Solar Power Water Lifting and Application to Orchard through Drip Irrigation [Pakistan]
- Creation:
- Update:
- Compiler: Madhav Dhakal
- Editor: –
- Reviewer: Rima Mekdaschi Studer
technologies_5610 - Pakistan
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Expand all Collapse all1. General information
1.2 Contact details of resource persons and institutions involved in the assessment and documentation of the Technology
Key resource person(s)
SLM specialist:
Maqsood Muhammad Mudassar
International Centre for Integrated Mountain Development
Pakistan
SLM specialist:
Shah Ghulam Muhammad
International Centre for Integrated Mountain Development
Pakistan
SLM specialist:
Bhatti Ahmad Zeeshan
Pakistan Council of Research in Water Resources
Pakistan
SLM specialist:
Khan Muhammad Zafar
Karakorum International University
Pakistan
SLM specialist:
Khan Babar
World Wide Fund For Nature
Pakistan
SLM specialist:
Ali Rehmat
World Wide Fund For Nature
Pakistan
SLM specialist:
Ali Amjad
Karakorum International University
Pakistan
SLM specialist:
Ali Ajaz
International Centre for Integrated Mountain Development
Pakistan
SLM specialist:
Dhakal Madhav
International Centre for Integrated Mountain Development
Nepal
1.3 Conditions regarding the use of data documented through WOCAT
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. Description of the SLM Technology
2.1 Short description of the Technology
Definition of the Technology:
Water from the Hunza river was lifted through solar powered pump, stored above ground plastic tanks and applied to newly planted apple orchards through efficient drip irrigation. Mulch was applied to the plants to conserve soil moisture.
2.2 Detailed description of the Technology
Description:
The fragile rouged mountains prone to the effect of climate change makes the mountain com-munities in Gilgit-Baltistan of Pakistan more vulnerable. Agriculture is the major source of their livelihoods and it purely dependents on glacier meltwater which makes the community more susceptible due to the unstable behaviour of the glaciers. Irrigation is practised with traditional irrigation canals, intake of which is located at glacier terminus. On one hand lowering of glacier surface disconnects many irrigation canals. Uncertain glacier behaviour has resulted in the decline of water availability and even forced some communities to abandon their agricultural land. On the other hand, only 2% of land in Gilgit-Baltistan is used for agriculture purposes whereas a huge chunk of barren land lays above the Hunza River, which cannot be cultivated through the traditional irrigation system hence it remains unutilized.
To address both issues, ICIMOD together with a local level partner’s consortia piloted solar water lifting to irrigate barren land for establishing apple orchards along Hunza River at Passu and Morkhun Villages. These two villages are located far from each other. In each village, orchards of 2.5 hectare area were established and the drip irrigation system installed was efficiently used to irrigate apple plants. Similar technological packages (solar pump, drip irrigation and mulch) were applied in both the villages.
The pumping system comprises a submersible pump (Lorentz, Germany 1 HP) powered by 500 watts solar panels to carry the water to storage tanks (500 litres) made up of plastic that has been placed upslope at 100 feet vertical height from the river. The water from the storage tanks was routed/led to the apple saplings through the surface and pressure compensating drip irrigation system. The pumping capacity of the pump is 7.5 litres/minute, which is irrigating around 3300 apple plants at Passu and Morkhun. The storage tank was kept 60 feet vertical height from the orchard field to be irrigated. Tree to tree distance and row to row distance of apple was maintained at 15 feet in Passu and 10 feet in Morkhun. Drip irrigation (surface and pressure compensating) system was established to irrigate each apple plant, the emitter of the drip system was adjusted according to the plant to plant distance of apple seedlings to be irrigated. Pits were constructed for planting apples and later they also served as water harvesting pits /check basins. Plastic mulch was applied to each apple plants covering a radius around the trunk to minimize soil moisture losses, reduce weed and reduce soil erosion by water and wind.
