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

Nome do projeto que facilitou a documentação/avaliação da Tecnologia (se relevante)

Book project: where the land is greener - Case Studies and Analysis of Soil and Water Conservation Initiatives Worldwide (where the land is greener)

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

Quando os dados foram compilados (no campo)?

01/07/2004

O/a compilador/a e a(s) pessoa(s) capacitada(s) aceitam as condições relativas ao uso de dados documentados através da WOCAT:

Sim

1.4 Declaração de sustentabilidade da tecnologia descrita

A tecnologia descrita aqui é problemática em relação a degradação da terra de forma que não pode ser declarada uma tecnologia de gestão sustentável de terra?

Não

1.5 Referência ao(s) questionário(s) sobre as abordagens da GST

2.1 Descrição curta da tecnologia

Definição da tecnologia:

A protective and productive high-input agroforestry system comprising multi-purpose ditches with bunds, live barriers of grass, contour ridging,
annual crops and fruit trees.

2.2 Descrição detalhada da tecnologia

Descrição:

The intensive agroforestry system (silvoagricultura) combines traditional and newly developed practices adapted to the area’s conditions. The idea is to concentrate cropping on a limited area, a plot of 0.4 ha per household, in a highly integrated, intensive and diversified continuous land use system, thereby integrating soil and water conservation - specifically avoiding traditional slash and burn practices.
Each ‘agroforestry plot’ comprises four to five 50 cm wide and 40 m long multipurpose ditches that are excavated along the contour, 6 to 12 m apart, depending on the slope. The ditches retain runoff water which infiltrates the soil, thus reducing erosion and improving soil moisture. They also act as compost ditches for all types of organic residues on the farm. Residues, enriched with manure (from chickens and guinea pigs) are tipped into the ditches, and within 8 to12 months this decomposes into a fertile medium for the cultivation of vegetables and other crops.

The main purpose is to increase and diversify production, and at the same time to protect natural resources and regenerate degraded areas.

Grass strips are planted on the earth bund on the upper side of the ditch for stabilisation of the structure, retention of runoff and capture of eroded sediment. The grass is cut several times a year to feed guinea pigs, which in turn recycle this into manure. On the lower side of the contour ditches, fruit trees and bananas are planted. Rows of multipurpose trees (mainly indigenous species) are planted around each agroforestry plot as a windbreak and for economic reasons: yielding fruit and timber. Between the structures, annual (and semi-perennial) crops are grown on hand-dug micro-terraces/ridges, again sited along the contour. Some farmers intercrop with legumes. Supportive technologies are protection of wells,
afforestation and, where possible, irrigation to enhance production. Production is based on principles of organic farming.High initial inputs of external manure are subsidised by the project (CISEC; see associated approach). The remainder of each farmer’s land is left to natural regeneration, reforested, or where needed, used for conventional cropping

The system is implemented on degraded and often steep slopes in subhumid areas where intensive rainfall and dry periods alternate. The land is officially owned communally (an ‘Indigenous Reserve’), but land use rights are individual. The region has a high population density: people are basically of indigenous origin and live in very poor conditions.

2.3 Fotos da tecnologia

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

2.7 Introdução da tecnologia

Especifique como a tecnologia foi introduzida:

• através de projetos/intervenções externas

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): - soil degradation/reduced soil fertility
- inappropriate soil management: monoculture, slash and burn, no or short fallow periods
- intensive rainfall on steep, unprotected slopes
- drought and wind erosion in dry season
- lack of economic resources
- high population density

Constraints of degraded land (before SWC)

3.3 Mais informações sobre o uso da terra

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

• Precipitação natural

Especifique:

Longest growing period in days: 240, Longest growing period from month to month: october untill may

3.4 Grupo de GST ao qual pertence a tecnologia

• Agrofloresta
• Solo/cobertura vegetal melhorada
• Medidas de curva de nível

3.5 Difusão da tecnologia

Comentários:

Total area covered by the SLM Technology is 1.2 m2.

3.6 Medidas de GST contendo a tecnologia

Comentários:

Type of agronomic measures: mixed cropping / intercropping, manure / compost / residues

3.7 Principais tipos de degradação da terra abordados pela tecnologia

Comentários:

Main causes of degradation: crop management (annual, perennial, tree/shrub) (inadequate management of land with steep slopes), overgrazing (prior degradation by landowner's livestock), industrial activities and mining (degradation of gold mining and other products), education, access to knowledge and support services, inter-generational subdivision of land (traditional custom)
Secondary causes of degradation: deforestation / removal of natural vegetation (incl. forest fires) (primary forest alomst disappeared), poverty / wealth (lack of capital, poverty and further agricultural employers)

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

4.1 Desenho técnico da tecnologia

4.2 Especificações técnicas/ explicações do desenho técnico

Detailed overview of the complex and intensive high-input, high output agroforestry system, usually limited to an area of 64 x 64 metres.
The agroforestry plots are bordered by trees of various species. Note the multipurpose ditches that serve as compost pits (lower ditch, right). Associated bunds are covered by grass (right).

