Technologies

Urine application through drip irrigation for bitter gourd production [Nepal]

Karela kheti ma thopa sinchai ko satha ma pasu mutra ko prayog (Nepali)

technologies_1751 - Nepal

Completeness: 63%

1. 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:
SLM specialist:

Director

Soil Management Directorate, Department of Agriculture

Nepal

SLM specialist:

Team Leader

Sustainable Soil Management Programme

Nepal

Name of project which facilitated the documentation/ evaluation of the Technology (if relevant)
Sustainable Soil Management Programme, Nepal (SSMP)
Name of the institution(s) which facilitated the documentation/ evaluation of the Technology (if relevant)
Department of Agriculture, Soil Management Directorate, Hariharbhawan Lalitpur (doasoil) - Nepal
Name of the institution(s) which facilitated the documentation/ evaluation of the Technology (if relevant)
HELVETAS (Swiss Intercooperation)

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:

Ja

1.5 Reference to Questionnaire(s) on SLM Approaches (documented using WOCAT)

Farmer-to-farmer diffusion
approaches

Farmer-to-farmer diffusion [Nepal]

Wider diffusion of sustainable soil management technologies through a demand responsive farmer-to-farmer diffusion approach

  • Compiler: Richard Allen

2. Description of the SLM Technology

2.1 Short description of the Technology

Definition of the Technology:

Application of cattle urine through drip irrigation technology to provide constant flow of fertiliser to bitter gourd

2.2 Detailed description of the Technology

Description:

Bitter gourd vegetables fetch a high price in the off-season and respond well if grown with drip irrigation. This crop is planted in December/January and harvested from May through to July/August. The growing period mainly falls in the driest period of the year and therefore requires irrigation.
In addition to water, the plants need fertiliser to ensure healthy growth and good production. Nitrogen is the most important macronutrient for plants and high crop productivity can only be achieved if sufficient nitrogen is available. Nitrogen is also the most limiting nutrient in most areas of Nepal’s midhills. Traditionally farmers applied farmyard manure; but in many places this is being supplemented or entirely replaced by inorganic fertiliser, mainly urea. However, fertiliser prices have increased substantially in recent years and this type of fertiliser is often not available in sufficient quantities in areas away from the roadheads. At the same time cultivation practices are intensifying with greater cropping intensities and more nutrient demanding crops as local varieties are replaced by hybrids and new crops are introduced. This can easily lead to nutrient mining and soil fertility decline unless there is an equivalent increase in inorganic or mineral fertilisation.
Cattle urine is a viable alternative to mineral fertiliser; it is nitrogen rich. The urine is collected in improved cattle sheds (fact sheet on urine collection QT NEP1). For constant fertiliser application and to reduce the water requirement, the collected urine can be added to the irrigation water in the drip irrigation tanks (fertigation). Farmers who have tried this say it has increased the yield of bitter gourd and other cash crops, in some cases by as much as 100%. Other crops that can be grown using drip irrigation with a water-urine mixture are cauliflower, cucumber, and other types of gourd.

2.3 Photos of the Technology

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

Country:

Nepal

Further specification of location:

Midhills districts of Nepal

Specify the spread of the Technology:
  • evenly spread over an area

3. Classification of the SLM Technology

3.1 Main purpose(s) of the Technology

  • improve production

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

Cropland

Cropland

  • Annual cropping
Annual cropping - Specify crops:
  • vegetables - melon, pumpkin, squash or gourd
Comments:

Major land use problems (compiler’s opinion): Intensifying cultivation practices with either 1) inadequate application of fertilisers leading to a decline in soil fertility and the mining of soil nutrients or 2) application of too much fertiliser causing environmental problems through excessive leaching, and losses of fertiliser in surface runoff and consequent eutrophication or nitrification of streams, ponds, or groundwater. Also, irrigation water is in short supply during 6 to 8 months of the year. Fertigation allows about 20 to 30% of the irrigation water to be replaced by urine.