The cost of an integrated package including solar pumps with accessories, storage tanks, intake and distribution systems (i.e. from river to tank and tank to trees), drip irrigation, apple plants and operational expenses (manpower) for both the sites was US$ 42000 for 5 ha of land. Village Development Organizations (VDO) of both villages take care of maintenance of technological package through a maintenance fund, which is being raised by participating households (HHs). Benefit sharing mechanism has been agreed among the participating HHs. The total income would be divided equally among participating 72 HHs in Morkhun and 135 HHs in Passu.
The technological package was applied in arid climate at an elevation ranging from 2340m to 4877 m above sea level. Passu is located at 36.49o latitude and 74.90o longitude and Morkhun is located at 36.6o N latitudes and 74.86o E longitudes. The area receives 150-200 mm annual rain-fall. The temperature ranges from 11 degree Celsius to 29 degree Celsius. The population of Passu and Morkhun is 1168 and 653 persons respectively. Both villages are semi nomadic and depend mainly on livestock rearing.
2.3 Photos of the Technology
2.4 Videos of the Technology
Date:
09/10/2018
Location:
Morkhun and Passu
2.5 Country/ region/ locations where the Technology has been applied and which are covered by this assessment
Country:
Pakistan
Region/ State/ Province:
Gilgit Baltistan Province
Further specification of location:
Morkhun and Passu
Specify the spread of the Technology:
- applied at specific points/ concentrated on a small area
Is/are the technology site(s) located in a permanently protected area?
No
Map
×2.6 Date of implementation
Indicate year of implementation:
2016
If precise year is not known, indicate approximate date:
- less than 10 years ago (recently)
2.7 Introduction of the Technology
Specify how the Technology was introduced:
- through projects/ external interventions
Comments (type of project, etc.):
This package of practices was jointly implemented by Pakistan Council of Research in Water Resources (PCRWR), Worldwide Fund for Nature (WWF) - Pakistan, and ICIMOD
3. Classification of the SLM Technology
3.1 Main purpose(s) of the Technology
- improve production
- reduce, prevent, restore land degradation
- adapt to climate change/ extremes and its impacts
- create beneficial economic impact
- create beneficial social impact
3.2 Current land use type(s) where the Technology is applied
Land use mixed within the same land unit:
No
Cropland
- Tree and shrub cropping
- Apple
Number of growing seasons per year:
- 1
Specify:
April to October, rest months the region is covered with snow
Is intercropping practiced?
No
Is crop rotation practiced?
No
3.3 Has land use changed due to the implementation of the Technology?
Has land use changed due to the implementation of the Technology?
- Yes (Please fill out the questions below with regard to the land use before implementation of the Technology)
Land use mixed within the same land unit:
No
Cropland
- Unproductive
Is intercropping practiced?
No
Is crop rotation practiced?
No
3.4 Water supply
Water supply for the land on which the Technology is applied:
- full irrigation
Comments:
Water supply with solar pump and distribution to apple with drip irrigation
3.5 SLM group to which the Technology belongs
- irrigation management (incl. water supply, drainage)
- surface water management (spring, river, lakes, sea)
- energy efficiency technologies
3.6 SLM measures comprising the Technology
vegetative measures
- V1: Tree and shrub cover
management measures
- M1: Change of land use type
3.7 Main types of land degradation addressed by the Technology
soil erosion by water
- Wt: loss of topsoil/ surface erosion
soil erosion by wind
- Et: loss of topsoil
water degradation
- Ha: aridification
other
Specify:
Damage and dysfunction of irrigation canal .
Comments:
Damage and dysfunction of irrigation canal intake by shifting nature of glacier as intakes are located at the glacier terminus.
3.8 Prevention, reduction, or restoration of land degradation
Specify the goal of the Technology with regard to land degradation:
- restore/ rehabilitate severely degraded land
Comments:
due to water access cultivation was possible and vegetation cover improved.
4. Technical specifications, implementation activities, inputs, and costs
4.1 Technical drawing of the Technology
Technical specifications (related to technical drawing):
Solar Pump: DC submersible (Lorentz, Germany 1 HP), the capacity of Panels: 500 watts, and pumping capacity of the pump: 7.5 litres/minute.
