Ridge & Basin [Ethiopia]
- Creation:
- Update:
- Compiler: Unknown User
- Editor: –
- Reviewers: Fabian Ottiger, Alexandra Gavilano
Monna (Konso Language)
technologies_979 - Ethiopia
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Expand all Collapse all1. General information
1.3 Conditions regarding the use of data documented through WOCAT
The compiler and key resource person(s) accept the conditions regarding the use of data documented through WOCAT:
Ja
2. Description of the SLM Technology
2.1 Short description of the Technology
Definition of the Technology:
It is a rectangular shaped soil embankment created in digging up sol and farming ridge and a basin for harvesting moisture.
2.2 Detailed description of the Technology
Description:
It is rectangular soil embankment made with local implement called 'Bayra' and maintained every three years during dry season. The technology is applied on moderately deep soils. It is intended for moisture harvesting. Establishment is made by visual survey and then the soil excavated using local implement and maintained wherever there is a need for maintenance. Low and erratic nature of rainfall, shallow to moderately deep soils and medium textured soils are some of the governing factors for the technology.
2.5 Country/ region/ locations where the Technology has been applied and which are covered by this assessment
Country:
Ethiopia
Region/ State/ Province:
SNNPR
Map
×2.6 Date of implementation
If precise year is not known, indicate approximate date:
- more than 50 years ago (traditional)
2.7 Introduction of the Technology
Specify how the Technology was introduced:
- as part of a traditional system (> 50 years)
Comments (type of project, etc.):
It is practiced since long time by the Konso Tribes
3. Classification of the SLM Technology
3.2 Current land use type(s) where the Technology is applied
Cropland
- Annual cropping
- Perennial (non-woody) cropping
Annual cropping - Specify crops:
- cereals - sorghum
- fibre crops - cotton
- legumes and pulses - beans
- legumes and pulses - peas
- pigeon peas
Number of growing seasons per year:
- 2
Specify:
Longest growing period in days: 150 Longest growing period from month to month: Mar - Jul Second longest growing period in days: 120 Second longest growing period from month to month: Aug - Dec
Is intercropping practiced?
Ja
Comments:
Major land use problems (compiler’s opinion): land shortage, pest, high price of inputs, low rainfall and erratic nature
Major land use problems (land users’ perception): land shortage, pest, low rainfall
Type of cropping system and major crops comments: inter cropping
3.4 Water supply
Water supply for the land on which the Technology is applied:
- rainfed
3.5 SLM group to which the Technology belongs
- water harvesting
3.6 SLM measures comprising the Technology
structural measures
- S4: Level ditches, pits
Comments:
Main measures: structural measures
Secondary measures: vegetative measures
Type of agronomic measures: mixed cropping / intercropping, contour ridging
3.7 Main types of land degradation addressed by the Technology
soil erosion by water
- Wt: loss of topsoil/ surface erosion
water degradation
- Ha: aridification
Comments:
Main type of degradation addressed: Ha: aridification
Secondary types of degradation addressed: Wt: loss of topsoil / surface erosion
Main causes of degradation: other natural causes (avalanches, volcanic eruptions, mud flows, highly susceptible natural resources, extreme topography, etc.) specify, poverty / wealth (Lack of captial)
Secondary causes of degradation: other human induced causes (specify) (Agricultural causes), labour availability (Lack of labour)
4. Technical specifications, implementation activities, inputs, and costs
4.1 Technical drawing of the Technology
Technical specifications (related to technical drawing):
Technical knowledge required for land users: moderate
Main technical functions: Moisture harvesting
Secondary technical functions: control of dispersed runoff: retain / trap, increase / maintain water stored in soil
Mixed cropping / intercropping
Material/ species: Sorghum,pigeon peas, cotton, beans
Contour ridging
Material/ species: layout is on nearly contour and accrose the slope. The ridges are mostly rectangular with 3x2, 4x3m
Gradient along the rows / strips: 0.00%
