1.2 Detalles de contacto de las personas de referencia e instituciones involucradas en la evaluación y la documentación de la Tecnología

Nombre de la(s) institución(es) que facilitaron la documentación/ evaluación de la Tecnología (si fuera relevante)

Nombre de la(s) institución(es) que facilitaron la documentación/ evaluación de la Tecnología (si fuera relevante)

1.3 Condiciones referidas al uso de datos documentados mediante WOCAT

El compilador y la/s persona(s) de referencia claves aceptan las condiciones acerca del uso de los datos documentados mediante WOCAT:

Sí

2.1 Breve descripción de la Tecnología

Definición de la Tecnología:

Earh-checks are constructed of earth embankment put across in a deep gully in such a way to trap sediment and store water passing by it.

2.2 Descripción detallada de la Tecnología

Descripción:

Active deep gullies are plugged by digging earth from the bottom as well as gully sides and embanked forming a barrier to runoff passing through it. The embankment is reinforced by planting useful plants such as banana, sesbania, gravillea, gesho, etc., The purpose is to rehabilitate gullies having depth and expand along sides and towards the head. By constructing earth checks the water is stored in the checks. The water percolates down the ground enriching the ground water. The soil is trapped in the checks and later brings up the gully gradient higher. As a result, a cultivable/cropable strip is formed. Weeding and cultivation done to plants established.The gully fence and breaks are repaired. The technology is seen to be suitable to humid highlands where land loss by gully is a serious problem and land under cultivation and grazing is getting here and there. In brief it is suitable in areas where land degradation problem is increasing with currently cultivated and grazed lands are encroched by gully expansion.

2.3 Fotografías de la Tecnología

2.5 País/ región/ lugares donde la Tecnología fue aplicada y que se hallan comprendidos por esta evaluación

País:

Etiopía

Región/ Estado/ Provincia:

SNNPR

Especifique más el lugar :

SNNPR/Damot Galle/Bilate

Comentarios:

Total area covered by the SLM Technology is 51.2 km2.

Map

×

2.6 Fecha de la implementación

Si no se conoce el año preciso, indique la fecha aproximada:

• hace menos de 10 años (recientemente)

2.7 Introducción de la Tecnología

Especifique cómo se introdujo la Tecnología:

• mediante proyectos/ intervenciones externas

Comentarios (tipo de proyecto, etc.):

The technology is introduced but highly modified by adjesting design, layout and by increasing use of locally available materials for construction.

3.1 Propósito(s) principal(es) de la Tecnología MST

• reducir, prevenir, restaurar la degradación del suelo

3.2 Tipo(s) actuales de uso de la tierra donde se aplica la Tecnología

Mezcla de tipos de uso de tierras dentro de la misma unidad de tierras: :

Sí

Especifique el uso combinado de tierras (cultivos/ pastoreo/ árboles):

• Agro-silvopastoralismo

Tierras cultivadas

• Cosecha anual
• Cultivos perennes (no leñosos)
• Cosecha de árboles y arbustos

Cosechas anuales - Especifique cultivos:

• cereales - maíz
• cereales - sorgo
• cultivos de raíces/ tubérculos - patatas dulces, ñame, taro/cocoy am, otro
• cultivos de raíces/ tubérculos - mandioca
• cultivos de raíces/ tubérculos - patatas

Cultivos de matorrales y arbustos - Especifique cultivos:

• avocado
• frutas, otros
• mango, mangostán, guayaba
• papaya

• enset, taro, sugar cane, Leucaena, Sesbania, Grevillea

Número de temporadas de cultivo por año:

• 2

Especifique:

Longest growing period in days: 210 Longest growing period from month to month: Apr - Oct Second longest growing period in days: 180 Second longest growing period from month to month: Aug - Jun

¿Se practica el intercultivo?

Sí

Si respondió que sí, especifique qué cultivos son intercultivados:

maize-sweet potato/haricot bean

¿Se practica la rotación de cultivos?

Sí

Si fuera el caso, especifique :

maize-tarro-sorghum

Tierra de pastoreo

Tipo de animal:

• ganado - lechero
• caballos

• donkeys, oxen

Bosques

Productos y servicios:

• Madera
• Leña
• Pastoreo/ ramoneo

Comentarios:

Major land use problems (compiler’s opinion): Monocropping, soil erosion, fertility mining, overgrazing, improper runoff management.