The capacity of storage tank: 500 litres, location of storage tank: 100 feet height (vertical) from the river and 60 feet height (vertical) from the orchard field.
Drip Irrigation: Surface and pressure compensating. The spacing of dripping points: 10 feet in Morkhun and 15 feet in Passu. Water application per plant by drip irrigation is 2 litres per day.
Plant to plant and row to row distance of apple 10 feet in Morkhun and 15 feet ( both plant to plant and row to row) in Passu coinciding with the dripping holes.
Pits: Constructed for planting apples, later they served as water harvesting pits /check basins.
Plastic mulch: In each plant. Shape of the plastic mulch is rectangular and dimension is variable, average about 5 ft long and 3 feet wide. It is an opaque plastic sheet.
Author:
Muhammad Mudassar Maqsood)
Date:
09/10/2018
4.2 General information regarding the calculation of inputs and costs
Specify how costs and inputs were calculated:
- per Technology unit
Specify unit:
Technological package at two sites ( solar system, water storage tank, drip, orchard establishment, and mulch) , same package is applied in two sites separately. Total area of two sites is 5 ha
Specify currency used for cost calculations:
- USD
Indicate average wage cost of hired labour per day:
US$ 14.5 for skilled person and US$ 7.5 for unskilled person
4.3 Establishment activities
Activity | Timing (season) | |
---|---|---|
1. | Site identification in consultation with the communities | Pre Monsson (March) |
2. | Detailed engineering surveys, design formulation, tendering and work orders etc | Pre Monsson (March ) |
3. | Implementation agreement with the community | Pre Monsson (March) |
4. | Installation of solar-powered pumping units with four poly-crystalline solar panels. | Pre Monsson (April) |
5. | Installation of storage (plastic tank) with a line filter attached to it for the operation of the drip system and avoid sediment entry into the tank | Pre Monsson (April) |
6. | Digging of pits for plantation of the apple orchard at the plant to plant and row distance of 10 feet (Morkhun) and 15 feet (Passu)) | Pre Monsson (April) |
7. | Constructed pits for each plant used for application of compost | Pre Monsson (April) |
8. | Laying of drip irrigation systems | Pre Monsson (May) |
9. | Laying down plastic mulch | Pre Monsson (May) |
10. | Plantation of tubed apple (Kala Kolu variety) it is bought from the local nursery | Pre Monsson (May) |
11. | Training to selected farmers as caretakers of the technologies for its days to day repair and maintenance | Pre Monsson ( May) |
4.4 Costs and inputs needed for establishment
Specify input | Unit | Quantity | Costs per Unit | Total costs per input | % of costs borne by land users | |
---|---|---|---|---|---|---|
Labour | Skilled | Person days | 136.0 | 14.43 | 1962.48 | |
Labour | Unskilled | Person days | 745.0 | 7.7 | 5736.5 | |
Equipment | Spade | Number | 20.0 | 0.0 | 0.0 | 100.0 |
Equipment | Shovel | Number | 20.0 | 0.0 | 0.0 | 100.0 |
Equipment | Plumbing tool kit | Kit box | 1.0 | 0.0 | 0.0 | 100.0 |
Plant material | Apple Plants | Number | 3300.0 | 0.087 | 287.1 | |
Construction material | Solar panel, pump with all accessories | sites | 2.0 | 6490.0 | 12980.0 | |
Construction material | Water storage, intake, distribution pipes and mulch | sites | 2.0 | 6861.0 | 13722.0 | |
Construction material | Drip irrigation | sites | 2.0 | 4173.0 | 8346.0 | |
Construction material | -Check basin (pits) | number | 3300.0 | 0.466 | 1537.8 | |
Total costs for establishment of the Technology | 44571.88 | |||||
Total costs for establishment of the Technology in USD | 44571.88 |
If land user bore less than 100% of costs, indicate who covered the remaining costs:
The technological package was designed and implemented by ICIMOD's Indus Basin Initiative with partners and contributes to the sustainable Development Investment Portfolio and is supported by the Australian Aid program.
