Technologies

Dug-Out Well [Inde]

Chahala

technologies_1088 - Inde

État complet : 65%

1. Informations générales

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

Personne(s)-ressource(s) clé(s)

Spécialiste GDT:

Kar Monoranjan

Project implementing agency, 9437287808

Spécialiste GDT:

Mohanty Rajib

Watersheds office, DRDA, Balangir, 09437241751

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

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

2. Description de la Technologie de GDT

2.1 Courte description de la Technologie

Définition de la Technologie:

It can be defined as combination of structural & agronomic measures where along with other technology like Water harvesting structures & field bunding on the upper reaches & a dug out well is constructed in the periphery of the drainage line which is a govt land. The 15 acres of land near to its sphere of influence which reamained fallow earlier could yield good production system throughout the year.It is in the semi-arid climatic zone with moderate slope in medium soil depth conditions. The whole idea is to avail water & link with self-subsistance & market oriented production systems from private lands.

2.2 Description détaillée de la Technologie

Description:

The area is located at the foot-slopes on the major drainage line of the watershed. The technology area is located near the main drainage line, therefore, the sub-surface water availability is more & can be utilised for cultivation of crop even in dry spell of the year. Earlier the farmers near to this place tried to dig a small well & could irrigate for only 2-3 months of the year to get some subsistence crops. Therefore, water availability throughout the year is a first priority of the farmers. At the outset, a livelihood focused micro-plan had been prepared by the villagers stating the details of the base-line data along with problems & alternative solutions. The patch was identified to be the worst affected & the owners of the land are poor people (defined by villagers). Usually the land users used to migrate in search of labour due to loss in the agriculture. It is because the water availability is not there at the time of requirement. The people of this patch are ready to contribute at least 10% of the cost as the structure is to be constructed in government land. In the mean time the project sent the PIA to Water technology centre for eastern region, Bhubneswar to study the linking of water harvesting structure & dug-out well & its relevance in this context of our situation. The technology was done in the village Chareimara which is one out of 3 villages of one watershed, located at the lower reach of the watershed. In the meantime many water harvesting structures & field bunds were constructed due to which the water could be stored in the recharge zone. This area is again a mix of stony patches in the crop land. One water harvesting structure was constructed just at the upper reaches. The surrounding area was totally unbunded with clay loam soil. Therefore, land users are of opinion to go for a deeper dug well which can feed water through out to at least 15 acre of land. The requirement of land users was to get some water in each farmers land to protect the Kharif & rabi crop including summer vegetables. A four-day in field training was conducted by the project to community link workers (SWC), particularly on patch treatment, use of levelling instruments like A-frame, proper planning, design, lay-out of different type of structure in a map & ground. At the same time there was a blind belief that large water harvesting structures are more useful to farmers. So the land users demanded for a large WHS on the drainage bed which requires huge investment & high maintenance cost. But when some farmers of that watershed could get good result by digging well these land users also started thinking about a "community dug-well". After many rounds of discussion with the land users by the SWC specialist followed by a detail transact along with land users, the results of first round transact was mentioned in the micro-plan. But the aim behind subsequent transact was to looking at problems & demarcating on the map. After that estimate was prepared & lay-out of the well was done by SWC specialist with the help of community link workers & land users. The lay-out is also little bit different from traditional well i.e. square shaped in stead of round shape. The work was implemented by the land users & 7 outside labourers with the supervision of the User's group leader & monitoring was done by the SWC specialist. The priority by the land users was agronomic measures like changing the crop in the land. Training was conducted on the probable alternatives of agronomic measures like taking of crop which is of little longer duration, intercrops & cash crops etc. The structural measures are subsidised by the project & the agronomic measures was taken up on loan basis. The development fund was also generated out of contribution from the land users which was deposited in a separate account for future maintenance cost.

2.3 Photos de la Technologie

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

Pays:

Inde

Autres spécifications du lieu:

Orissa, Balangir, Suktel/Mahanadi

Spécifiez la diffusion de la Technologie:
  • répartie uniformément sur une zone
Si la Technologie est uniformément répartie sur une zone, précisez la superficie couverte (en km2):

0,6

S'il n'existe pas d'informations exactes sur la superficie, indiquez les limites approximatives de la zone couverte:
  • 0,1-1 km2
Commentaires:

Total area covered by the SLM Technology is 0.6 km2.

