1.2 Contact details of resource persons and institutions involved in the assessment and documentation of the Technology

Name of project which facilitated the documentation/ evaluation of the Technology (if relevant)

Scaling-up SLM practices by smallholder farmers (IFAD)

Name of the institution(s) which facilitated the documentation/ evaluation of the Technology (if relevant)

National Agriculture and Forestry Research Institute (NAFRI) - Lao People's Democratic Republic

1.3 Conditions regarding the use of data documented through WOCAT

When were the data compiled (in the field)?

04/07/2017

The compiler and key resource person(s) accept the conditions regarding the use of data documented through WOCAT:

Yes

1.4 Declaration on sustainability of the described Technology

Is the Technology described here problematic with regard to land degradation, so that it cannot be declared a sustainable land management technology?

No

2.1 Short description of the Technology

Definition of the Technology:

Conversion of wetland plots into fishpond.

2.2 Detailed description of the Technology

Description:

At Asoy village and its neighboring villages in the Salavan Province of Lao PDR some rice fields were regularly flood prone during rainy season (August ̶ October) because of a newly constructed road containing culverts leading first through the rice fields and then into natural water ways. Therefore, in 2005 one of the village's land users spread the idea to convert this regularly damaged and increasingly unproductive rice land into fish ponds. The soil texture in this area is mostly clayey and therefore also generally not very suitable for agriculture, but certainly appropriate for water holding throughout the year. Thus, the main objective of these pond constructions was the raising of fishes for income generation and for getting water for household purposes during dry season; e.g. for gardening, fodder production, and for banana and bamboo cultivation along the edges of the pond dikes. The fishpond should also provide water for livestock such as cattle, buffalo, and poultry farming. The construction of the ponds in the case documented here started by shutting off the culvert at the inlets by using sawn wood and clay to close the concrete pipe (Ø80 cm) crossing the road. After, vegetation clearance was required by using a bulldozer. A backhoe then was applied to excavate an area of 1.5 ha to create a first big pond (150 m long and 100 m wide). The excavated soil was used directly for the dike construction. The dikes were around 2.5 m high and 2 m wide. For the first big pond only two dikes had to be shaped because the other two sides were road and fallow. At completion of the big pond, two smaller ponds have been constructed also by backhoe directly next to it. The first of them encompasses an area of 2,000 square meters (20 m x 100 m) and the second 3,000 square meters (30 m x 100 m). After this, four new Ø40 cm drainage pipes were installed; a first one throughout the road leading into the first pond, two of them connecting the ponds and the last pipe is needed to lead the water finally into the natural water way. The pipes have to be installed at a height of 50 cm from the edges. To stabilize the ponds Napier grass, banana, and bamboo can be cultivated on the top of the dikes. Maintenance of the pond requires regular cutting of the Napier grass, which is done by hand. Also regular weeding of the dike’s edges is required, as well as the stabilization of the embankments by using timber and soil. Where repair is required, the timber can be placed vertically, and then filled out with soil. The ponds are hold and maintained individually by the land owner and the benefit of them is considerable. The annual fish production is approximately 1 ton , equivalent to 15 million Kip . The ponds also store water for utilization during dry season especially for the animals (cattle, buffalos, and poultries). The grass growing on the edges can serve as fodder for animals. Banana and bamboo shoots can be consumed and sold for income generation. Material from branches of bamboo trees is used for handicrafts such as baskets and bamboo sheets for house walls, etc. The fishpond improves the aquatic ecosystem habitats in the area. The pond provides spawning areas for a large variety of fish, shrimp, crab, and frog species. However, with changing climate and rainfall patterns it happened that the ponds dried up and the soil became hard with rapidly growing weed around the ponds. Plants such as Napier and banana that are cultivated on the edge of the dikes can die. On the other hand in particular years, there flash floods occur that can affect the dikes due to rapid water runoff; in consequence also fish and other aquatic species can be lost and crops can be damaged. Nonetheless, the land owners at Asoy village prefer this technology and want to expand and improve it, when they have capability or when support from external institutions can be expected (e.g. training in fish breeding and required equipment such as hapa fish net for fish nursery, air pump, dip nets and harvesting net). Finally, the fishponds have been expanded to neighboring villages as well.