Comments:
Establishment costs and inputs for a solar pump –drip irrigation - mulch system was estimated for apple orchards piloted on a 5 hectares of total land in two villages.
4.5 Maintenance/ recurrent activities
Activity | Timing/ frequency | |
---|---|---|
1. | Monitoring of water pumping, storage, and drip system by a regular visit to the site. | Regular (annually) |
2. | Repair and maintenance of solar pump panel and drip irrigation: fixing clogged drip lines and replacement of broken solar panel and cleaning of impellers of the solar pump. | Regular (annually) |
3. | Replacement of dead apple plants | As and when required |
4.6 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 | Unskilled | Number | 26.0 | 7.7 | 200.2 | |
Equipment | Spade | Number | 10.0 | 0.0 | 0.0 | 100.0 |
Equipment | Plumbing tool kit | Kit box | 1.0 | 0.0 | 0.0 | 100.0 |
Plant material | Apple ( replacement of dead plants) | number | 330.0 | 0.087 | 28.71 | |
Total costs for maintenance of the Technology | 228.91 | |||||
Total costs for maintenance of the Technology in USD | 228.91 |
4.7 Most important factors affecting the costs
Describe the most determinate factors affecting the costs:
Equipment and labor
5. Natural and human environment
5.1 Climate
Annual rainfall
- < 250 mm
- 251-500 mm
- 501-750 mm
- 751-1,000 mm
- 1,001-1,500 mm
- 1,501-2,000 mm
- 2,001-3,000 mm
- 3,001-4,000 mm
- > 4,000 mm
Specify average annual rainfall (if known), in mm:
150.00
Specifications/ comments on rainfall:
it varies from 150 mm to 200 mm
Indicate the name of the reference meteorological station considered:
Passu ghar
Agro-climatic zone
- arid
5.2 Topography
Slopes on average:
- flat (0-2%)
- gentle (3-5%)
- moderate (6-10%)
- rolling (11-15%)
- hilly (16-30%)
- steep (31-60%)
- very steep (>60%)
Landforms:
- plateau/plains
- ridges
- mountain slopes
- hill slopes
- footslopes
- valley floors
Altitudinal zone:
- 0-100 m a.s.l.
- 101-500 m a.s.l.
- 501-1,000 m a.s.l.
- 1,001-1,500 m a.s.l.
- 1,501-2,000 m a.s.l.
- 2,001-2,500 m a.s.l.
- 2,501-3,000 m a.s.l.
- 3,001-4,000 m a.s.l.
- > 4,000 m a.s.l.
Indicate if the Technology is specifically applied in:
- not relevant
5.3 Soils
Soil depth on average:
- very shallow (0-20 cm)
- shallow (21-50 cm)
- moderately deep (51-80 cm)
- deep (81-120 cm)
- very deep (> 120 cm)
Soil texture (topsoil):
- coarse/ light (sandy)
Soil texture (> 20 cm below surface):
- coarse/ light (sandy)
Topsoil organic matter:
- low (<1%)
5.4 Water availability and quality
Ground water table:
5-50 m
Availability of surface water:
good
Water quality (untreated):
for agricultural use only (irrigation)
Water quality refers to:
surface water
Is water salinity a problem?
No
Is flooding of the area occurring?
Yes
Regularity:
frequently
Comments and further specifications on water quality and quantity:
Water is available in the river but fields are higher up than river
5.5 Biodiversity
Species diversity:
- low
Habitat diversity:
- low
5.6 Characteristics of land users applying the Technology
Sedentary or nomadic:
- Semi-nomadic
Market orientation of production system:
- subsistence (self-supply)
Off-farm income:
- > 50% of all income
Relative level of wealth:
- average
Individuals or groups:
- groups/ community
Level of mechanization:
- manual work
- animal traction
Gender:
- men
Age of land users:
- middle-aged
Indicate other relevant characteristics of the land users:
Relative level of wealth: Poor 35 %, average 65%
5.7 Average area of land used by land users applying the Technology
- < 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
Is this considered small-, medium- or large-scale (referring to local context)?