Grazingland comments: Livestock such as cows, oxen, donkeys and horse are thethered at a very small piece of land left infront of houses usually meant for social purposes. Some farmers thether their animals in a piece of land left uncropped in the field. The most part of livestock feed comes from crop residue which is collected from crop fields. Maize stalk, teff straw and enset leaves are fed stall.

Forest products and services: timber, fuelwood, grazing / browsing

Type of cropping system and major crops comments: Maize-sweet potato-Teff-potato-sorghum

3.4 Provisión de agua

Provisión de agua para la tierra donde se aplica la Tecnología:

• de secano

3.5 Grupo MST al que pertenece la Tecnología

• medida de pendiente transversal
• cosecha de agua

3.6 Medidas MST que componen la Tecnología

3.7 Principales tipos de degradación del suelo encarados con la Tecnología

erosión de suelos por agua

• Wt: pérdida de capa arable/ erosión de la superficie
• Wg: erosión en cárcavas

deterioro químico del suelo

• Cn: reducción de la fertilidad y contenido reducido de la materia orgánica del suelo (no ocasionados por la erosión)

Comentarios:

Main type of degradation addressed: Wt: loss of topsoil / surface erosion, Wg: gully erosion / gullying

Secondary types of degradation addressed: Cn: fertility decline and reduced organic matter content

3.8 Prevención, reducción o restauración de la degradación del suelo

Especifique la meta de la Tecnología con relación a la degradación de la tierra:

• prevenir la degradación del suelo
• reducir la degradación del suelo

Comentarios:

Main goals: Also rehabilitation / reclamation of denuded land

4.1 Dibujo técnico de la Tecnología

Especificaciones técnicas (relacionadas al dibujo técnico):

SNNPR

Technical knowledge required for field staff / advisors: high

Technical knowledge required for land users: moderate

Main technical functions: water harvesting / increase water supply, sediment retention / trapping, sediment harvesting

Secondary technical functions: control of concentrated runoff: retain / trap, reduction of slope angle, reduction of slope length

Early planting
Material/ species: maize
Quantity/ density: 85000/ha
Remarks: sawn in lines

Mixed cropping / intercropping
Material/ species: maize-sweet potato/haricot bean
Remarks: inter cropped & strip cropped

Contour planting / strip cropping
Material/ species: maize-taro-enset

Mulching
Material/ species: enset

Manure / compost / residues
Material/ species: maize, potato, sweet potato, traro

Mineral (inorganic) fertilizers
Material/ species: Teff, maize, sorghum

Rotations / fallows
Material/ species: maize-tarro-sorghum
Remarks: only rotations

Breaking compacted topsoil
Remarks: primary and secondary oxen tillage

Contour tillage
Remarks: tillage done following contour

Agronomic measure: harrowing

Aligned: -contour
Vegetative material: O : other
Vertical interval between rows / strips / blocks (m): 0.2-0.5
Spacing between rows / strips / blocks (m): 2-4
Vertical interval within rows / strips / blocks (m): 0.5-2
Width within rows / strips / blocks (m): 0.5-1

Scattered / dispersed
Vegetative material: T : trees / shrubs
Number of plants per (ha): 4000
Vertical interval between rows / strips / blocks (m): 0.2
Spacing between rows / strips / blocks (m): 1.5x1.5
Vertical interval within rows / strips / blocks (m): 1.5
Width within rows / strips / blocks (m): 1.5

In blocks
Vegetative material: T : trees / shrubs
Number of plants per (ha): 2500
Vertical interval between rows / strips / blocks (m): 0.5
Spacing between rows / strips / blocks (m): 2x2
Vertical interval within rows / strips / blocks (m): 2
Width within rows / strips / blocks (m): 2

Trees/ shrubs species: Leucaena, Sesbania, Grevillea

Fruit trees / shrubs species: Mango, papaya, Avocado

Perennial crops species: Casava

Slope (which determines the spacing indicated above): 10.00%

If the original slope has changed as a result of the Technology, the slope today is (see figure below): 8.00%

Gradient along the rows / strips: 0.00%

Diversion ditch/ drainage
Depth of ditches/pits/dams (m): 0.5
Width of ditches/pits/dams (m): 0.5
Length of ditches/pits/dams (m): 100
Height of bunds/banks/others (m): 0.6
Width of bunds/banks/others (m): 0.5
Length of bunds/banks/others (m): 100

Retention/infiltration ditch/pit, sediment/sand trap
Vertical interval between structures (m): 0.5
Depth of ditches/pits/dams (m): 0.6
Width of ditches/pits/dams (m): 0.7
Length of ditches/pits/dams (m): 4
Height of bunds/banks/others (m): 0.75
Width of bunds/banks/others (m): 0.6

