Soil bund & Fanya Juu combined & vegetated [Etiópia]
- Criação:
- Atualização:
- Compilador/a: Daniel Danano
- Editor: –
- Revisores: Fabian Ottiger, Alexandra Gavilano
technologies_1078 - Etiópia
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Expandir tudo Recolher tudo1. Informação geral
1.2 Detalhes do contato das pessoas capacitadas e instituições envolvidas na avaliação e documentação da tecnologia
Especialista em GST:
Dibaba Israel
Rural land administration and natural resources management
Etiópia
Nome da(s) instituição(ões) que facilitou(ram) a documentação/ avaliação da Tecnologia (se relevante)
Food and Agriculture Organization of the United Nations (FAO) - Itália1.3 Condições em relação ao uso da informação documentada através de WOCAT
O/a compilador/a e a(s) pessoa(s) capacitada(s) aceitam as condições relativas ao uso de dados documentados através da WOCAT:
Sim
2. Descrição da tecnologia de GST
2.1 Descrição curta da tecnologia
Definição da tecnologia:
Soil bund and Fanya Juu constructed along the contour lines in microwatershed to conserve soil moisture and control erosion.
2.2 Descrição detalhada da tecnologia
Descrição:
Soil bund and Fanya Juu constructed in combination in a microwatershed for retaining maximum possible rain water in the soil by obstructing runoff water. Soil bunds are suitable for steeper slopes compared to fanya juu terraces which are more effective in gentle and flatter slopes.Land users in the SWC area prefer to combine the two physical structures for many reasons.One important factor is the cost of establishment, which is a function of labour needed for the construction. Fanya juu which means throwing soil upslope in Kiswahili intails throwing soil upslope which is more labours than throwing soil to downslope in the case of soil bunds. The other reason is that cultivated lands with fanya juu terraces are not easily accessed by free grazing livestock. The ditches placed in the downslope side of the embankment (fanya juu) is not easily vrossable but in soil bund although not that easy livestock are seen to trample over the embankment and jump the ditch which is placed in the upslope side. The other advantage farmers consider is that Fanya juu is more efficient in controlling runoff because the water that overtops the embankment is trapped by the ditch. Fanya Juu despite its high cost is preferred to be applied in combination with bunds because of the other advantage that it forms bench terrace rapidly.
Purpose of the Technology: The major purpose is to trap as much rain water as possible and also control soil erosion. Cultivated lands with with Soil bund and Fanya Juu have shown remarkable improvement in soil moistureavailability to crops compared to fields with no measures.
Establishment / maintenance activities and inputs: Soil bund and Fanya Juu are established in the same way by digging soil from and embanking it on a contour line. A contour line is laid out by following zero gradient. Once the soil is dug and embanked it is lightly compacted to avoid colapse. To further ensure bund stabilityuseful trees/shrubs are planted.The planted tree/shrub species are those offering multiuses such as fodder, fertility improving and fuelwood. Maintenance: It is done by repairing breaks and managing planted trees on the structure or by upgrading the structure by increasing its height and plant improved tree and fruit tree species.
Natural / human environment: The technology is suitable to semiarid climatic condition which have erratic rains and where crop production is limited by soil moisture stress. Soils in the technology area are susceptable to erosion and therefore the structure should be stablized by planting trees or grass species.
2.5 País/região/locais onde a tecnologia foi aplicada e que estão cobertos nesta avaliação
País:
Etiópia
Região/Estado/Província:
Oromia
Especificação adicional de localização:
Oromia
Comentários:
Total area covered by the SLM Technology is 15 km2.
Soil and water conservation activities started in the area about 30 years ago by the extension program of the Ministry of Agriculture. Systematically planned SWC measures, however, came into picture recently as Integrated microwatersheds planning & implementation approach was introduced.
Map
×2.6 Data da implementação
Caso o ano exato seja desconhecido, indique a data aproximada:
- menos de 10 anos atrás (recentemente)
2.7 Introdução da tecnologia
Especifique como a tecnologia foi introduzida:
- através de projetos/intervenções externas
Comentários (tipos de projeto, etc.):
Fanya juu is first practiced in Kenya and soil bunds are also exotic but experienced widely in Ethiopia over the past 30 years.
