1.2 Detalhes do contato das pessoas capacitadas e instituições envolvidas na avaliação e documentação da tecnologia

Nome da(s) instituição(ões) que facilitou(ram) a documentação/ avaliação da Tecnologia (se relevante)

1.3 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

2.1 Descrição curta da tecnologia

Definição da tecnologia:

Stone faced terraces are commonly constructed on cultivated lands. These are structural measural measures placed along the contour to control soil erosion and trap runoff.

2.2 Descrição detalhada da tecnologia

Descrição:

Stone-faced soil bund is constructed during the dry period when the field is free from crops (after crop harvest). Soils in the woreda are light and are easily eroded. A contour line is marked on the ground first and a foundation placing stones is dug. The stone wall is placed in the foundation and the wall is raised until it attains a height of 0.50m at minimum. Then earth is dug on the upslope side by removing soil from it and make an embankment of soil on the upper side to support the stone wall. In the same way the stone is supported by the soil from the upper side. The embanked soil is lightly compacted to avoid collapse. The objective is to control concentrated runoff from causing soil erosion and to retain as much rainwater as possible in the soil for mazimizing crop production. Livestock are not let on the terraced land. Most land users feed their animals tethered. The bund is then stablized by planting grass. The most commonly used grasses for stablizing bunds in the area are phalaris and elephant grass. The purpose is to control runoff and soil erosion from cultivated lands. Grass is planted to stablize the bund and also help in providing fodder for animals. Some land users stablize the stone-faced bunds by planting fruit trees. Fruit trees are often planted at the homesteads for better management and protection. The income obtaoned from fruit trees is high. Sorghum fields are predominantly treated by stone-faced bunds while chat and coffee fields are treated by ridges and basins. Frequent maintenance and upgrading is required until bench is formed. Currently most of the fields in the woreda have a properly stablized terraces and as a result loss of soil and water by erosion is decreasing. Maintenance is done continuously until the structure stablizes well and inparticular after heavy rains, every time after tillage and cropping. The technology is suitable in areas where stones are avialable and soils are light.

2.5 País/região/locais onde a tecnologia foi aplicada e que estão cobertos nesta avaliação

País:

Etiópia

Região/Estado/Província:

Oromia National Regional State

Especificação adicional de localização:

Tullo

Especifique a difusão da tecnologia:

• Uniformemente difundida numa área

Se a área precisa não for conhecida, indicar a área aproximada coberta:

• 100-1.000 km2

Comentários:

Total area covered by the SLM Technology is 80 km2.

Information obtaned from annual activities and achievements reports. But at present the total technology area is more than the amount shown here and estimate is indicated as follows:

Map

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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.):

The technology was initially introduced by the extension implementation project of the Ministry of Agriculture and modified in the process of implementing the National Soil and Water Conservation Program in the country in the various phases of the land rehabilitation and afforestation project of the MERETproject (MOARD/WFP)

3.1 Principal/principais finalidade(s) da tecnologia

• Melhora a produção
• Reduz, previne, recupera a degradação do solo

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 - sorgo
• Legumes e leguminosas - feijão

• teff

• chat, elephant grass, phalaris

Cultivo de árvores e arbustos - Especificar culturas:

• abacate
• café, cultivado ao ar livre
• frutas, outros
• manga, mangostão, goiaba

• grevillea, cordia

Número de estações de cultivo por ano:

• 2

Especifique:

Longest growing period in days: 240 Longest growing period from month to month: Apr - NovSecond longest growing period in days: 150Second longest growing period from month to month: Feb - Jun

O cultivo entre culturas é praticado?

Sim

Em caso afirmativo, especifique quais são as culturas intercultivadas:

maize-haricot beans, chat-beans

Pastagem

Pastagem intensiva/produção de forragem:

• Semiestabulação/sem pastagem

Comentários:

Major land use problems (compiler’s opinion): Land use problem is the result mainly of high population growth, improper land use and poor farming practices. Land not suitable for cultivation is put under use. Steepslopes on hillsides and mountain escarpments are cultivated. These have resulted in high runoff and sediment movment from the upper catchments which are dominantly devoid of vegetation and no conservation measures practiced.

Major land use problems (land users’ perception): land shortage, loss of fertility and soil erosion on lands with no conservation measures.