Terrace: backward sloping
Vertical interval between structures (m): 1.5
Spacing between structures (m): 12
Depth of ditches/pits/dams (m): 0.9
Width of ditches/pits/dams (m): 0.5
Length of ditches/pits/dams (m): 50-75

Bund/ bank: level
Vertical interval between structures (m): 1.2
Spacing between structures (m): 10
Depth of ditches/pits/dams (m): 0.6
Width of ditches/pits/dams (m): 0.7
Length of ditches/pits/dams (m): 50-80
Height of bunds/banks/others (m): 0.75

Construction material (earth): Most of the structural measures are made by earth involving excavation and embankment.

Construction material (stone): Stone is mainly used for demonstration.

Slope (which determines the spacing indicated above): 10%

If the original slope has changed as a result of the Technology, the slope today is: 8%

Lateral gradient along the structure: 0%

Vegetation is used for stabilisation of structures.

Change of land use type: The land after treatment is closed

Control / change of species composition: Grazing land changed to plantation and cropping

Other type of management: change of management / intensity level - Grazing land changed to plantation and cropping

4.2 Información general sobre el cálculo de insumos y costos

otra / moneda nacional (especifique):

Birr

Si fuera relevante, indique la tasa de cambio de dólares americanos a la moneda local (ej. 1 U$ = 79.9 Reales Brasileros): 1 U$ =:

8,5

4.3 Actividades de establecimiento

4.4 Costos e insumos necesarios para el establecimiento

Comentarios:

Duration of establishment phase: 24 month(s)

4.5 Actividades de establecimiento/ recurrentes

4.6 Costos e insumos necesarios para actividades de mantenimiento/ recurrentes (por año)

Comentarios:

Machinery/ tools: spade, hoe

Length and width of structure

4.7 Factores más determinantes que afectan los costos:

Describa los factores más determinantes que afectan los costos:

Factors affecting costs in this technology are the depth and width of gully, steepness of slope, planting and replanting of vegetative materials.

5.1 Clima

5.2 Topografía

Comentarios y especificaciones adicionales sobre topografía :

Slopes on average: Moderate (ranked 1, about 70%), gentle and rolling (both ranked 2) and flat (ranked 3)

5.3 Suelos

Si se halla disponible, adjunte una descripción completa de los suelos o especifique la información disponible, por ej., tipo de suelo, pH/ acidez de suelo, capacidad de intercambio catiónico, nitrógeno, salinidad, etc. :

Soil depth on average: Deep (Soils are very deep (75%))
Soil texture: Medium (fertile loam soils)
Soil fertility is medium (ranked 1) and high (ranked 2)
Topsoil organic matter: Medium (ranked 1, in the crop lands), low (ranked 2, degraded areas) and high (ranked 3, around the homestead)
Soil water storage capacity: Medium (ranked 1, on crop land) and high (ranked 2, on flat plateau land)

5.6 Las características de los usuarios de la tierra que aplican la Tecnología

Indique otras características relevantes de los usuarios de las tierras:

Population density: > 500 persons/km2
Annual population growth: 2% - 3%
5% of the land users are rich.
10% of the land users are average wealthy.
45% of the land users are poor.
40% of the land users are poor.
Off-farm income specification: Farmers who have SWC measures on their land produce more and hence have better financial income, which could allow them get involved in petty trade and other activities.
Level of mechanization: Animal traction (ranked 1, crop lands) and manual work ( ranked 2, homstead and gully lands)
Market orientation of cropland production system: subsistence (self-supply, maize) and mixed (subsistence/ commercial, sweet potato, teff, coffee)

5.7 Área promedio de la tierra usada por usuarios de tierra que aplican la Tecnología

6.1 Impactos in situ demostrados por la Tecnología

Impactos socioeconómicos

Producción

Ingreso y costos

Impactos socioculturales

Impactos ecológicos

Suelo

Otros impactos ecológicos

6.2 Impactos fuera del sitio demostrados por la Tecnología

6.4 Análisis costo-beneficio

¿Cómo se comparan los beneficios con los costos de establecimiento (desde la perspectiva de los usuarios de tierra)?

¿Cómo se comparan los beneficios con los costos de mantenimiento/ recurrentes (desde la perspectiva de los usuarios de tierra)?

6.5 Adopción de la Tecnología

Comentarios:

50 land user families have adopted the Technology with external material support

7.1 Métodos/ fuentes de información