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

Nombre de la(s) institución(es) que facilitaron 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)

Farmer initiative within enabling environment [Suiza]

Initiative and innovation of land users, stimulated by government's technical and financial support.

• Compilador: Nicole Guedel
• 13/01/2009 00:00

2.1 Breve descripción de la Tecnología

Definición de la Tecnología:

Contour small bench terraces with stabilising permanent green cover in steep sloping vineyards.

2.2 Descripción detallada de la Tecnología

Descripción:

Description: The vineyards of the region are all, for micro-climatc reasons, more or less sloped. The technology is applied on steep to very steep slopes. It ist characterised by two elements: 1) small bench terrace with one contour-oriented vine row per terrace and 2) an initially sown all-year green cover of the soil surface for stabilisation reasons (green cover is also used between vine rows which are oriented up and down the slope, eg not terraced, see SWI01).
Purpose: Main purpose of the terrace construction is a possible mechanisation on steep to very steep slopes. Direct purpose of the green cover is the stabilisation of the small terraces, indirect but important purpose is the prevention of soil degradation, especially soil erosion by water and - secondary - to protect soil surface from compactation when using mechanised equipment.
Establishment: The terraces are constructed by external specialists and heavy machinery (walking excavator, type "Menzi Muck") and are considered to serve for a whole life cycle of the vine (20-40 years). The green cover is sown since stabilisation is needed from the very beginning on. The duration of the establishment is 3 years. Because of insufficient root length of young vines agronomic and vegetative measures differ from the "normal" measures: For reasons of competition the space around the freshly planted vines is kept free from vegetation with a hoe.
Maintenance: the topsoil is ripped from time to time with fuel driven machine (spade machine tracked by tractor). Cover vegetation is either cut or chopped and serves as mulching . Herbicides are applied around the vines. Minimum tillage and cutting / mulching may additionally serve to mobilise nutrients and to increase organic matter content or to eliminate competition of cover vegetation.
Natural environment: the vineyards are mainly placed on mountain or hill slopes, below 600 m a.s.l., annual rainfall is around 1000 mm with at least one erosive storm per year. The geological underground is limy, locally layered by Molasse (type of conglomerate). Soil properties are strongly influenced by anthropogenic activities (viticulture). Main degradation problem without green cover is erosion by water.
Human environment / land use: the region has a strong wine growing tradition (several centuries), belongs to the important Swiss wine growing regions and is not very densly populated.
First experiments with green cover in Switzerland were done in the 70ies around Zürich on contour small bench terraces, in the region of the lake of Biel contour small bench terraces with green cover started to be implemented in the 80ies

2.3 Fotografías de la Tecnología

2.5 País/ región/ lugares donde la Tecnología fue aplicada y que se hallan comprendidos por esta evaluación

2.6 Fecha de la implementación

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

• hace menos de 10 años (recientemente)

2.7 Introducción de la Tecnología

Especifique cómo se introdujo la Tecnología:

• mediante proyectos/ intervenciones externas

Comentarios (tipo de proyecto, etc.):

The development of contour small bench terraces with green cover in vineyards was (also on the international level) essentially promoted and supported by the Federal Research Station for fruit-growing, viticulture and horticulture in Wädenswil (Canton of Zürich) and Changins (Canton of Vaud)

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

Tierras cultivadas

• Cosecha de árboles y arbustos

Cultivos de matorrales y arbustos - Especifique cultivos:

• uvas

Número de temporadas de cultivo por año:

• 1

Especifique:

Longest growing period in days: 210Longest growing period from month to month: Apr - Oct

Comentarios:

Major land use problems (compiler’s opinion): The main problem was decreasing soil fertility, especially throug soil erosion by water with negative off-site effects like sand- /sediment deposition and contamination of groundwater by nutrients. It became a serious problem since the 60ies when the fact became visible that the traditional labour-intensive cultivation system, which was strongly dependent on external inputss, could no longer be sustained within an industrialised agriculture system.

Type of cropping system and major crops comments: a vine plantation is established for a period of 20-40 years (lifetime of a vine). Some farmers make one year of fallow between the destruction of the old and the establishment of a new plantation.

3.4 Provisión de agua

Provisión de agua para la tierra donde se aplica la Tecnología:

• mixta de secano – irrigada

Comentarios:

Water supply: rainfed, mixed rainfed - irrigated

3.5 Grupo MST al que pertenece la Tecnología

• cobertura de suelo/ vegetal mejorada
• medida de pendiente transversal

• Stabilisation of terraces

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
• Wo: efectos de degradación fuera del sitio

deterioro químico del suelo

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

deterioro físico del suelo

• Pc: compactación
• Pk: desmoronamiento y encostramiento

Comentarios:

Main type of degradation addressed: Wt: loss of topsoil / surface erosion, Wo: offsite degradation effects

Secondary types of degradation addressed: Cn: fertility decline and reduced organic matter content, Cp: soil pollution, Pc: compaction, Pk: sealing and crusting

Main causes of degradation: other human induced causes (specify) (agricultural causes: fast changing basic conditions of viticulture in the last 100 years), education, access to knowledge and support services (lack of knowledge), fast changing basic conditions of viticulture (economy, laws)

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:

• reducir la degradación del suelo

Comentarios:

Main goals: mitigation / reduction of land degradation

4.1 Dibujo técnico de la Tecnología

Especificaciones técnicas (relacionadas al dibujo técnico):

Technical drawing of small contour bench terraces with permanent green cover. A = width of terrace, B = tractor area, C = distance between vine plant and terrace edge, D = gradient of terrace riser, E = distance of vine rows, F = orignal slope, G = zone of application of herbicides (10-40 cm).