Cut-and-carry/ zero grazing: grazing land is seriously shriniking owing

Type of cropping system and major crops comments: sorghum-beans or chat - sorghum, maize-beans

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

3.6 Medidas de GST contendo a tecnologia

3.7 Principais tipos de degradação da terra abordados pela tecnologia

Erosão do solo pela água

• Wt: Perda do solo superficial/erosão de superfície

Deteriorização química do solo

• Cn: declínio de fertilidade e teor reduzido de matéria orgânica (não causado pela erosão)

Comentários:

Main type of degradation addressed: Wt: loss of topsoil / surface erosion

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

3.8 Redução, prevenção ou recuperação da degradação do solo

Especifique o objetivo da tecnologia em relação a degradação da terra:

• Prevenir degradação do solo
• Reduzir a degradação do solo

Comentários:

Main goals: mitigation / reduction of land degradation

Secondary goals: prevention of land degradation

4.1 Desenho técnico da tecnologia

4.3 Atividades de implantação

4.4 Custos e entradas necessárias para a implantação

Comentários:

Duration of establishment phase: 60 month(s)

4.5 Atividades recorrentes/manutenção

4.6 Custos e entradas necessárias pata a manutenção/atividades recorrentes (por ano)

Comentários:

length of stone faced bunds and the number of trees planted

4.7 Fatores mais importantes que afetam os custos

Descreva os fatores mais determinantes que afetam os custos:

Slope: In steep slopes terraces get closer and the length of terrace per unit area /hectar/ increases and this increases the cost of construction. On soils of shallow soils digging becomes tough and this leads to increased costs

5.1 Clima

5.2 Topografia

Comentários e outras especificações sobre a topografia:

Altitudinal zone: 1501-2000 m a.s.l. (dominant elevation, ranked 1) and 1,001-1,500 m a.s.l. (very small area, ranked 2)
Landforms: Mountain slopes (the dominant landform, ranked 1), foot slopes (dominanatly cultivated lands, ranked 2) and valley floor (mostly cultivated, ranked 2)
Slopes on average: Hilly (planted forestsand shrublands with degraded natural forests, ranekd 1), Rolling ( cultivated lands with perennial crops, ranked 2), moderate (cultivated lands with cereals (sorghum and maize) ranked 3), getnle (cultivated with teff and sweet potato, ranked 3)

5.3 Solos

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: Shallow (soils on mountain slopes , ranked 1), moderately deep (soils on foot slopes, ranked 2), deep ( soils on valley floors, ranked 3) and very deep (soils around homesteads, ranked 3)
Soil texture: Coarse/light (mountain slopes and foot slopes, ranked 1), medium (foot slopes, ranked 2) and fine/heavy (valley floor, ranked 3)
Soil fertility is low (mountain slopes, ranked 1), medium (foot slopes, ranked 2) and high (valley floor, ranked 3)
Topsoil organic matter is medium (impressions: on valley floors of cultivated lands, ranked 1) and low ( impressions:mountain slopes, ranked 2)
Soil drainage/infiltration is good (most of the mountain slopes and foot slopes, ranked 1) and medium (on valley floors, ranked 2)
Soil water storage capacity is low (on mountain slopes because of shallow soils, ranked 1) and medium (on foot slopes and valley floors, ranked 2)

5.6 Características dos usuários da terra que utilizam a tecnologia

Indique outras características relevantes dos usuários da terra:

Population density: 200-500 persons/km2
Annual population growth: 2% - 3%
(The rich hire labour).
(could get orgainzed in groups for labour sahring).
Off-farm income specification: The rich and average land users get engaged in other non farm activities because they have financial means
Level of mechanization: Animal traction (cereal crop fields are ploughed and cultivated by oxen plough, ranked 1) and manual work (chat and coffee plants are manually cultivated by hoe, ranked 2)
Market orientation of grazing land: Subsistence (self-supply). Animals are predominanatly kept for draft power requiremen and milk production.

5.7 Área média de terrenos utilizados pelos usuários de terrenos que aplicam a Tecnologia

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

6.1 Impactos no local mostrados pela tecnologia

Impactos socioeconômicos

Produção

Renda e custos

Impactos socioculturais

Impactos ecológicos

Ciclo hídrico/escoamento

Solo

6.4 Análise do custo-benefício

Como os benefícios se comparam aos custos de implantação (do ponto de vista dos usuários da terra)?

Como os benefícios se comparam aos custos recorrentes/de manutenção(do ponto de vista dos usuários da terra)?

6.5 Adoção da tecnologia

Comentários:

90 % of land user families have adopted the Technology with external material support

1150 land user families have adopted the Technology with external material support

Comments on acceptance with external material support: estimates

10% of land user families have adopted the Technology without any external material support

Comments on spontaneous adoption: estimates

7.1 Métodos/fontes de informação