- small-scale
5.8 Land ownership, land use rights, and water use rights
Land ownership:
- individual, titled
Land use rights:
- individual
Water use rights:
- communal (organized)
Are land use rights based on a traditional legal system?
Yes
Specify:
Most of the uncultivated land is communal, community decides uses of the land
5.9 Access to services and infrastructure
health:
- poor
- moderate
- good
education:
- poor
- moderate
- good
technical assistance:
- poor
- moderate
- good
employment (e.g. off-farm):
- poor
- moderate
- good
markets:
- poor
- moderate
- good
energy:
- poor
- moderate
- good
roads and transport:
- poor
- moderate
- good
drinking water and sanitation:
- poor
- moderate
- good
financial services:
- poor
- moderate
- good
6. Impacts and concluding statements
6.1 On-site impacts the Technology has shown
Socio-economic impacts
Production
production area
Quantity after SLM:
5 ha
Comments/ specify:
Production area increased as uncultivated land brought under cultivation, but crop production has not increased yet because orchard just established.
energy generation
Comments/ specify:
Use of renewable solar energy for fruit cultivation
Water availability and quality
irrigation water availability
Comments/ specify:
Irrigation water availability increased with innovative technological packages.
Socio-cultural impacts
community institutions
Comments/ specify:
Community institution (village development organizations) strengthened due to the approach of farming in a group.
SLM/ land degradation knowledge
Comments/ specify:
Land management skills of community enhanced due to various training such as crop cultivation, operation and maintenance of water conservation and management technologies.
Ecological impacts
Soil
soil moisture
Comments/ specify:
Improved soil moisture as a result of water harvesting pits, mulching and efficient drip irrigation.
soil cover
Comments/ specify:
improved soil cover due to mulch.
soil loss
Comments/ specify:
Reduced soil loss ( from wind and water erosion) due to application of mulch and also due to vegetation cover and above-ground biomass.
Other ecological impacts
Comments/ specify:
The technological package is climate change resilient as compared to the melt water dependant surface flood irrigation. Melt water of glacier and snow is very sensitive to climate change. Glaciers are dynamic, their depth and volume fluctuation happens each year.
6.2 Off-site impacts the Technology has shown
downstream flooding
Comments/ specify:
Reduced risk of downstream flooding though the amount is very less.
6.3 Exposure and sensitivity of the Technology to gradual climate change and climate-related extremes/ disasters (as perceived by land users)
Climate-related extremes (disasters)
Meteorological disasters
How does the Technology cope with it? | |
---|---|
local windstorm | well |
Climatological disasters
How does the Technology cope with it? | |
---|---|
extreme winter conditions | well |
drought | well |
Hydrological disasters
How does the Technology cope with it? | |
---|---|
flash flood | moderately |
Other climate-related extremes (disasters)
other (specify) | How does the Technology cope with it? |
---|---|
Heavy load of suspended river sediment | well |
Comments:
Drip is sensitive to temperature increase; but tolerant to wind storms/dust storms and floods. Solar panel is tolerant to temperature increase.
The solar panel is sensitive to wind storm. The pump is sensitive to flood and sediment load in the river, emitters of drip clog due to sediment. Mulch is sensitive to windstorm. Apple plants at an earlier stage are sensitive to wind storm, plants are sensitive to extreme winter conditions (low temp and snowfall)
6.4 Cost-benefit analysis
How do the benefits compare with the establishment costs (from land users’ perspective)?
Short-term returns:
negative
Long-term returns:
positive
How do the benefits compare with the maintenance/ recurrent costs (from land users' perspective)?
Short-term returns:
negative
Long-term returns:
very positive
Comments:
The initial cost of investment would be fully recovered in 10.9 years, hence the payback period of the project is around 11 years, and the repayment of the investment would start from the eight years. Benefit-Cost Ratio is found to be 4.96.
6.5 Adoption of the Technology
- 1-10%
If available, quantify (no. of households and/ or area covered):
45 Households
Comments:
None
6.6 Adaptation
Has the Technology been modified recently to adapt to changing conditions?