Date: June 2003

Technical knowledge required for field staff / advisors: high

Technical knowledge required for land users: moderate

Main technical functions: control of dispersed runoff: retain / trap, reduction of slope angle, reduction of slope length, improvement of ground cover

Secondary technical functions: control of raindrop splash, increase of surface roughness, increase in organic matter, increase of infiltration, increase / maintain water stored in soil, improvement of soil structure, increase in soil fertility

Mulching
Material/ species: cut or chopped cover vegetation
Remarks: dispersed over the whole surface; if possible cutting/chopping (alternating)

Agronomic measure: removing less vegetation cover
Material/ species: cut or chopped cover vegetation, vine leaves and cut branches
Remarks: between vine rows

Manure / compost / residues
Material/ species: compost
Remarks: only sporadically (every 5-10 year or less)

Mineral (inorganic) fertilizers
Material/ species: nitrogen
Quantity/ density: 0-50 kg/ha
Remarks: normally rather little nitrogen

Agronomic measure: mineral (inorganic) fertilizers
Material/ species: potassium
Quantity/ density: 0-20 kg/ha

Agronomic measure: mineral (inorganic) fertilizers
Material/ species: magnesium
Quantity/ density: 0-25 kg/ha

Agronomic measure: mineral (inorganic) fertilizers
Material/ species: phosphorus
Quantity/ density: 0-20 kg/ha

Breaking compacted subsoil
Remarks: only on terrace, if possible only every second row/terrace (alternating)

Scattered / dispersed
Vegetative material: G : grass

Grass species: different grass species, taraxacum, veronica, legumes, calystegia, geranium...

Terrace: bench level
Vertical interval between structures (m): 1.3 m
Spacing between structures (m): 2.5 m

Construction material (earth): only earth of parcel

Slope (which determines the spacing indicated above): 60%

Lateral gradient along the structure: 0%

Vegetation is used for stabilisation of structures.

Autor:

Nicole Güdel, Berne, Switzerland

4.3 Actividades de establecimiento

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: e.g.: walking excavator, hoe, mower with tracked vehicle or portable motor scythe, spading machine with tracked vehicle; knapsack sprayer or biocide t

4.7 Factores más determinantes que afectan los costos:

Describa los factores más determinantes que afectan los costos:

(manual) labour

5.1 Clima

5.2 Topografía

Comentarios y especificaciones adicionales sobre topografía :

Altitudinal zone: 501-1000 m a.s.l. (For climatic reasons vines grow hardly above 600 m a.s.l. in Switzerland)
Landforms: Hill slopes (most of them southeastward sloping hills (part of the Jura mountain range))
Slopes on average: Steep (31-60%) (Vines are planted on different slopes. But contour small bench terraces are applied at steep slopes)

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 depth: From shallow to very deep (Soil depth is very irregular, at some places limestone rocks appear at the surface, at other places soil can be quite deep.But if soil is very shallow for the whole parcel contour small bench terraces)
Soil fertilits is medium (Vines are normally grown on rather marginal spots. Compared to the general productivity these soils have a medium fertility. (If measured at the vine itself, soil fertility is sufficient/high))
Topsoil organic matter is medium (loamy,silty) (without / before SWC (green cover))
Soil drainage/infiltration is mostly good, at some spots medium (depressions; when high percentage of clay)
Soil water storage capacity is medium (without / before SWC (green cover)), high (without / before SWC (green cover)) or low (without / before SWC (green cover). Depressions; when high percentage of clay)

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

Indique otras características relevantes de los usuarios de las tierras:

Population density: 200-500 persons/km2
Annual population growth: 0.5% - 1%
Off-farm income specification: This is representative for the full time winegrowers. The majority of winegrowers do winegrowing beside a regular off-farm job as a hobby. Nearly all winegrowers have implementeted the SWC technology. Probably there is no difference in hobby-winegrowers and full-time-winegrowers concernring implementation of the SWC technology.
Level of mechanization: Manual labour (most of the work in the vineyard is done by hand (especially harvest)) or mechanised (some of the activities are carried out with fuel driven equipment. But mechanisation is moderate since big and heavy machines cannot been applied in these vineyards).
Market orientation is commercial/market (in the region of the lake of Biel the majority of grapes are pressed to wine an then and sold directly from the farm's wine cellar)

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, con título

Derechos de uso de tierra:

• individual

6.1 Impactos in situ demostrados por la Tecnología

Impactos socioeconómicos

Producción

Ingreso y costos

Otros impactos socioeconómicos

Impactos socioculturales

Impactos ecológicos

Suelo

Biodiversidad: vegetación, animales

Reducción de riesgos de desastres y riesgos climáticos

Otros impactos ecológicos

6.2 Impactos fuera del sitio demostrados por la Tecnología

6.4 Análisis costo-beneficio

¿Cómo se comparan los beneficios con los costos de establecimiento (desde la perspectiva de los usuarios de tierra)?

¿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

De todos quienes adoptaron la Tecnología, ¿cuántos lo hicieron espontáneamente, por ej. sin recibir nada de incentivos/ materiales:

• 91-100%

Comentarios:

10% of land user families have adopted the Technology with external material support

Comments on acceptance with external material support: estimates

90% of land user families have adopted the Technology without any external material support

Comments on spontaneous adoption: estimates

There is a strong trend towards spontaneous adoption of the Technology

Comments on adoption trend: Contour small bench terraces with green cover are seen as good opportunity for viticulture in steep slopes. Adoption is done mainly spontaneous

7.1 Métodos/ fuentes de información