3. Classificação da tecnologia de GST
3.1 Principal/principais finalidade(s) da tecnologia
- Reduz, previne, recupera a degradação do solo
- Preserva ecossistema
3.2 Tipo(s) atualizado(s) de uso da terra onde a tecnologia foi aplicada
Terra de cultivo
- Cultura anual
- Cultura perene (não lenhosa)
- Cultura de árvores e arbustos
Cultivo anual - Especificar culturas:
- cereais - milho
- cereais - outros
- cereais - sorgo
- Legumes e leguminosas - feijão
- culturas oleaginosas - girassol, colza, outros
- teff, wheat
- local, elephant grass
- casea seame, leucanea, sesbania
Especifique:
Longest growing period in days: 210 Longest growing period from month to month: Apr - Nov
O cultivo entre culturas é praticado?
Sim
Em caso afirmativo, especifique quais são as culturas intercultivadas:
sorghum-teff-beans
Pastagem
Floresta/bosques
Comentários:
Major land use problems (compiler’s opinion): Soil erosion, productivity decline, degraded grazing and forest lands, soil moisture stress.
Major land use problems (land users’ perception): Poor crop production, high fertilizer cost, lack of grazing land.
3.3 O uso do solo mudou devido à implementação da Tecnologia?
O uso do solo mudou devido à implementação da Tecnologia?
- Sim (Por favor, preencha as perguntas abaixo com relação ao uso do solo antes da implementação da Tecnologia)
Pastagem
Pastagem intensiva/produção de forragem:
- Semiestabulação/sem pastagem
Floresta/bosques
- Plantação de árvores, reflorestamento
Produtos e serviços:
- Lenha
- Frutas e nozes
- Pastagem/Alimentação de folhas e brotos
Comentários:
cut and carry, weeding and cultivation and proper management.
3.4 Abastecimento de água
Abastecimento de água para a terra na qual a tecnologia é aplicada:
- Precipitação natural
3.5 Grupo de GST ao qual pertence a tecnologia
- Medidas de curva de nível
- Gestão de água de superfície (nascente, rio, lagos, mar)
3.6 Medidas de GST contendo a tecnologia
Medidas agronômicas
- A3: Tratamento da superfície do solo
A3: Diferenciar os sistemas de lavoura:
A 3.2: Reduced tillage (> 30% soil cover)
Comentários:
Main measures: structural measures
Secondary measures: vegetative measures, management measures
Type of agronomic measures: early planting, mixed cropping / intercropping, contour planting / strip cropping, legume inter-planting, manure / compost / residues, mineral (inorganic) fertilizers, minimum tillage, contour tillage
Type of vegetative measures: aligned: -contour, scattered / dispersed
3.7 Principais tipos de degradação da terra abordados pela tecnologia
Erosão do solo pela água
- Wt: Perda do solo superficial/erosão de superfície
- Wg: Erosão por ravinas/ravinamento
Deteriorização química do solo
- Cn: declínio de fertilidade e teor reduzido de matéria orgânica (não causado pela erosão)
Deteriorização física do solo
- Pk: quebra e ressecamento
Comentários:
Main type of degradation addressed: Wt: loss of topsoil / surface erosion
Secondary types of degradation addressed: Wg: gully erosion / gullying, Cn: fertility decline and reduced organic matter content, Pk: sealing and crusting
3.8 Redução, prevenção ou recuperação da degradação do solo
Especifique o objetivo da tecnologia em relação a degradação da terra:
- Reduzir a degradação do solo
- Recuperar/reabilitar solo severamente degradado
Comentários:
Secondary goals: rehabilitation / reclamation of denuded land
4. Especificações técnicas, implementação de atividades, entradas e custos
4.1 Desenho técnico da tecnologia
Especificações técnicas (relacionada ao desenho técnico):
Technical knowledge required for field staff / advisors: high
Technical knowledge required for land users: moderate
Main technical functions: control of dispersed runoff: impede / retard
Secondary technical functions: control of dispersed runoff: retain / trap, reduction of slope angle, reduction of slope length
Early planting
Material/ species: sorghum and maize
Quantity/ density: 80-100000
Remarks: broadcasting
Mixed cropping / intercropping
Material/ species: sorghum-teff-beans
Remarks: broadcasting
Contour planting / strip cropping
Material/ species: maize, sunflower
Agronomic measure: mixed cropping / intercropping
Material/ species: wheat-safflower
Remarks: broadcasting
Legume inter-planting
Remarks: field crops (safflower sunflower)
Manure / compost / residues
Remarks: at homesteads
Mineral (inorganic) fertilizers
Material/ species: Dap, Urea
Quantity/ density: 1.5 q/ha
Minimum tillage
Remarks: at pilot level for maize planting
Contour tillage
Remarks: For cereal crops on terraced cultivated lands
Aligned: -contour
Vegetative material: T : trees / shrubs
Number of plants per (ha): 400
Vertical interval between rows / strips / blocks (m): 1
Scattered / dispersed
Vegetative material: T : trees / shrubs
Number of plants per (ha): 50-100
