1.2 Coordonnées des personnes-ressources et des institutions impliquées dans l'évaluation et la documentation de la Technologie

Nom du projet qui a facilité la documentation/ l'évaluation de la Technologie (si pertinent)

Nom du ou des institutions qui ont facilité la documentation/ l'évaluation de la Technologie (si pertinent)

1.3 Conditions relatives à l'utilisation par WOCAT des données documentées

Le compilateur et la(les) personne(s) ressource(s) acceptent les conditions relatives à l'utilisation par WOCAT des données documentées:

Oui

1.4 Déclaration sur la durabilité de la Technologie décrite

Est-ce que la Technologie décrite ici pose problème par rapport à la dégradation des terres, de telle sorte qu'elle ne peut pas être déclarée comme étant une technologie de gestion durable des terres?

Non

1.5 Référence au(x) Questionnaires sur les Approches de GDT (documentées au moyen de WOCAT)

Peer to Peer Pass-on Approach with Women [Bangladesh]

Terre des hommes and Greendots introduced the Peer to Peer pass-on system to enable women's groups in Bangladesh to spread the Keyhole Garden technique within their communities with the aim of enabling year-round homestead vegetable production despite the risk of flooding and tidal surge.

• Compilateur : John Brogan
• 30 nov. 2016 17:38

2.1 Courte description de la Technologie

Définition de la Technologie:

The Keyhole Garden model of homestead vegetable cultivation enhances the resilience of families living in areas with climate-related hazards, such as flooding and drought. Keyhole gardens have been shown to increase vegetable production in all seasons, thereby improving household food autonomy and dietary diversity.

2.2 Description détaillée de la Technologie

Description:

First initiated in Ugandan communities by Send a Cow UK, the keyhole garden technique is widespread in Africa. In 2011, Terre des hommes (Tdh) and Greendots piloted Keyhole Gardens for the first time in Asia, effectively adapting the design and methodology in Africa to the conditions of flood prone areas of Bangladesh, and eventually India. The garden is a good way to enhance dietary diversity, especially for poor/landless families.

Keyhole gardens consist of a raised circular garden made of clay, shaped like a horseshoe or keyhole, with a maximum diameter of approximately three meters. For flood prone areas in Bangladesh and India, the plinth height depends on the location and is typically the same as the house plinth to resist flooding. A compost basket is built at the center of the garden. Organic matter (kitchen cuttings) and residual water are added on a regular basis through the compost pit. In some countries, bricks or stones are used to make the plinth.

The keyhole garden is a typical Low External Input Sustainable Agriculture (LEISA) approach that includes integrated composting, water retention, use of local materials, natural pest and disease control techniques, natural soil fertility measures, and proximity to the kitchen for both harvesting and care of the garden. In regions with mild conditions of flooding, tidal surge and drought, the garden increases the duration of gardening period during the year thus reducing the risk of disaster. In the aftermath of cyclone Mahasen, keyhole gardens demonstrated DRR utility: although many were partially damaged, none had to be rebuilt entirely. Where plants did not survive the storm, users were able to sow seeds immediately. On the other hand, the traditional ground-level plots used for pit and heap gardening were completely flooded / waterlogged and unusable.

Benefits of the technology include: compact size, proximity to the household for convenient maintenance and harvesting, composting of kitchen cuttings in the basket; and an ergonomic structure (raised, accessible). The small size is also ideal to facilitate training on vegetable growing, soil fertility and pest & disease management to first-time gardeners and students in schools. Keyhole gardens are highly productive—in Lesotho a typical garden can satisfy vegetable needs for a family of eight persons (FAO, 2008). Combined, these factors are scalable as an appropriate technology for landless and marginal farmers. In Bangladesh, the gardens enabled families to produce vegetables even during the monsoon period. As the keyhole garden normally does not need to be rebuilt every year it is a more efficient technique in the long-term than traditional methods such as pit and heap.

Users say that their garden produce tends to be larger and tastier than conventional gardens or market produce; and many indicated that they were able to meet their own vegetable consumption needs and to sell surplus or gift vegetables. For some women it was difficult to access sufficient amounts of soil, which meant that they needed to walk long distances to build the plinth. (Fortunately many received support from other villagers.) Secondly, during the monsoon, while most of the land is flooded, the keyhole garden remains dry. Consequently, it may provide shelter to certain animals (e.g. rats) and attract higher number of pests. Regardless of these two limitations users agree that the benefits greatly
outweigh any observed limitations.