The concerned watershed is a subsidiary system of the Suktel river drainage sytem. The area of operation is micro watershed , i.e. 500 hac as a unit of the tributary of the Suktel river

2.6 Date de mise en œuvre de la Technologie

Si l'année précise est inconnue, indiquez la date approximative: :
  • il y a moins de 10 ans (récemment)

2.7 Introduction de la Technologie

Spécifiez comment la Technologie a été introduite: :
  • par le biais de projets/ d'interventions extérieures
Commentaires (type de projet, etc.) :

A group of SWC proffessionals were sent to WTCER, Bhubaneswar to study the replication of ' Linking of water harvesting structure with dug-out wells. . When SWC specialist share their experience to land users, some of the farmers agreed to have a experimentation of the technology. Therefore, modification has been done by the SWC specialists as per the suitability & requirement of the land users.

3. Classification de la Technologie de GDT

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

Terres cultivées

Terres cultivées

  • Cultures annuelles
  • Cultures pérennes (non ligneuses)
Cultures annuelles - Précisez les cultures:
  • légumes - melon, citrouille, courge ou cucurbitacées
  • légumes - autres
  • légumes - légumes-racines (carotte, oignon, betterave, autres)
  • rice
Cultures pérennes (non ligneuses) - Précisez les cultures:
  • canne à sucre
Nombre de période de croissance par an: :
  • 2
Précisez:

Longest growing period in days: 120Longest growing period from month to month: Jun - OctSecond longest growing period in days: 80Second longest growing period from month to month: Oct - Feb

Est-ce que les cultures intercalaires sont pratiquées?

Oui

Si oui, précisez quelles cultures sont produites en culture intercalaire:

Mixed cropping / intercropping
Material/ species: Gourd, Brinjal, onion, sugarcane,water melon
Remarks: After the Kharif crop

Commentaires:

Major land use problems (compiler’s opinion): This patch of the land used to remian fallow in comparison to other lands of the village, with high concentration of marginal farmer. Due to less water availability at the time of need of crop the farmers were quite hesitant to take up diversified crop. They used to migrated instead of taking up any agriculure due to loss year afte year. The main requirement of water throught out the year.

Major land use problems (land users’ perception): 1. Run-off was severe at the time of rainy season but difficult to capture water for other period of the year.2. Long duration crops is not possible, ex- paddy,pulses, sugarcane, vegetables etc. 3. Although land is there but it remained fallow in the past due to water availability. They were the migrants because of onstraint in agriculture.

Type of cropping system and major crops comments: Paddy/Kharif rainfed vegetables, Winter vegetables & spices, summer vegetables. Gourd, Brinjal, onion, sugarcane,water melon

3.4 Approvisionnement en eau

autre (par ex., post-inondation):
  • all of them
Commentaires:

Water supply: rainfed, mixed rainfed - irrigated

3.6 Mesures de GDT constituant la Technologie

pratiques agronomiques

pratiques agronomiques

  • A1: Couverture végétale/ du sol
  • A2: Matière organique/ fertilité du sol
  • A5: Gestion des semences, amélioration des variétés
  • A7: Autres
structures physiques

structures physiques

Commentaires:

Type of agronomic measures: better crop cover, early planting, mixed cropping / intercropping, manure / compost / residues, mineral (inorganic) fertilizers, rotations / fallows, breaking compacted topsoil, deep tillage / double digging

3.7 Principaux types de dégradation des terres traités par la Technologie

érosion hydrique des sols

érosion hydrique des sols

  • Wr: érosion des berges

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
  • restaurer/ réhabiliter des terres sévèrement dégradées
Commentaires:

reclamation of denuded land

4. Spécifications techniques, activités, intrants et coûts de mise en œuvre

4.1 Dessin technique de la Technologie

Spécifications techniques (associées au dessin technique):

Dug Well in Chareimara

Technical knowledge required for field staff / advisors: low

Technical knowledge required for land users: low

Main technical functions: control of dispersed runoff: retain / trap, water harvesting / increase water supply

Secondary technical functions: control of concentrated runoff: impede / retard, water spreading

Better crop cover
Material/ species: paddy, vegetables,
Quantity/ density: Average
Remarks: Paddy for subsistence & vegetables in the land with rainfed & market demand.