2.3 Photos of the Technology

2.5 Country/ region/ locations where the Technology has been applied and which are covered by this assessment

2.6 Date of implementation

Indicate year of implementation:

2005

If precise year is not known, indicate approximate date:

• 10-50 years ago

2.7 Introduction of the Technology

Specify how the Technology was introduced:

• through land users' innovation

3.1 Main purpose(s) of the Technology

• improve production
• reduce, prevent, restore land degradation
• create beneficial economic impact

3.2 Current land use type(s) where the Technology is applied

If land use has changed due to the implementation of the Technology, indicate land use before implementation of the Technology:

Before implementation of the Technology this land was a wetland that is unsuitable for agricultural activities

3.3 Further information about land use

Water supply for the land on which the Technology is applied:

• rainfed

Number of growing seasons per year:

• 1

Livestock density (if relevant):

5 buffalo, 7 goats, 30 pigs, 7 cows

3.4 SLM group to which the Technology belongs

• water harvesting
• beekeeping, aquaculture, poultry, rabbit farming, silkworm farming, etc.

3.5 Spread of the Technology

Specify the spread of the Technology:

• applied at specific points/ concentrated on a small area

3.6 SLM measures comprising the Technology

3.7 Main types of land degradation addressed by the Technology

3.8 Prevention, reduction, or restoration of land degradation

Specify the goal of the Technology with regard to land degradation:

• adapt to land degradation

4.1 Technical drawing of the Technology

4.2 Technical specifications/ explanations of technical drawing

- The dykes height is approximately 2.5m, and the water level from the bottom to the drainage pipe is 2 meters, and the canal width is 3 meters.
- The total size is 100m x150m
- Slope 3-5 %
- Water storage capacity 30,000m3
- Water storage area 1.5 ha
- Development inputs include land, concrete pipes, and sawn woods
- Fish species include: tilapia, grass fish, and crab

4.3 General information regarding the calculation of inputs and costs

Specify how costs and inputs were calculated:

• per Technology unit

other/ national currency (specify):

kip

Indicate exchange rate from USD to local currency (if relevant): 1 USD =:

8500.0

4.4 Establishment activities

	Activity	Type of measure	Timing
1.	Close up the stream	Management	before on set of rain
2.	Exaction works at the bog wetland or seasonal flood prone area	Structural
3.	Build dykes (use backhoe)	Structural

4.5 Costs and inputs needed for establishment

	Specify input	Unit	Quantity	Costs per Unit	Total costs per input	% of costs borne by land users
Labour	labour	person-day	50.0	50000.0	2500000.0	100.0
Labour	excavator	machine	1.0	3000000.0	3000000.0	100.0
Equipment	hoe	piece	20.0	50000.0	1000000.0	100.0
Equipment	shovel	piece	20.0	30000.0	600000.0	100.0
Equipment	knife	piece	5.0	20000.0	100000.0	100.0
Plant material	fodder	bunch	3.0	20000.0	60000.0	100.0
Other	Fry	Fry	2400.0	1000.0	2400000.0	100.0
Total costs for establishment of the Technology					9660000.0

Comments:

The costs for the driver is included in the hiring costs the excavator of the pond.

4.6 Maintenance/ recurrent activities

	Activity	Type of measure	Timing/ frequency
1.	Canal maintenance	Management	yearly
2.	Canal reparation	Structural	yearly
3.	Canal reparation	Other measures	yearly

4.7 Costs and inputs needed for maintenance/ recurrent activities (per year)

	Specify input	Unit	Quantity	Costs per Unit	Total costs per input	% of costs borne by land users
Labour	labour	person	6.0	50000.0	300000.0
Equipment	hoe	piece	1.0	50000.0	50000.0
Equipment	shovel	piece	2.0	30000.0	60000.0
Equipment	knife	piece	1.0	20000.0	20000.0
Equipment	trolley	piece	2.0	250000.0	500000.0
Total costs for maintenance of the Technology					930000.0

4.8 Most important factors affecting the costs

Describe the most determinate factors affecting the costs:

Cost for labour and backhoe service is the most important input.