2.3 Photos de la Technologie

2.4 Vidéos de la Technologie

2.5 Pays/ région/ lieux où la Technologie a été appliquée et qui sont couverts par cette évaluation

Pays:

Bangladesh

Région/ Etat/ Province:

Kurigram District / Rajshahi and Barguna District / Barisal

Autres spécifications du lieu:

Kurigram municipality (Kurigram), Patharghata Union (Barguna)

Spécifiez la diffusion de la Technologie:

• appliquée en des points spécifiques ou concentrée sur une petite surface

Commentaires:

Kurigram and Pataharghata, Bangladesh
Applied in homesteads.

Map

×

2.6 Date de mise en œuvre de la Technologie

Indiquez l'année de mise en œuvre:

2012

2.7 Introduction de la Technologie

Spécifiez comment la Technologie a été introduite: :

• grâce à l'innovation d'exploitants des terres
• au cours d'expérimentations / de recherches
• par le biais de projets/ d'interventions extérieures

3.1 Principal(aux) objectif(s) de la Technologie

• améliorer la production
• réduire les risques de catastrophes
• s'adapter au changement et aux extrêmes climatiques et à leurs impacts
• atténuer le changement climatique et ses impacts

3.2 Type(s) actuel(s) d'utilisation des terres, là où la Technologie est appliquée

Terres cultivées

• Cultures annuelles
• Cultures pérennes (non ligneuses)

• Homestead Gardening

Cultures annuelles - Précisez les cultures:

• céréales - quinoa ou amarante
• légumineuses et légumes secs - fèves
• légumes - légumes à feuilles (laitues, choux, épinards, autres)
• légumes - melon, citrouille, courge ou cucurbitacées
• légumes - autres
• légumes - légumes-racines (carotte, oignon, betterave, autres)

• tomatoes, cauliflower, brocoli, watercress, eggplant, cucumber

Cultures pérennes (non ligneuses) - Précisez les cultures:

• plantes et herbes médicinales/ aromatiques/ pesticides - pérennes

• chili

Nombre de période de croissance par an: :

• 3

Précisez:

In Bangladesh the gardens produced in all seasons, with most challenges coming in the dry season due to soil salinity in some areas.

Est-ce que les cultures intercalaires sont pratiquées?

Oui

Est-ce que la rotation des cultures est appliquée?

Oui

Si oui, veuillez préciser:

Winter/Summer seasons

Commentaires:

Winter Season: red amaranth, spinach, green chilli, tomato, eggplant, carrot, radish, onion, garlic, country bean, pumpkin, cabbage, cauliflower, broccoli.
Summer & Rainy Seasons: red amaranth, green amaranth, Indian spinach, Chinese watercress, green chili, okra, eggplant, yard long bean, bitter gourd, ash gourd, cucumber, pumpkin

3.3 Est-ce que l’utilisation des terres a changé en raison de la mise en œuvre de la Technologie ?

Voies d'eau, plans d'eau, zones humides

3.4 Approvisionnement en eau

Approvisionnement en eau des terres sur lesquelles est appliquée la Technologie:

• mixte: pluvial-irrigué

3.5 Groupe de GDT auquel appartient la Technologie

• gestion intégrée de la fertilité des sols
• lutte intégrée contre les ravageurs et les maladies (incluant l'agriculture biologique)
• Jardins/ potagers familiaux

3.6 Mesures de GDT constituant la Technologie

pratiques agronomiques

• A1: Couverture végétale/ du sol
• A2: Matière organique/ fertilité du sol

structures physiques

• S11: Autres

3.7 Principaux types de dégradation des terres traités par la Technologie

érosion hydrique des sols

• Wt: perte de la couche superficielle des sols (couche arable)/ érosion de surface

3.8 Prévention, réduction de la dégradation ou réhabilitation des terres dégradées

Spécifiez l'objectif de la Technologie au regard de la dégradation des terres:

• prévenir la dégradation des terres
• réduire la dégradation des terres

Commentaires:

See details in section 2.2

4.1 Dessin technique de la Technologie

Spécifications techniques (associées au dessin technique):

Gardens should be built in close vicinity to the beneficiary’s house, because gardens that are easily accessible and clearly visible are visited more regularly and maintained better.

The design is highly adaptable to local conditions and availability of free construction materials. The radius of the garden is 150CM and the delineated radius of the circular compost basket (in the center of the garden) is 45cm. The diagrams show (1) the location is near to house as an entry point for maintaining the garden; (2) the plinth is built to the same level of the house and a step is included where the plinth is high; (3) mulching to conserve the moisture; (4) interplanting a diversity of vegetables for both good vegetable health and good family nutrition; (5) using interplanted natural repellent plants as pest control for vegetables; (6) covering the basket during times of high sun intensity or heavy rain; (7) using liquid manures and plant teas as top dressing fertilisers.

