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

Nombre del proyecto que financió 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

1.5 Referencia al (los) Cuestionario(s) de Enfoques MST (documentados usando WOCAT)

Promoting farmer innovation [Uganda]

Identification of farmer innovators in SWC and water harvesting, and using them as focal points for visits from other farmers to spread the practices and stimulate the process of innovation.

• Compilador: Kithinji Mutunga
• 12/01/2009 00:00

2.1 Breve descripción de la Tecnología

Definición de la Tecnología:

Weeds and crop residues laid in bands across the slope of annual crop fields to conserve soil and water, and to incorporate organic matter into the soil after decomposition.

2.2 Descripción detallada de la Tecnología

Descripción:

Trash lines of organic material across the slope constitute a traditional land husbandry practice in south-west Uganda. These traditional, ‘unimproved’, trash lines are beneficial, but even better is an improved version designed through Participatory Technology Development (PTD). Improved trash lines are smaller, closer spaced, and of longer duration than the traditional type. They are more effective in controlling runoff and maintaining soil fertility.
All trash lines (improved and traditional) are composed of cereal stover (straw) and weeds that are collected during primary cultivation (hand hoeing), and heaped in strips along the approximate contour. Creeping grasses should not be used in trash lines: they can alternatively be decomposed in bundles, and then used as mulch in nearby banana plantations. Trash lines are used in hillside fields where annual crops, including sorghum, finger millet, beans and peas, are grown. The recommended spacing between the improved trash lines is 5-10 m, depending
on the slope: the steeper the closer. The amount of material available determines the cross section of each trash line (typically ±0.5 m wide and ±0.3 m high). Improved trash lines are left in place for four seasons (there are two seasons a year in Kabale) before they are dug into the soil. Much of the material used has, by this time, decomposed or been eaten by termites. Through incorporation into the topsoil, they improve soil fertility acting effectively as ‘mobile compost strips’. New trash lines are then established between the sites of the former lines. Upkeep comprises removal of weeds that sprout within the lines - before they set seed - and the addition of more trash during each new cultivation and weeding cycle.
Improved trash lines are multipurpose in retarding dispersed runoff while, as discussed, maintaining soil fertility. They are a low-cost option for soil and water conservation. However, they need to be complemented by other measures on the steeper slopes. The climate in this part of Uganda is subhumid, with a bimodal rainfall regime, and average annual rainfall of around 800 mm. Hill tops are used for grazing, the lower slopes are cultivated with annual crops (where the trash lines are found) and the valleys are dedicated to bananas and other cash crops. Families are large: 8-10 persons, and the population density is high, at nearly 200 persons/km2.

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:

Uganda

Región/ Estado/ Provincia:

Kabale

Especifique más el lugar :

Kabale district

Especifique la difusión de la Tecnología:

• distribuida parejamente sobre un área

Si se desconoce el área precisa, indique el área aproximada cubierta:

• 0.1-1 km2

Comentarios:

Total area covered by the SLM Technology is 0.25 km2.

it is an indeginous technology. Widely used in various fields and at different slopes.

Map

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2.6 Fecha de la implementación

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

• hace más de 50 años atrás (tradicional)

2.7 Introducción de la Tecnología

Especifique cómo se introdujo la Tecnología:

• como parte de un sistema tradicional (> 50 años)

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

• mejorar la producción
• reducir, prevenir, restaurar la degradación del suelo
• adaptarse al cambio climático/ extremos climáticos y sus impactos

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

Tierras cultivadas

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

Cosechas anuales - Especifique cultivos:

• cereales - mijo
• cereales - sorgo
• leguminosas y legumbres - frijoles
• leguminosas y legumbres - arvejas

Cultivos perennes (no maderables) - Especifique cultivos:

• banana/plátano/abacá

• Eucalyptus

Número de temporadas de cultivo por año:

• 2

Especifique:

Longest growing period in days: 180 Longest growing period from month to month: Feb - Jul Second longest growing period in days: 120 Second longest growing period from month to month: Sep - Jan

Comentarios:

Major land use problems (compiler’s opinion): Continuous cultivation of annual crops on slopes prone to erosion, with little or no restitution of fertility through manures
or fertilizers.

