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)

Food and Agriculture Organization of the United Nations (FAO) - Itália

1.3 Condições em relação ao uso da informação documentada através de WOCAT

Quando os dados foram compilados (no campo)?

02/06/2011

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

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

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

3.3 Mais informações sobre o uso da terra

Abastecimento de água para a terra na qual a tecnologia é aplicada:

• Precipitação natural

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

3.4 Grupo de GST ao qual pertence a tecnologia

• Medidas de curva de nível

3.5 Difusão da tecnologia

Especifique a difusão da tecnologia:

• Uniformemente difundida numa área

Caso a tecnologia seja uniformemente difundida numa área, indique a área coberta aproximada:

• 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:

3.6 Medidas de GST contendo a tecnologia

3.7 Principais tipos de degradação da terra abordados pela tecnologia

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

4.2 Especificações técnicas/ explicações do desenho técnico

Technical knowledge required for field staff / advisors: moderate

Technical knowledge required for land users: moderate

Main technical functions: reduction of slope length

Secondary technical functions: control of concentrated runoff: retain / trap, reduction of slope angle, increase of infiltration, increase / maintain water stored in soil

Early planting
Material/ species: sorghum, maize, chat
Remarks: on contour and row planting

Mixed cropping / intercropping
Material/ species: maize-haricot beans, chat-beans
Remarks: row planting and broadcasting

Contour planting / strip cropping
Material/ species: land tillage and cultivation
Remarks: contour cultivation

Legume inter-planting
Remarks: contour

Manure / compost / residues
Material/ species: animal dung and crop residue farming
Quantity/ density: 30-40 t/ha
Remarks: applied in between rows

Mineral (inorganic) fertilizers
Material/ species: chemical fertilizers (DAP and Urea)
Remarks: broadcasting

Contour tillage
Remarks: along the contour and made by oxen plough

Aligned: -contour
Vegetative material: T : trees / shrubs, F : fruit trees / shrubs
Number of plants per (ha): 400-500
Vertical interval between rows / strips / blocks (m): 1
Spacing between rows / strips / blocks (m): 10 m
Width within rows / strips / blocks (m): 3 x 3

Vegetative measure: aligned: contour
Vegetative material: G : grass
Number of plants per (ha): 5000
Vertical interval between rows / strips / blocks (m): 1
Spacing between rows / strips / blocks (m): 110 m
Width within rows / strips / blocks (m): 0.3 x 0.3

Vegetative measure: Vegetative material: G : grass

Vegetative measure: Vegetative material: G : grass

Vegetative measure: Vegetative material: G : grass

Trees/ shrubs species: grevillea, cordia

Fruit trees / shrubs species: guava, avocado

Grass species: elephant, phalaris

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): 3.00%

Gradient along the rows / strips: 0.00%

4.4 Atividades de implantação

	Atividade	Tipo de medida	Periodicidade
1.	seed collection	Vegetativo	dry season
2.	seedling production	Vegetativo	dry season
3.	seedling planting	Vegetativo	during rains
4.	weeding and cultivation	Vegetativo	during rains

4.5 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	125,0	125,0
Equipamento	Animal traction	ha	1,0	46,6	46,6
Equipamento	Tools	ha	1,0	5,5	5,5
Material vegetal	Seeds	ha	1,0	2,8	2,8
Material vegetal	Seedlings	ha	1,0	30,0	30,0
Fertilizantes e biocidas	Fetilizer	ha	1,0	33,3	33,3
Custos totais para a implantação da tecnologia					243,2

Comentários:

Duration of establishment phase: 60 month(s)

4.6 Atividades recorrentes/manutenção

	Atividade	Tipo de medida	Periodicidade/frequência
1.	primary tillage	Agronômico	onset of rains
2.	secondary tillage and seed bed preparation	Agronômico	in the middle of early rains and main rains
3.	weeding and cultivation	Agronômico	after germination
4.	thinning	Vegetativo	after rains

4.7 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	12,5	12,5
Equipamento	Tools	ha	1,0	0,5	0,5
Material vegetal	Seedlings	ha	1,0	3,0	3,0
Fertilizantes e biocidas	Fertilizer	ha	1,0	33,3	33,3
Custos totais para a manutenção da tecnologia					49,3

Comentários:

length of stone faced bunds and the number of trees planted

4.8 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 Média da área de terra própria ou arrendada por usuários da terra que utilizam 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