Establishing what is the best height for your plinth very much depends on the local climatological conditions. In Bangladesh, the plinth is built from subsurface clayey soil, typically 2-3 feet in height - dependent on the location and level of seasonal flooding. The house plinth is a good gauge for how high to build the garden plinth. If the plinth is built too high, the roots of the plant will not be able to access sufficient water; and if built too low the next flood during the monsoon season may destroy the garden. Depending on dryness or soil/groundwater salinity, daily maintenance usually includes irrigating the soil. The outer rim of the plinth is protected with mud (and plastic or cloth) or stones. On top of the plinth is a mixture of soil and compost/manure (ratio 2:1) sloped up to the basket at a 30 - 40 degree angle. The central compost basket is filled with layers of fresh and dried vegetable matter, manure and ash to ensure that the soil fertility of the garden.

Women devised a number of different solutions to protecting the wall of the plinth and garden: Plastic bags, a combination of rice sacks (around the plinth edge) and plastic entrance way because of wear and tear (rice sacks erode faster), palm matting and old cloth. Some women put extra manure in the plinth walls to protect against flooding.

Sam Rich (www.fourthway.co.uk) has produced other technical drawings in addition to "How to Make Liquid Manure" such as: "How to make a Natural Pesticide" and "How to Make Plant Tea". There is also a version of the "How to Make a Keyhole Garden" in English from the experience in Africa.

Auteur:

Sam Rich: www.fourthway.co.uk

Date:

13/05/2012

Auteur:

Sam Rich: www.fourthway.co.uk

Date:

13/05/2012

Auteur:

BBC Media Action Bangladesh

Date:

09/06/2014

4.2 Informations générales sur le calcul des intrants et des coûts

Spécifiez la manière dont les coûts et les intrants ont été calculés:

• par entité de la Technologie

Indiquez la monnaie utilisée pour le calcul des coûts:

• dollars américains

4.3 Activités de mise en place/ d'établissement

4.4 Coûts et intrants nécessaires à la mise en place

Commentaires:

Firstly, building the garden requires an initial investment in terms of labour and (locally available) inputs, such as soil and wood and clayey soil for the plinth (stones and bricks are frequently used for the plinth in Africa). These inputs are available on the homestead or in the community and generally free of cost. In rare cases families paid to have soil carted to their homestead, thus increasing the initial structural costs.

4.5 Activités d'entretien/ récurrentes

4.6 Coûts et intrants nécessaires aux activités d'entretien/ récurrentes (par an)

Commentaires:

In Bangladesh, women referred to the time spent working on the keyhole garden as “leisure time” and that they do this work after they have completed their domestic chores. Women estimated 45 minutes daily of such activity to maintain the garden. Calling it "leisure time" is misleading, but it suggests that most women generally enjoy working in the garden and do not regard it as heavy labour. The daily wage of an agricultural labourer differs per region. In Tdh's project area, wages are relatively low, especially for women. While male labourers may earn 200 BDT ($2.50) per day, women usually earn only 90 to 150 BDT. For the calculation, we applied the principle of equal pay for equal work, taking 200BDT per day.

4.7 Facteurs les plus importants affectant les coûts

Décrivez les facteurs les plus importants affectant les coûts :

Over the last few years, people in disaster-affecteed areas of Bangladesh have become familiar to receiving during humanitarian distributions; and expect “hand-outs” if they were to participate in a development project. The Keyhole garden project, however, follows the LEISA approach and does not rely on giving free inputs to the participants. (In a few cases where the local population was lacking seeds and experience in seed production, women's groups were given seeds and training.) A lack of reliance on external inputs or subsidies contributes to the sustainability of the project. The inputs (clay, manure, sticks, rocks, etc.) are locally available and usually do not require additional expenses. This may not be the case in all contexts.

5.1 Climat

5.2 Topographie

Indiquez si la Technologie est spécifiquement appliquée dans des:

• non pertinent

5.3 Sols

5.4 Disponibilité et qualité de l'eau

La salinité de l'eau est-elle un problème? :

Oui

Précisez:

In project sites along the Bay of Bengal

La zone est-elle inondée?

Oui

Régularité:

fréquemment

5.5 Biodiversité

5.6 Caractéristiques des exploitants des terres appliquant la Technologie

Indiquez toute autre caractéristique pertinente des exploitants des terres:

Using a methodology called the problem tree analysis it is understood that the people living in the two working areas regularly experience health-related problems, economic challenges, and agricultural difficulties.

