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)

Sustainable use of water [Grecia]

Sustainable use of water

• Compilador: Costas Kosmas
• 30/06/2009 00:00

2.1 Breve descripción de la Tecnología

Definición de la Tecnología:

Drip irrigation, also known as trickle irrigation is a method which minimizes the use of water and fertilizer by allowing water to drip slowly to the roots of plants, either onto the soil surface or directly onto the root zone, through a network of valves, pipes, tubing, and emitters.

2.2 Descripción detallada de la Tecnología

Descripción:

Irrigation is very important for increasing crop yields in arid, semi-arid and dry sub-humid climates. The area of irrigated land has increased more than twice in the last decades in the study areas. In recent years, the considerable reduction of winter and autumn rainfall has caused a serious lack of water resources. The production of the various crops is substantially reduced if water is not provided during the summer period.
The high demands for water consumption or other economic activities have increased the price of water, forcing up the cost of agricultural production. In addition, in many cases, low quality (with high electrical conductivity) water is used for irrigation. The need for intensification of agriculture to meet the high cost of production, the use of poor quality of water, the lack of drainage systems are in many cases responsible for soil degradation resulting from water logging, salinization, alkalinization, and soil erosion.

Purpose of the Technology: Drip or trickle irrigation achieves the highest irrigation efficiency since about 90% of the applied water is available to the plants. This SWC technology is especially suitable for watering trees or other large plants keeping strips among trees dry. Application of water by drip irrigation can be considered more as more efficient method using low quality of irrigation water. Irrigation water of high salt content can be applied in higher quantities in spots leaching salts to deeper soil layers. Drip irrigation can be applied in any type of soil from coarse- and fine-textured and without any limitation to slope gradient requiring little labour during installation.

Establishment / maintenance activities and inputs: In the study area of Chania trickle irrigation system includes mainly three branches from the outlet of main water network transportation system to the application in the trees. The last branch consists of plastic tube 12 to 32 mm in diameter that lies either on or just below the soil surface and applies the water either through small holes in the line or through emitter nozzle.

Natural / human environment: In recent years the increasing awareness of farmers on issues relating to the sustainability of the environment and conservation of water by promoting SWC technologies has led to widespread of use of drip irrigation in the area of Crete and in many other parts of the Country. The categorization of the specific SWC technology according to the WOCAT questionnaire is defined as: CtWtA3.

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:

Grecia

Región/ Estado/ Provincia:

Kidonia

Especifique más el lugar :

Chania Crete

Comentarios:

Total area covered by the SLM Technology is 480 km2.

Map

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2.7 Introducción de la Tecnología

Especifique cómo se introdujo la Tecnología:

• durante experimentos/ investigación

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:

• aceituna

Especifique:

Longest growing period in days: 120Longest growing period from month to month: March to JuneSecond longest growing period in days: 150Second longest growing period from month to month: March to June

Comentarios:

Major land use problems (compiler’s opinion): availability of irrigation water, loss of water in the network, conflicts between districts and economic sectors of tourism and agriculure

Major land use problems (land users’ perception): availability of irrigation water, conflicts between districts and economic sectors of tourism and agriculure

Livestock is grazing on crop residues

3.4 Provisión de agua

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

• mixta de secano – irrigada

3.5 Grupo MST al que pertenece la Tecnología

• Manejo de irrigación: (incl. provisión de agua, invernaderos)

3.6 Medidas MST que componen la Tecnología

medidas agronómicas

• A3: Tratamiento de superficie del suelo

medidas estructurales

• S11: Otros

Comentarios:

Main measures: agronomic measures

Secondary measures: structural measures

Type of vegetative measures: in blocks

3.7 Principales tipos de degradación del suelo encarados con la Tecnología

degradación del agua

• Ha: aridificación

Comentarios:

Main type of degradation addressed: Ha: aridification

Main causes of degradation: disturbance of water cycle (infiltration / runoff) (lack of water), education, access to knowledge and support services (lack of knowledge)

Secondary causes of degradation: over abstraction / excessive withdrawal of water (for irrigation, industry, etc.) (salinization)

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

Comentarios:

Secondary goals: prevention of land degradation

4.1 Dibujo técnico de la Tecnología

Especificaciones técnicas (relacionadas al dibujo técnico):

In the study area of Chania trickle irrigation system includes mainly three branches from the outlet of main water network transportation system to the application in the trees. The last branch consists of plastic tube 12 to 32 mm in diameter that lies either on or just below the soil surface and applies the water either through small holes in the line or through emitter nozzles.