Yes
If yes, indicate to which changing conditions it was adapted:
- climatic change/ extremes
Specify adaptation of the Technology (design, material/ species, etc.):
Due to heavy load of suspended sediment flowing in the Hunza River, impellers of the solar pump couldn’t function properly. Site-specific customiza-tion of the pump was carried out to make the system functional and to sustain it in the long run.
For that, an outer filter was developed for the pump to avoid sediment entry into the pump. The outer filter is UPVC pipe (of 10-inch diameter and 13 ft long) wrapped with a finely-meshed green net. The out filter was tightly bound together with the pump. The filter with the pump was placed in the river, transverse to the direction of flow. The farmers are also trained to open the clogged drip to release the sediments from time to time.
Damaged solar panel sometimes was replaced. A portion of mulch was buried under the soil. Apple plants were tied together with support stakes. Application of mulch helped to protect apple plants from low winter temperature.
6.7 Strengths/ advantages/ opportunities of the Technology
Strengths/ advantages/ opportunities in the land user’s view |
---|
The solar powered water lifting and drip irrigation is the first of its kind in the upper Indus basin. The system is simple and anyone once trained can operate it. It will contribute to nearly 50% of the additional income of the Passu community. |
The technological package is environmentally friendly and are effective adaptation measures in the context of climate change. |
Women are often most involved in agricultural activities and this intervention has provided them relief by making it possible for them to work nearer to their valley. More over, once the trees bear fruit, women will be able to sell them to generate income. |
Strengths/ advantages/ opportunities in the compiler’s or other key resource person’s view |
---|
The first innovative technological package in GB that is climate-resilient as compare to meltwater-dependent flood irrigation is operated by renewable solar energy. |
Water application through drip irrigation is very efficient as compared to flood irrigation, per plant water applied trough drip is 2 litres/day as compared to 30 litres/day through flood irrigation. Integration of mulch enhances soil moisture. |
The technological package can last more than 20 years. Maintenance cost is nominal, it is US$ 100 at the initial stage and later stage it is US$ 300. |
As women are predominantly responsible for farming activities, im-proved water access and application through drip reduces their work-load and frees up time for other activities |
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? |
---|---|
Frequent maintenance operation and maintenance of the solar pump due to high sediment concentration of the river from where water is pumped. | Include capacity building activities as an integral part of the technology implementation process. |
Drip irrigation and parts of solar panel may not available locally | A spare parts should be made available locally for immediate replacement as and when required. |
Weaknesses/ disadvantages/ risks in the compiler’s or other key resource person’s view | How can they be overcome? |
---|---|
The investment cost is high . | Explain cost-benefit analysis to aware farmers that the benefit is high in the long run. |
Techniques of multiple cropping were not practised to get short term benefits from the orchard field. | Engage the agricultural department to demonstrate and train farmers on multiple cropping in the dry land. |
7. References and links
7.1 Methods/ sources of information
- field visits, field surveys
Field visits was done several times as this was a part of the project activity. Cost benefit analysis was done in 2019.
- interviews with land users
Frequently with beneficiaries of the SLM technological packages (around 50 households) .
7.2 References to available publications
Title, author, year, ISBN:
ICIMOD 2017. An Innovative Approach to Agricultural Water Management in the Upper Indus basin: the Water_Energy-Food Nexus at the Local Level
Available from where? Costs?
http://lib.icimod.org/record/32794/files/Innovative%20Approach.pdf
Title, author, year, ISBN:
Kifayat, U., Khan, F. A., & Ejaz, A. (2014). Determinants of poverty in the mountain region of Gilgit-Baltistan, Pakistan. Developing Country Studies, 4(7), 10-19.
Available from where? Costs?
Google scholar
Title, author, year, ISBN:
Amjad Ali 2019. Unpublished report on cost-benefit analysis of UIB phase 1 intervention in Upper Hunza
Available from where? Costs?
ICIMOD
7.4 General comments
It has been improved a lot as compared to past 10 years .
Links and modules
Expand all Collapse allLinks
No links
Modules
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