5.7 Superficie moyenne des terres utilisées par les exploitants des terres appliquant la Technologie

5.8 Propriété foncière, droits d’utilisation des terres et de l'eau

Propriété foncière:

• individu, sans titre de propriété

Droits d’utilisation des terres:

• individuel

Droits d’utilisation de l’eau:

• accès libre (non organisé)

5.9 Accès aux services et aux infrastructures

6.1 Impacts sur site que la Technologie a montrés

Impacts socio-économiques

Production

Impacts socioculturels

Impacts écologiques

Sols

Réduction des risques de catastrophe et des risques climatiques

Autres impacts écologiques

6.2 Impacts hors site que la Technologie a montrés

6.3 Exposition et sensibilité de la Technologie aux changements progressifs et aux évènements extrêmes/catastrophes liés au climat (telles que perçues par les exploitants des terres)

Extrêmes climatiques (catastrophes)

Catastrophes météorologiques

Catastrophes hydrologiques

Autres conséquences liées au climat

Autres conséquences liées au climat

6.4 Analyse coûts-bénéfices

Quels sont les bénéfices comparativement aux coûts de mise en place (du point de vue des exploitants des terres)?

Quels sont les bénéfices comparativement aux coûts d'entretien récurrents (du point de vue des exploitants des terres)?

Commentaires:

No long term study available.
In most cases no (or very low) investment cost in materials and a low investment cost in labor was necessary. Thus the establishment and maintenance costs are relatively low compared to the benefit of increased homestead vegetable production and access to produce for increasing dietary diversity. The benefit increases when the technology supports resilience to flooding as was the case from flooding (Kurigram), and partially from a cyclone (Patharghata).

6.5 Adoption de la Technologie

• > 50%

Si disponible, quantifiez (nombre de ménages et/ou superficie couverte):

333 from the pilot study. Subsequent projects by Tdh from 2013-2015 have seen over 3'500 keyhole gardens created in Bangladesh and India.

De tous ceux qui ont adopté la Technologie, combien d'entre eux l'ont fait spontanément, à savoir sans recevoir aucune incitation matérielle, ou aucune rémunération? :

• 91-100%

Commentaires:

All of the adopters did so with training but without inputs. Spontaneous adoption of the Keyhole Garden without training is not easy to measure, but Tdh's experience shows a conservative average of 11% (38 of 333 gardens).

6.6 Adaptation

La Technologie a-t-elle été récemment modifiée pour s'adapter à l'évolution des conditions?

Oui

Si oui, indiquez à quel changement la Technologie s'est adaptée:

• changements/ extrêmes climatiques

Spécifiez l'adaptation de la Technologie (conception, matériaux/ espèces, etc.):

The technology was adapted from semi-arid zones in Africa (where soil amelioration and water conservation were priorities and materials such as stones and brick are available) to areas of South Asia prone to flood and tidal surge.

6.7 Points forts/ avantages/ possibilités de la Technologie

6.8 Faiblesses/ inconvénients/ risques de la Technologie et moyens de les surmonter

7.1 Méthodes/ sources d'information

7.2 Références des publications disponibles

Titre, auteur, année, ISBN:

"Keyhole Gardens: Improved Access to Homestead Vegetables and Dietary Diversification- External Evaluation and Capitalization of the Keyhole Garden Project in Bangladesh", Van Hout, R., 2013

Disponible à partir d'où? Coût?

Freely available: Terre des hommes Lausanne Asia Desk: info@tdh.ch

Titre, auteur, année, ISBN:

“Keyhole Gardens – great potential for improving homestead crop diversity and mother & child nutrition”, Taylor S, 2013, Discussion paper for the Agrobiodiversity Conference, Dhaka, 28 January 2013

Disponible à partir d'où? Coût?

Freely available: Terre des hommes Lausanne Asia Desk: info@tdh.ch

Titre, auteur, année, ISBN:

"Keyhole Gardens in Lesotho", FAO Nutrition and Consumer Protection Divis"ion (AGN), 2008 (with Send a Cow UK)

Disponible à partir d'où? Coût?

http://www.fao.org/ag/agn/nutrition/docs/FSNL%20Fact%20sheet_Keyhole%20gardens.pdf

7.3 Liens vers les informations pertinentes en ligne

Titre/ description:

Greendots - Terre des hommes technical partner for Keyhole Gardens in South Asia

URL:

www.greendots.ch

Titre/ description:

Send a Cow UK: How to make an African style raised bed (YouTube, ex. Uganda)

URL:

https://www.youtube.com/watch?v=ykCXfjzfaco

Titre/ description:

Send a Cow UK - Keyhole Garden resources (Learning from Africa: How to make a Keyhole Garden)

URL:

http://www.sendacow.org.uk/lessonsfromafrica/resources/keyhole-gardens

Titre/ description:

Fourthway's posters online: Smallholder organic agriculture (Uganda, including Keyhole gardens)

URL:

http://www.fourthway.co.uk/posters/

Titre/ description:

Fourthway's posters online: Smallholder organic agriculture (Bangladesh, including Keyhole gardens)

URL:

http://www.fourthway.co.uk/bangladesh/index.html

Titre/ description:

Terre des hommes: First Keyhole Garden in Asia (to resist storm surge/floods in Bangladesh)

URL:

https://vimeo.com/44043929