Technical knowledge required for field staff / advisors: high
Technical knowledge required for land users: moderate
Main technical functions: control of raindrop splash, control of dispersed runoff: impede / retard, reduction of slope length, increase in organic matter, increase in nutrient availability (supply, recycling,…), increase / maintain water stored in soil
Secondary technical functions: reduction of slope angle, improvement of ground cover, increase of infiltration, sediment retention / trapping, sediment harvesting, reduction in wind speed

Vegetative measure: bananas
Vegetative material: F : fruit trees / shrubs
Vegetative measure: Vegetative material: F : fruit trees / shrubs
Slope (which determines the spacing indicated above): 16-30%

4.4 Atividades de implantação

	Atividade	Tipo de medida	Periodicidade
1.	1. Clear land (only slashing, no burning).	Estrutural	Beginning of rainy season (April)
2.	2. Determine contours with A-frame, spacing between structures dependson slope (4 m between ditches on steepest slopes, 14 m on gentle slopes).	Estrutural	Beginning of rainy season (April)
3.	3. Dig ditches, build bunds above, and dig holes for tree seedlings.	Estrutural	Beginning of rainy season (April)
4.	4. Establish micro-terraces/ridges (earth enriched with manure and residues:all structures along the contour).	Estrutural	During the dry season (June to September)
5.	6. Plant grass strips on the bund (for stabilisation of structure).	Vegetativo	During the dry season (June to September)
6.	7. Plant fruit/banana trees and legumes below the bunds.	Vegetativo	During the dry season (June to September)
7.	8. Plant fruit and timber trees along the boundaries of the agroforestry	Vegetativo	During the dry season (June to September)

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	220,0	220,0	100,0
Material vegetal	seeds	ha	1,0	15,0	15,0	5,0
Material vegetal	seedlings	ha	1,0	450,0	450,0	5,0
Fertilizantes e biocidas	compost/manure	ha	1,0	600,0	600,0	5,0
Custos totais para a implantação da tecnologia					1285,0

Comentários:

Duration of establishment phase: 12 month(s)

4.6 Atividades recorrentes/manutenção

	Atividade	Tipo de medida	Periodicidade/frequência
1.	5. Fill ditches with organic residues, adding earth mixed with manure.	Agronômico	During the dry season (June to September) / initial establishment
2.	4. Fill ditches with organic material, residues (after harvest), manure, etcand let it decompose.	Agronômico
3.	6. Dig out compost and spread	Agronômico	(beginning of growing season (September) /
4.	7. Apply additional fertilizer/manure	Agronômico	/ 3 times/year
5.	1. Cut grass ( grass used to feed guinea pigs).	Vegetativo	/4–6 times/year
6.	2. Control weeds	Vegetativo	/3 times/year
7.	5. Plant vegetables on fertile composted earth in ditches	Vegetativo	/dry season, optional
8.	8. Plant various crops: contour cropping, intercropping, integrate greenmanures (legumes).	Vegetativo
9.	3. Rebuild/repair structures	Estrutural	dry season

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	100,0	100,0	100,0
Fertilizantes e biocidas	biocides	ha	1,0	45,0	45,0	100,0
Custos totais para a manutenção da tecnologia					145,0

Comentários:

Machinery/ tools: machete, shovel, pickaxes, A-frame, planting stick (chuzo)
As an exception in this case study costs are calculated per plot and not per ha, since establishment is strictly limited
to an area of 0.4 ha per household. The remaining area is not treated but left for natural regeneration of vegetation or
conventional farming (if needed). Labour costs vary according to slope: a typical/average situation is given in the tables above (no further details available). Note that for comparison purposes with other technologies on a per hectare basis these costs would equate to US$ 3,135 for establishment and US$ 355 for maintenance.

5.1 Clima

5.2 Topografia

5.3 Solos

5.6 Características dos usuários da terra que utilizam a tecnologia

Indique outras características relevantes dos usuários da terra:

Off-farm income specification: most farmers depend economically entirely on their own crop 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:

• Comunitário/rural
• Indivíduo, não intitulado

Direitos do uso da terra:

• Comunitário (organizado)
• Indivíduo

6.1 Impactos no local mostrados pela tecnologia

Impactos socioeconômicos

Produção

Renda e custos

Impactos socioculturais

Impactos ecológicos

Solo

Biodiversidade: vegetação, animais

Clima e redução de riscos de desastre

6.2 Impactos externos mostrados pela tecnologia

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:

100% of land user families have adopted the Technology with external material support
260 land user families have adopted the Technology with external material support
There is a little trend towards spontaneous adoption of the Technology. There is a slight growing spontaneous adoption by land users living outside the approach area.

6.7 Pontos fortes/vantagens/oportunidades da tecnologia

Pontos fortes/vantagens/oportunidades na visão do/a compilador/a ou de outra pessoa capacitada
Rehabilitation of soil fertility over short term
Increased and permanent production
Increased food security and balanced diet
Adapted to very heterogeneous climatic and topographic conditions.
Protective-productive system: compromise between land capability class (forest) and cultivation needs

6.8 Pontos fracos, desvantagens/riscos da tecnologia e formas de superá-los

Pontos fracos/vantagens/riscos na visão do/a compilador/a ou de outra pessoa capacitada	Como eles podem ser superados?
Rigid design of the technology and fixed guidelines for implementation activities (pre-conditions for incentive support by project)	Give more flexibility to the farmers for individual modifications.
High demand for manual labour	Emphasis on group work, implement in dry season (when labour force is available at the household level).
High external inputs at the beginning (makes the technology very expensive)	Manure is needed to restore soil fertility in the short-term, land users pay the inputs in form of labour in the CISEC; revolving funds and composting ensure manure supplies on the long term.
Decreased pH (soil acidity)	Compensate by ecological improvements such as application of lime and ashes.

7.1 Métodos/fontes de informação

7.2 Referências às publicações disponíveis

Título, autor, ano, ISBN:

CISEC . Establecimiento de Lotes de Silvoagricultura. 1998.

Título, autor, ano, ISBN:

Gurtner M . Bodendegradierung und Bodenkonservierung inden Anden Kolumbiens – Eine Nachhaltigkeitsstudie im Rahmen des WOCAT-Programms, unpublished MSc Thesis, Science Faculty, University of Berne,Centre for Development and Environment. 1999.