Mixed cropping / intercropping
Material/ species: Gourd, Brinjal, onion, sugarcane,water melon
Quantity/ density: ealy harve
Remarks: After the Kharif crop

Manure / compost / residues
Material/ species: 4 -5 cartloads of cow-dung

Mineral (inorganic) fertilizers
Material/ species: Minimum basal doses

Rotations / fallows
Material/ species: the cultivation of crop started after the availability of water.
Remarks: Rainfed paddy with vegetables

Breaking compacted topsoil
Remarks: As the land was fallow earlier, breaking of compact soil is necessary.

Deep tillage / double digging
Remarks: The land where vegetables was grown, deep tillage was required

Structural measure: diversion ditch / cut-off drain
Depth of ditches/pits/dams (m): 26ft
Width of ditches/pits/dams (m): 35ft
Length of ditches/pits/dams (m): 33ft

Construction material (stone): Stone excavetd from the well was put as protection embankment

Construction material (concrete): A concrete guard wall will be put on the periphery of well which will be started in the current year

For water harvesting: the ratio between the area where the harvested water is applied and the total area from which water is collected is: 1:150

Change of land use type: After paddy & kharif vegetables,rabi & summer vegetables .Th e bunds of the patch need to be covered with plants

Change of land use practices / intensity level: Inter crops, mixed crops have to be practiced to get optimum benefit.

Layout change according to natural and human environment: Grazing was restricted in these areas & land was optimally used, like bund cultivation.

Major change in timing of activities: Early varieties of vegetables will fetch at least double benefit.

Control / change of species composition: The improved varities seed need to be introduced

4.2 Informations générales sur le calcul des intrants et des coûts

autre/ monnaie nationale (précisez):

Rupee

Indiquez le taux de change des USD en devise locale, le cas échéant (p.ex. 1 USD = 79.9 réal brésilien): 1 USD = :

50,0

Indiquez le coût salarial moyen de la main d'œuvre par jour:

1.00

4.3 Activités de mise en place/ d'établissement

Activité Calendrier des activités (saisonnier)
1. Survey April-May
2. Demarkation on map April-May
3. Estimate & lay-Out April-May
4. Implementation of work May-July
5. Survey & demarkation of water line April
6. Digging of well May-July
7. Water-way August

4.4 Coûts et intrants nécessaires à la mise en place

Spécifiez les intrants Unité Quantité Coûts par unité Coût total par intrant % des coût supporté par les exploitants des terres
Main d'œuvre Medium hectare 1,0 1250,0 1250,0
Coût total de mise en place de la Technologie 1250,0
Coût total de mise en place de la Technologie en dollars américains (USD) 25,0
Commentaires:

Duration of establishment phase: 24 month(s)

4.5 Activités d'entretien/ récurrentes

Activité Calendrier/ fréquence
1. Ploughing April-May /
2. Intercultural operation with manure & compost application June /
3. Sowing of paddy & rainfed vegetables July & sep for two crops /
4. weeding & intercultural operation, if required. July /
5. Harvesting of paddy orvegetables or sugarcane. Nov /
6. Winter early variety vegetables like onion, brinjal, leafy vegetables, gourds etc. Dec /
7. Harvesting of winter spices & vegetables Feb-March /
8. Sowing of summer vegetables like water melon etc March /
9. Intercultural operation April /
10. Harvesting of vegetables May /
11. Management of surplus water Rainy Season/annual
12. Collapsing of bund annual
13. Well must be desilted Dry season/each cropping season
14. Control of surplus water-flow August-Sep / annual
15. Stabilisation of bund at weak points Nov-Dec / annual
16. Desiltation of well April-may / annual

4.7 Facteurs les plus importants affectant les coûts

Décrivez les facteurs les plus importants affectant les coûts :

Stones are to be excavated from such a height of 26 ft.

