more permanent, an additional 2, 000 ha of land can be irrigated. In general, spate irrigation production system is a 'cost effective' system if the irrigation structures are properly maintained at low cost and if the fields receive enough water and nutrients.",
keywords = "bodembeheer, grondvermogen, eritrea, irrigatie, regenwateropvang, bodemfysica, irrigation, water harvesting, soil management, land capability, soil physics, eritrea",
author = "M.T. Hadera",
note = "WU thesis 2951 Ook verschenen als: Tropical resource management papers, no. 36 (2001); ISSN 0926-9495 Proefschrift Wageningen",
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Hadera, MT 2001, 'Soil and water management in spate irrigation systems in Eritrea', Doctor of Philosophy, Wageningen University, S.l..

Soil and water management in spate irrigation systems in Eritrea. / Hadera, M.T.

S.l. : S.n., 2001. 211 p.

Research output: Thesisinternal PhD, WUAcademic

TY - THES

T1 - Soil and water management in spate irrigation systems in Eritrea

AU - Hadera, M.T.

N1 - WU thesis 2951 Ook verschenen als: Tropical resource management papers, no. 36 (2001); ISSN 0926-9495 Proefschrift Wageningen

PY - 2001

Y1 - 2001

N2 - Spate irrigation has been practised over 100 years in the Red Sea coastal zone of Eritrea such as the Sheeb area. Main problem of the spate irrigation system is water shortage caused by irregular rainfall in the highlands of Eritrea and breaching of the irrigation structures by destructive big floods. Annually, a tremendous amount of soil with nutrients is eroded from the adjacent highlands, transported by seasonal streams (wadis) and deposited on the lowlands in the irrigated fields. The dominant types of soils of Sheeb area are the Fluvisols, which have good physical and chemical properties. The annual sedimentation on the spate fields enables the farmers to harvest a crop without application of fertilisers. A nutrient balance study revealed no soil mining in the spate fields. Farmers in Sheeb could obtain a more uniform water distribution over their fields with better levelling. Of the total area of Sheeb (8,000 ha), about 3,160 ha of land was classified as highly and moderately suitable for spate irrigation. When the flood diversion structures (at wadis Laba and Maiule) are made more permanent, an additional 2, 000 ha of land can be irrigated. In general, spate irrigation production system is a 'cost effective' system if the irrigation structures are properly maintained at low cost and if the fields receive enough water and nutrients.

AB - Spate irrigation has been practised over 100 years in the Red Sea coastal zone of Eritrea such as the Sheeb area. Main problem of the spate irrigation system is water shortage caused by irregular rainfall in the highlands of Eritrea and breaching of the irrigation structures by destructive big floods. Annually, a tremendous amount of soil with nutrients is eroded from the adjacent highlands, transported by seasonal streams (wadis) and deposited on the lowlands in the irrigated fields. The dominant types of soils of Sheeb area are the Fluvisols, which have good physical and chemical properties. The annual sedimentation on the spate fields enables the farmers to harvest a crop without application of fertilisers. A nutrient balance study revealed no soil mining in the spate fields. Farmers in Sheeb could obtain a more uniform water distribution over their fields with better levelling. Of the total area of Sheeb (8,000 ha), about 3,160 ha of land was classified as highly and moderately suitable for spate irrigation. When the flood diversion structures (at wadis Laba and Maiule) are made more permanent, an additional 2, 000 ha of land can be irrigated. In general, spate irrigation production system is a 'cost effective' system if the irrigation structures are properly maintained at low cost and if the fields receive enough water and nutrients.

KW - bodembeheer

KW - grondvermogen

KW - eritrea

KW - irrigatie

KW - regenwateropvang

KW - bodemfysica

KW - irrigation

KW - water harvesting

KW - soil management

KW - land capability

KW - soil physics

KW - eritrea

M3 - internal PhD, WU

SN - 9789058083883

PB - S.n.

CY - S.l.

ER -