4.2 General information regarding the calculation of inputs and costs
other/ national currency (specify):
Ethiopian Birr
If relevant, indicate exchange rate from USD to local currency (e.g. 1 USD = 79.9 Brazilian Real): 1 USD =:
8.5
Indicate average wage cost of hired labour per day:
0.65
4.3 Establishment activities
Activity | Timing (season) | |
---|---|---|
1. | Land preparation | dry season |
2. | Planting | onset of rain |
3. | Weeding | rainy season |
4. | Lay out | dry season |
5. | Soil excavation | dry season |
4.4 Costs and inputs needed for establishment
Comments:
Duration of establishment phase: 12 month(s)
4.5 Maintenance/ recurrent activities
Activity | Timing/ frequency | |
---|---|---|
1. | Land preparation | |
2. | Planting of sorghum | |
3. | Planting of cotton | |
4. | Planting of pigeon peas | |
5. | Planting of beans | |
6. | Soil excavation | dry season/each cropping season |
7. | Soil excavation | dry season/each cropping season |
4.6 Costs and inputs needed for maintenance/ recurrent activities (per year)
Comments:
Per ha of land treated
4.7 Most important factors affecting the costs
Describe the most determinate factors affecting the costs:
Labour, farm implement, soil workability and surface stoniness
5. Natural and human environment
5.1 Climate
Annual rainfall
- < 250 mm
- 251-500 mm
- 501-750 mm
- 751-1,000 mm
- 1,001-1,500 mm
- 1,501-2,000 mm
- 2,001-3,000 mm
- 3,001-4,000 mm
- > 4,000 mm
Agro-climatic zone
- semi-arid
5.2 Topography
Slopes on average:
- flat (0-2%)
- gentle (3-5%)
- moderate (6-10%)
- rolling (11-15%)
- hilly (16-30%)
- steep (31-60%)
- very steep (>60%)
Landforms:
- plateau/plains
- ridges
- mountain slopes
- hill slopes
- footslopes
- valley floors
Altitudinal zone:
- 0-100 m a.s.l.
- 101-500 m a.s.l.
- 501-1,000 m a.s.l.
- 1,001-1,500 m a.s.l.
- 1,501-2,000 m a.s.l.
- 2,001-2,500 m a.s.l.
- 2,501-3,000 m a.s.l.
- 3,001-4,000 m a.s.l.
- > 4,000 m a.s.l.
5.3 Soils
Soil depth on average:
- very shallow (0-20 cm)
- shallow (21-50 cm)
- moderately deep (51-80 cm)
- deep (81-120 cm)
- very deep (> 120 cm)
Soil texture (topsoil):
- medium (loamy, silty)
Topsoil organic matter:
- medium (1-3%)
- low (<1%)
If available, attach full soil description or specify the available information, e.g. soil type, soil PH/ acidity, Cation Exchange Capacity, nitrogen, salinity etc.
Soil fertility is low. Also very low - medium
Soil drainage/infiltration is good
Soil water storage capacity is medium/low
5.6 Characteristics of land users applying the Technology
Off-farm income:
- less than 10% of all income
Relative level of wealth:
- poor
- average
Level of mechanization:
- manual work
Indicate other relevant characteristics of the land users:
Population density: 10-50 persons/km2
Annual population growth: 2% - 3%
60% of the land users are average wealthy and own 60% of the land.
25% of the land users are poor and own 35% of the land.
20% of the land users are poor and own 5% of the land.
Off-farm income specification: No considerable difference
Level of mechanization: Manual labour (Animal traction is hindered as a result of the ridge and basin structures. It means that only hoe cultivation is possible)
5.8 Land ownership, land use rights, and water use rights
Land ownership:
- individual, titled
Land use rights:
- individual
6. Impacts and concluding statements
6.4 Cost-benefit analysis
How do the benefits compare with the establishment costs (from land users’ perspective)?
Short-term returns:
slightly positive
Long-term returns:
very positive
How do the benefits compare with the maintenance/ recurrent costs (from land users' perspective)?
Short-term returns:
positive
Long-term returns:
very positive
6.5 Adoption of the Technology
Of all those who have adopted the Technology, how many did so spontaneously, i.e. without receiving any material incentives/ payments?
- 0-10%
Comments:
100% of land user families have adopted the Technology with external material support
Comments on acceptance with external material support: estimates
There is a strong trend towards spontaneous adoption of the Technology
Comments on adoption trend: The technology started over 400 years ago and it is already part of the farming systems.
7. References and links
7.1 Methods/ sources of information
Links and modules
Expand all Collapse allLinks
No links
Modules
No modules