5. Environnement naturel et humain

5.1 Climat

Précipitations annuelles
  • < 250 mm
  • 251-500 mm
  • 501-750 mm
  • 751-1000 mm
  • 1001-1500 mm
  • 1501-2000 mm
  • 2001-3000 mm
  • 3001-4000 mm
  • > 4000 mm
Zone agro-climatique
  • subhumide
  • semi-aride

5.2 Topographie

Pentes moyennes:
  • plat (0-2 %)
  • faible (3-5%)
  • modéré (6-10%)
  • onduleux (11-15%)
  • vallonné (16-30%)
  • raide (31-60%)
  • très raide (>60%)
Reliefs:
  • plateaux/ plaines
  • crêtes
  • flancs/ pentes de montagne
  • flancs/ pentes de colline
  • piémonts/ glacis (bas de pente)
  • fonds de vallée/bas-fonds
Zones altitudinales:
  • 0-100 m
  • 101-500 m
  • 501-1000 m
  • 1001-1500 m
  • 1501-2000 m
  • 2001-2500 m
  • 2501-3000 m
  • 3001-4000 m
  • > 4000 m

5.3 Sols

Profondeur moyenne du sol:
  • très superficiel (0-20 cm)
  • superficiel (21-50 cm)
  • modérément profond (51-80 cm)
  • profond (81-120 cm)
  • très profond (>120 cm)
Texture du sol (de la couche arable):
  • moyen (limoneux)
  • fin/ lourd (argile)
Matière organique de la couche arable:
  • moyen (1-3%)
  • faible (<1%)

5.6 Caractéristiques des exploitants des terres appliquant la Technologie

Orientation du système de production:
  • subsistance (auto-approvisionnement)
  • commercial/ de marché
Revenus hors exploitation:
  • moins de 10% de tous les revenus
Niveau relatif de richesse:
  • très pauvre
  • pauvre
Niveau de mécanisation:
  • travail manuel
  • traction animale
Indiquez toute autre caractéristique pertinente des exploitants des terres:

1% of the land users are poor (2-3 acres of land).

Off-farm income specification: Others have also activities like NTFP collection, keeping small ruminants like goats, chicks etc.

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

  • < 0,5 ha
  • 0,5-1 ha
  • 1-2 ha
  • 2-5 ha
  • 5-15 ha
  • 15-50 ha
  • 50-100 ha
  • 100-500 ha
  • 500-1 000 ha
  • 1 000-10 000 ha
  • > 10 000 ha
Commentaires:

Average area of land owned or leased by land users applying the Technology: 0.5-1 ha, 0.5-1 ha, 1-2 ha, 1-2 ha

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

Propriété foncière:
  • individu, avec titre de propriété
Droits d’utilisation des terres:
  • individuel

6. Impacts et conclusions

6.1 Impacts sur site que la Technologie a montrés

Impacts socio-économiques

Production

production agricole

en baisse
en augmentation
Revenus et coûts

revenus agricoles

en baisse
en augmentation

Impacts socioculturels

institutions communautaires

affaibli
renforcé

apaisement des conflits

détérioré
amélioré

Impacts écologiques

Cycle de l'eau/ ruissellement

drainage de l'excès d'eau

réduit
amélioré

6.2 Impacts hors site que la Technologie a montrés

flux des cours d'eau fiables et stables en saison sèche

réduit
en augmentation

6.4 Analyse coûts-bénéfices

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

neutre / équilibrée

Rentabilité à long terme:

très positive

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

légèrement négative

Rentabilité à long terme:

légèrement positive

6.5 Adoption de la Technologie

Commentaires:

100% of land user families have adopted the Technology with external material support

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

Comments on acceptance with external material support: survey results

6.7 Points forts/ avantages/ possibilités de la Technologie

Points forts/ avantages/ possibilités du point de vue de l'exploitant des terres
Water availilbilty
A vibrant community institution could be strngthed.
A well is much better than a large water harvesting structure, it became a eye opener in the surrounding villages.
Points forts/ avantages/ possibilités du point de vue du compilateur ou d'une autre personne ressource clé
Water availability in the dry spell

How can they be sustained / enhanced? Integrated & threes season land use practice
The water availability will be there through out the year.Therefore, 15 acres of land can be irrigated & three seasonal crop can be taken up.

7. Références et liens

7.1 Méthodes/ sources d'information

Modules