Major land use problems (land users’ perception): continous cultivation without fallow due to small sizes of farms

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

• cobertura de suelo/ vegetal mejorada
• 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

deterioro químico del suelo

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

degradación del agua

• Ha: aridificación

Comentarios:

Main type of degradation addressed: Wt: loss of topsoil / surface erosion, Cn: fertility decline and reduced organic matter content

Main causes of degradation: other human induced causes (specify) (lack of communication), education, access to knowledge and support services (lack of spread of knowledge)

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: mitigation / reduction of land degradation

Secondary goals: prevention of land degradation

4.1 Dibujo técnico de la Tecnología

Especificaciones técnicas (relacionadas al dibujo técnico):

Trash lines without crops (left)
and with crops (beans; right).
The insert shows the stages of the technology: regularly spaced trash lines are kept place for four seasons (1); then decompose over time and are incorporated into the soil (2); and finally new trash lines are placed between the previous strips (3).

Technical knowledge required for field staff / advisors: low

Technical knowledge required for land users: low

Main technical functions: control of dispersed runoff: impede / retard, increase of infiltration, increase in soil fertility

Secondary technical functions: control of dispersed runoff: retain / trap, increase in organic matter, improvement of soil structure, sediment harvesting

Agronomic measure: mulching, trash lines
Material/ species: weed residue, sorghum
Remarks: along contour

Autor:

Mats Gurtner

4.2 Información general sobre el cálculo de insumos y costos

otra / moneda nacional (especifique):

Uganda Shillings

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

1000,0

4.4 Costos e insumos necesarios para el establecimiento

Comentarios:

Duration of establishment phase: 36 month(s)

4.5 Actividades de establecimiento/ recurrentes

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

Comentarios:

Machinery/ tools: hand hoe

These figures are approximate, representing a typical situation with 1,500 running metres of improved trash lines, per hectare, at a spacing of 7 m apart on a 10% slope. The 1st year (first and second seasons) involves more work than the
2nd year (third and fourth seasons): the figure given is an annual average of all work associated with trash lines. The costs of the traditional, larger and wider spaced trash lines are about 50% more than these given above - because trash has to be carried further.

4.7 Factores más determinantes que afectan los costos:

Describa los factores más determinantes que afectan los costos:

Labour, need to collect and heap the trashlines material in lines above the slope

5.1 Clima

5.2 Topografía

Comentarios y especificaciones adicionales sobre topografía :

Slopes on average: Also rolling and hilling (both ranked 2)

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 texture: Medium (the trash material modifies the organic matter content of the areas applied)
Soil fertility: Medium (ranked 1) and low (ranked 2)
Soil drainage/infiltration: Medium
Soil water storage capacity: Low (ranked 1) and medium (ranked 2)

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

Indique otras características relevantes de los usuarios de las tierras:

1% of the land users are very rich and own 5% of the land.
5% of the land users are rich and own 10% of the land.
24% of the land users are average wealthy and own 50% of the land.
55% of the land users are poor and own 25% of the land.

Off-farm income specification: some farmers are involved in trade with nearby Rwanda and there are also a number of families who receive remittances from family members who work in Kabale or as far away as Kampala

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

5.8 Tenencia de tierra, uso de tierra y derechos de uso de agua

Tenencia de tierra:

• individual, sin título

Derechos de uso de tierra:

• comunitarios (organizado)
• individual

6.4 Análisis costo-beneficio

¿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:

30 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: the technology is indeginous. There is some evidence of growing spontaneous adoption.

6.7 Fuerzas/ ventajas/ oportunidades de la Tecnología

6.8 Debilidades/ desventajas/ riesgos de la Tecnología y formas de sobreponerse a ellos

7.1 Métodos/ fuentes de información

7.2 Vínculos a las publicaciones disponibles

Título, autor, año, ISBN:

Briggs SR et al. Livelihoods in Kamwezi, Kabale District, Uganda.. 1998.

¿Dónde se halla disponible? ¿Costo?

Silsoe Research Institute, UK

Título, autor, año, ISBN:

Mutunga K and Critchley W. Farmer’s initiatives in land husbandry Technical Report No 27. 2001.

¿Dónde se halla disponible? ¿Costo?

Regional Land Management Unit, Nairobi, Kenya

Título, autor, año, ISBN:

Critchley W and Mutunga K .Local innovation in a global context: documenting farmer initiatives in land husbandry through WOCAT Land Degradation and Development (14) pp 143–162. 2003.