Trees/ shrubs species: casea seame, leucanea, sesbania
Grass species: local, elephant grass
Slope (which determines the spacing indicated above): 5.00%
If the original slope has changed as a result of the Technology, the slope today is (see figure below): 2.00%
Gradient along the rows / strips: 1.00%
Waterway
Depth of ditches/pits/dams (m): 1.5m
Width of ditches/pits/dams (m): 3m
Length of ditches/pits/dams (m): 500m
Height of bunds/banks/others (m): 1.5m
Width of bunds/banks/others (m): 3m
Length of bunds/banks/others (m): 3m
Bund/ bank: level
Spacing between structures (m): 1.5m
Depth of ditches/pits/dams (m): 0.5m
Width of ditches/pits/dams (m): 1m
Length of ditches/pits/dams (m): 150m
Height of bunds/banks/others (m): 0.65m
Width of bunds/banks/others (m): 1.5m
Length of bunds/banks/others (m): 150m
Structural measure: diversion ditch / cut-off drain
Spacing between structures (m): 200m
Depth of ditches/pits/dams (m): 0.75m
Width of ditches/pits/dams (m): 120m
Length of ditches/pits/dams (m): 150m
Height of bunds/banks/others (m): 0.75m
Width of bunds/banks/others (m): 1.2m
Length of bunds/banks/others (m): 150m
Construction material (earth): soil bund and fanya juu
Construction material (stone): waterways and diversions
Slope (which determines the spacing indicated above): 5%
If the original slope has changed as a result of the Technology, the slope today is: 2%
Lateral gradient along the structure: 0%
For water harvesting: the ratio between the area where the harvested water is applied and the total area from which water is collected is: 1:1
Vegetation is used for stabilisation of structures.
Change of land use type: cut and carry, weeding and cultivation and proper management.
Other type of management: site guarding - 0vergrazed lands are closed for establishing vegetation.
4.2 Informação geral em relação ao cálculo de entradas e custos
Outro/moeda nacional (especifique):
Birr
Se for relevante, indique a taxa de câmbio do USD para moeda local (por exemplo, 1 USD = 79,9 Real): 1 USD =:
8,6
Indique a média salarial da mão-de-obra contratada por dia:
0.80
4.3 Atividades de implantação
Atividade | Periodicidade (estação do ano) | |
---|---|---|
1. | collecting seeds | dry season |
2. | seedling production | dry season |
3. | seedling planting | rainy season |
4. | direct sowing of seeds | rainy season |
5. | contour marking | dry season |
6. | embanking soils | dry season |
7. | light compaction | dry season |
8. | fencing | dry season |
4.4 Custos e entradas necessárias para a implantação
Especifique a entrada | Unidade | Quantidade | Custos por unidade | Custos totais por entrada | % dos custos arcados pelos usuários da terra | |
---|---|---|---|---|---|---|
Mão-de-obra | Labour | ha | 1,0 | 199,0 | 199,0 | 20,0 |
Equipamento | Tools | ha | 63,0 | 5,0 | ||
Material vegetal | Seeds | ha | 1,0 | 8,0 | 8,0 | 100,0 |
Custos totais para a implantação da tecnologia | 207,0 | |||||
Custos totais para o estabelecimento da Tecnologia em USD | 24,07 |
Comentários:
Duration of establishment phase: 84 month(s)
4.5 Atividades recorrentes/manutenção
Atividade | Periodicidade/frequência | |
---|---|---|
1. | tillage /primary) | |
2. | tillage/secondary/ | |
3. | seedbed preartaion | |
4. | planting/sowing | |
5. | Weeding | |
6. | cultivation | |
7. | weeding and cultivation | after rains /annual |
8. | replanting | during rains /annual |
9. | repair breaks | after rains/as required |
10. | upgrading | dry season/annual |
11. | upgrading and repairing of breaks | before rains / annual |
4.6 Custos e entradas necessárias pata a manutenção/atividades recorrentes (por ano)
Especifique a entrada | Unidade | Quantidade | Custos por unidade | Custos totais por entrada | % dos custos arcados pelos usuários da terra | |
---|---|---|---|---|---|---|
Mão-de-obra | Labour | ha | 1,0 | 13,0 | 13,0 | 100,0 |
Custos totais para a manutenção da tecnologia | 13,0 | |||||
Custos totais de manutenção da Tecnologia em USD | 1,51 |
Comentários:
length of terrace, number of trees planted
4.7 Fatores mais importantes que afetam os custos
Descreva os fatores mais determinantes que afetam os custos:
slope, soil condition labour availability
5. Ambiente natural e humano
5.1 Clima
Precipitação pluviométrica anual
- <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
Especifique a média pluviométrica anual em mm (se conhecida):
800,00
Zona agroclimática
- Semiárido
Charachterized by high tempretures, windy and soil moisture stress
5.2 Topografia
Declividade média:
- Plano (0-2%)
- Suave ondulado (3-5%)
- Ondulado (6-10%)
- Moderadamente ondulado (11-15%)
- Forte ondulado (16-30%)
- Montanhoso (31-60%)
- Escarpado (>60%)
Formas de relevo:
- Planalto/planície
- Cumes
- Encosta de serra
- Encosta de morro
- Sopés
- Fundos de vale
Zona de altitude:
- 0-100 m s.n.m.