5.1 Climate

5.2 Topography

Indicate if the Technology is specifically applied in:

• convex situations

5.3 Soils

5.4 Water availability and quality

Is water salinity a problem?

No

Is flooding of the area occurring?

Yes

Regularity:

frequently

5.5 Biodiversity

5.6 Characteristics of land users applying the Technology

5.7 Average area of land owned or leased by land users applying the Technology

5.8 Land ownership, land use rights, and water use rights

Land ownership:

• individual, titled

Land use rights:

• individual

Water use rights:

• individual

5.9 Access to services and infrastructure

6.1 On-site impacts the Technology has shown

Socio-economic impacts

Production

Water availability and quality

Income and costs

Socio-cultural impacts

Ecological impacts

Water cycle/ runoff

Biodiversity: vegetation, animals

6.3 Exposure and sensitivity of the Technology to gradual climate change and climate-related extremes/ disasters (as perceived by land users)

Gradual climate change

Gradual climate change

	Season	Type of climatic change/ extreme	How does the Technology cope with it?
annual temperature		increase	moderately
seasonal temperature	dry season	increase	well
annual rainfall		increase	moderately
seasonal rainfall	wet/ rainy season	decrease	moderately

Climate-related extremes (disasters)

Meteorological disasters

	How does the Technology cope with it?
local rainstorm	very well
local hailstorm	very well

Climatological disasters

	How does the Technology cope with it?
drought	well

Hydrological disasters

	How does the Technology cope with it?
flash flood	well

Biological disasters

	How does the Technology cope with it?
insect/ worm infestation	moderately

Other climate-related consequences

Other climate-related consequences

	How does the Technology cope with it?
extended growing period	moderately

6.4 Cost-benefit analysis

How do the benefits compare with the establishment costs (from land users’ perspective)?

How do the benefits compare with the maintenance/ recurrent costs (from land users' perspective)?

6.5 Adoption of the Technology

• more than 50%

Of all those who have adopted the Technology, how many have did so spontaneously, i.e. without receiving any material incentives/ payments?

• 90-100%

6.6 Adaptation

Has the Technology been modified recently to adapt to changing conditions?

No

6.7 Strengths/ advantages/ opportunities of the Technology

Strengths/ advantages/ opportunities in the land user’s view
Increased aquatic resources with a variety of species including crabs, shrimps, fishes, snails
Suitable to carry out agricultural activities all year-round including crops and animal raising
Increased food security and cash crop production

Strengths/ advantages/ opportunities in the compiler’s or other key resource person’s view
Having sufficient food for the whole year from agriculture production such as crops and animals
Able to produce fry for individual ponds and distribute to others
Able to store water for agricultural activities (cultivation and animal feeding) during dry season
Able to generate income for households from integrated fishing practices

6.8 Weaknesses/ disadvantages/ risks of the Technology and ways of overcoming them

Weaknesses/ disadvantages/ risks in the land user’s view	How can they be overcome?
Lack of fund to maintain the ponds	Producing fry by themselves for sale. By this, creating fund for solid maintenance work.
Occasional floods cause repair work of the pond dykes
Some times, occurring droughts run the ponds dry.

Weaknesses/ disadvantages/ risks in the compiler’s or other key resource person’s view	How can they be overcome?
Lack of expertise in fish raising and breeding	provide fish breeding training activities for local people
Lack of fund for fish raising and fish breeding (purchase of juvenile fish is needed)	provide equipment or fish breeds

7.1 Methods/ sources of information