Location: Kasteli. Chania

Date: March 2007

Technical knowledge required for land users: moderate (system installation requirements)

Main technical functions: improvement of ground cover

Secondary technical functions: increase in organic matter, increase of biomass (quantity)

In blocks
Vegetative material: C : perennial crops
Number of plants per (ha): 250
Vertical interval between rows / strips / blocks (m): 5
Spacing between rows / strips / blocks (m): 5
Vertical interval within rows / strips / blocks (m): 5
Width within rows / strips / blocks (m): 4

Perennial crops species: olives

Slope (which determines the spacing indicated above): 15.00%

Gradient along the rows / strips: 15.00%

Structural measure: irrigation system
Spacing between structures (m): 8

Construction material (other): plastic, plastic tubes 12-32 mm in diameter

Other type of management: Water distribution among farmers, water is provided under the control of local authorities

Autor:

C. Kosmas

4.3 Actividades de establecimiento

4.4 Costos e insumos necesarios para el establecimiento

Comentarios:

Duration of establishment phase: 0.1 month(s)
Life span of the irrigation network: 20 years

4.5 Actividades de establecimiento/ recurrentes

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

Comentarios:

Machinery/ tools: hand tools, System of applying fertilizers through the irrigation water, filters for keeping various solid materials

per hectare of land affected

4.7 Factores más determinantes que afectan los costos:

Describa los factores más determinantes que afectan los costos:

the reguired materials (tubes, filters, etc)

5.1 Clima

5.2 Topografía

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 fertility is very high-medium
Soil drainage/infiltration is good
Soil water storage capacity is high-very high

5.4 Disponibilidad y calidad de agua

Comentarios y especificaciones adicionales sobre calidad y cantidad de agua:

Ground water table: 5-50 m, > 50 m

Water quality (untreated): good drinking water, for agricultural use only (irrigation)

5.5 Biodiversidad

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

Indique otras características relevantes de los usuarios de las tierras:

Land users applying the Technology are mainly common / average land users

Difference in the involvement of women and men: Women in rural areas are involved in other type of work

Population density: 10-50 persons/km2

Annual population growth: 1% - 2%

5% of the land users are rich (cost for buying materials).
55% of the land users are average wealthy.

Off-farm income specification: working in tourist business

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:

• arrendamiento
• individual

Derechos de uso de agua:

• comunitarios (organizado)
• individual

5.9 Acceso a servicios e infraestructura

6.1 Impactos in situ demostrados por la Tecnología

Impactos socioeconómicos

Producción

Disponibilidad y calidad de agua

Ingreso y costos

Impactos socioculturales

Impactos ecológicos

Suelo

Biodiversidad: vegetación, animales

Otros impactos ecológicos

6.2 Impactos fuera del sitio demostrados por la Tecnología

6.3 Exposición y sensibilidad de la Tecnología al cambio climático gradual y a extremos relacionados al clima/ desastres (desde la percepción de los usuarios de tierras)

Extremos (desastres) relacionados al clima

Desastres hidrológicos

Comentarios:

Control of flooding by adjusting river bed

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

Si tiene la información disponible, cuantifique (número de hogares y/o área cubierta):

3850

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

• 11-50%

Comentarios:

65% of land user families have adopted the Technology with external material support

2200 land user families have adopted the Technology with external material support

35% of land user families have adopted the Technology without any external material support

1650 land user families have adopted the Technology without any external material support

There is a moderate trend towards spontaneous adoption of the Technology

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