- 101-500 m s.n.m.
- 501-1.000 m s.n.m.
- 1.001-1.500 m s.n.m.
- 1.501-2.000 m s.n.m.
- 2.001-2.500 m s.n.m.
- 2.501-3.000 m s.n.m.
- 3.001-4.000 m s.n.m.
- > 4.000 m s.n.m.
Comentários e outras especificações sobre a topografia:
Landforms: Hill slopes (are largley cultivated and some grazing lands, ranked 1), valley floors (are totally cultivated lands and have potentials if suffiecent rains are received, ranked 2) and mountain slopes (are grazing and shrub lands. Valley floors depend for runoff water from this, ranked 3)
Slopes on average: Flat (bunds were built before but silted up due to soil burial, ranked 1), rolling (ranked 2) as well as gentle and moderate (both ranked 3)
5.3 Solos
Profundidade do solo em média:
- Muito raso (0-20 cm)
- Raso (21-50 cm)
- Moderadamente profundo (51-80 cm)
- Profundo (81-120 cm)
- Muito profundo (>120 cm)
Textura do solo (solo superficial):
- Médio (limoso, siltoso)
Matéria orgânica do solo superficial:
- Médio (1-3%)
- Baixo (<1%)
Caso disponível anexe a descrição completa do solo ou especifique as informações disponíveis, p. ex. tipo de solo, PH/acidez do solo, nitrogênio, capacidade de troca catiônica, salinidade, etc.
Soil depth on average: Moderately deep (soils on gentle slopes where the technology is dominantly practiced, ranked 1), shallow (soils on hillslopes are predominantly , ranked 2) and deep (soils in the valley floors are moderately deep to deep, ranked 3)
Soil texture is medium (on gentle slopes and valley floors, ranked 1) and coarse/light (on hilly slopes and gentle slopes, ranked 2) and fine/heavy (ranked 3)
Soil fertility is very low (soils that are continuously cropped on gentle slopes, ranked 1), low (soils on steep slopes because of erosion, ranked 2) and medium (soils on valley floors because of deposited soils, ranked 3)
Topsoil organic matter is low (soils of shallow depth on hillslopes, ranked 1) and medium (soils on valley floors, ranked 2)
Soil drainage/infiltration is good
Soil water storage capacity is low (shallow soils on the hillslopes, ranked 1) and medium (soils in the valley floors, ranked 2)
5.6 Características dos usuários da terra que utilizam a tecnologia
Orientação de mercado do sistema de produção:
- Subsistência (autoabastecimento)
- misto (subsistência/comercial)
Rendimento não agrícola:
- 10-50% de toda renda
Nível relativo de riqueza:
- Média
- Rico
Nível de mecanização:
- Trabalho manual
Indique outras características relevantes dos usuários da terra:
Population density: 100-200 persons/km2
Annual population growth: 2% - 3%
5% of the land users are rich (have means to pay labour).
35% of the land users are average wealthy (get organized in groups for labour share).
60% of the land users are poor (are beneficiaries of food for work).
Off-farm income specification: land users who have implemented SWC measures have better income compared with those who have not implemented SWC.
Level of mechanization: Manual labour (land is tilled by oxen plough)
Market orientation cropland: Subsistence (poor and average farmers produced for themselves, ranked 1) and mixed (better of and rich produce food for own consumption and also market, ranked 2)
5.7 Área média de terrenos utilizados pelos usuários de terrenos que aplicam a Tecnologia
- < 0,5 ha
- 0,5-1 ha
- 1-2 ha
- 2-5 ha
- 5-15 ha
- 15-50 ha
- 50-100 ha
- 100-500 ha
- 500-1.000 ha
- 1.000-10.000 ha
- > 10.000 ha
Comentários:
Most land users have land holding less than 1 hectar and fragmented
5.8 Propriedade de terra, direitos de uso da terra e de uso da água
Propriedade da terra:
- Estado
Direitos do uso da terra:
- Acesso livre (não organizado)
- Indivíduo
6. Impactos e declarações finais
6.1 Impactos no local mostrados pela tecnologia
Impactos socioeconômicos
Produção
Produção agrícola
Comentários/especificar:
due to soil moisture improvement
Produção de forragens
Comentários/especificar:
bund stablization and area enclosure
Qualidade da forragem
Comentários/especificar:
bund stablization and area enclosure
Renda e custos
Rendimento agrícola
Comentários/especificar:
homesteads intensification
Impactos socioculturais
Instituições comunitárias
Comentários/especificar:
farmers' groups for development work getting strengthened
Conhecimento de GST/ degradação da terra
Comentários/especificar:
land users have developed skills in marking contours and constructing bunds.
Impactos ecológicos
Ciclo hídrico/escoamento
Escoamento superficial
Quantidade anterior à GST:
50
Quantidade posterior à GST:
0
Solo
Umidade do solo
Comentários/especificar:
because of structural measures
Perda de solo
Comentários/especificar:
integrated measures
Outros impactos ecológicos
Soil fertility
Comentários/especificar:
leguminous plants and compost application
6.2 Impactos externos mostrados pela tecnologia
Cheias de jusante
Comentários/especificar:
because of reduced runoff on uphills
Sedimentação a jusante
Comentários/especificar:
reduce soil erosion
6.4 Análise do custo-benefício
Como os benefícios se comparam aos custos de implantação (do ponto de vista dos usuários da terra)?
Retornos a curto prazo:
levemente negativo
Retornos a longo prazo:
positivo
Como os benefícios se comparam aos custos recorrentes/de manutenção(do ponto de vista dos usuários da terra)?
Retornos a curto prazo:
levemente positivo
Retornos a longo prazo:
positivo
6.5 Adoção da tecnologia
De todos aqueles que adotaram a Tecnologia, quantos o fizeram espontaneamente, ou seja, sem receber nenhum incentivo/ pagamento material?
- 0-10%
Comentários:
95% of land user families have adopted the Technology with external material support
Comments on acceptance with external material support: estimates
5% of land user families have adopted the Technology without any external material support
Comments on spontaneous adoption: estimates
There is a moderate trend towards spontaneous adoption of the Technology
Comments on adoption trend: Spontaneous adoption is being observed who are average in wealth in particular and in families who have adequate awarness of SWC measures in general.
6.7 Pontos fortes/vantagens/oportunidades da tecnologia
Pontos fortes/vantagens/oportunidades na visão do/a compilador/a ou de outra pessoa capacitada |
---|
Structures do not hinder farm operations because they are widely spaced. How can they be sustained / enhanced? Practice inter bund measures that trap runoff efficiently. |
Fodder is grown on bunds and there is no area lost How can they be sustained / enhanced? Strengthening the introduction of high yielding fodder species. |
Homestead intensification activities are integrated with the SWC technology. How can they be sustained / enhanced? Embrace more land in the program |
Crop, fodder and wood production increased because of plantation, structures and area enclosures. How can they be sustained / enhanced? Use more efficient techniques and inputs that enhance soil fertility. |
Crop production has increased because of improved soil moisture avalability. |
6.8 Pontos fracos, desvantagens/riscos da tecnologia e formas de superá-los
Pontos fracos/desvantagens/riscos na visão do usuário da terra | Como eles podem ser superados? |
---|---|
are labour consuming | organize farmers in groups and undertake repairs before the damage gets more serious |
require frequent maintenance |
Pontos fracos/vantagens/riscos na visão do/a compilador/a ou de outra pessoa capacitada | Como eles podem ser superados? |
---|---|
require regular maintenance | make quality structures and avoid livestock interference |
require closer protection and guarding | practice more cut and carry |
7. Referências e links
7.1 Métodos/fontes de informação
Links e módulos
Expandir tudo Recolher tudoLinks
Não há links
Módulos
Não há módulos