3.5 SLM group to which the Technology belongs

  • integrated soil fertility management

3.6 SLM measures comprising the Technology

management measures

management measures

  • M2: Change of management/ intensity level

3.7 Main types of land degradation addressed by the Technology

chemical soil deterioration

chemical soil deterioration

  • Cn: fertility decline and reduced organic matter content (not caused by erosion)

3.8 Prevention, reduction, or restoration of land degradation

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

4. Technical specifications, implementation activities, inputs, and costs

4.1 Technical drawing of the Technology

Technical specifications (related to technical drawing):

The following setup was used in Iman Singh Basnet’s fi eld:
- two drip irrigation sets: one set with
8 lines, one with 4 lines
- a 200 l plastic drum
- 20 bitter gourd plants per line with
1.5m spacing between lines
- approximate area covered: 200m2
Note that the drum was not delivered with the drip irrigation set. Mr Basnet uses the same drum for irrigating other crops where drip irrigation is not feasible, in which case he connects a pipe with a rose to the drum.

Technical knowledge required for field staff / advisors: low

Technical knowledge required for land users: low

Main technical functions: supplementary irrigation, constant and slow supply of nutrients, increase in soil fertility & increase in soil productivity

Secondary technical functions: pest control

4.2 General information regarding the calculation of inputs and costs

Specify how costs and inputs were calculated:
  • per Technology unit
Specify unit:

Drip irrigation system

Specify dimensions of unit (if relevant):

200 l plastic drum; 20 bitter gourd plants per line with 1.5m spacing between lines

Specify currency used for cost calculations:
  • USD
Indicate average wage cost of hired labour per day:

2.00

4.3 Establishment activities

Activity Timing (season)
1. Prepare and place stakes
2. Collect urine (see WOCAT fact sheet ‘Improved cattle shed for improved urine collection – QT NEP1)
3. Grow bitter gourd seedlings
4. Set up drip irrigation set and prepare field
5. Transplant seedlings

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 Collect urine and prepare irrigation system persons/unit 2.0 2.0 4.0 100.0
Equipment Drip set unit 1.0 36.0 36.0 100.0
Equipment Drum unit 1.0 4.0 4.0 100.0
Construction material Stakes unit 1.0 6.0 6.0 100.0
Total costs for establishment of the Technology 50.0
Total costs for establishment of the Technology in USD 50.0
Comments:

Duration of establishment phase: 1 month(s)

4.5 Maintenance/ recurrent activities

Activity Timing/ frequency
1. Clear drip holes
2. Double filter the urine – once when taking out of the collection tank, and again when pouring into the drip irrigation tank
3. Irrigate every alternate day with 160 l water and 40 l urine.
4. Fix shoots to the stakes
5. Raise ridges for better irrigation efficiency
6. Harvest the crop

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 Maintain drip irrigatio nsystem and apply urine persons/unit 15.0 2.0 30.0 100.0
Total costs for maintenance of the Technology 30.0
Total costs for maintenance of the Technology in USD 30.0
Comments:

Cost calculated in January 2007.

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
Agro-climatic zone
  • humid

Thermal climate class: subtropics

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.
Comments and further specifications on topography:

Landforms: Also valley floors

5.6 Characteristics of land users applying the Technology

Market orientation of production system:
  • subsistence (self-supply)
  • commercial/ market
Individuals or groups:
  • individual/ household
Indicate other relevant characteristics of the land users:

Off-farm income specification: In most farm households, off-farm income plays at least a minor and increasingly a major role. Occasional opportunities for off-farm income present themselves in the form of daily labour wages. Some households’ members receive regular salaries, whilst an increasing number of Nepalis are working in India, the Middle East, Malaysia, and elsewhere and sending remittance incomes home.

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

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

Land ownership:
  • individual, not titled
Land use rights:
  • leased
  • individual

6. Impacts and concluding statements

6.1 On-site impacts the Technology has shown

Socio-economic impacts

Production

crop production

decreased
increased
Income and costs

expenses on agricultural inputs

increased
decreased
Comments/ specify:

reduced expenses for agrochemicals (fertilisers, pesticides)

Other socio-economic impacts

Allows organic production of high value crops

disabled
enabled

establishment costs

high
low

Socio-cultural impacts

social prestige as a progressive farmer

decreased
increased

requires handling of dung and urine

increased
decreased

Ecological impacts

Other ecological impacts

application of agrochemicals (fertilisers, pesticides)

improved
reduced

eutrophication, nitrification of water bodies due to uncontrolled outflow of urine

increased
decreased

6.2 Off-site impacts the Technology has shown

groundwater/ river pollution

increased
reduced
Comments/ specify:

reduced influx of nutrients into water bodies

dependence on costly external inputs

improved
reduced

6.4 Cost-benefit analysis

How do the benefits compare with the establishment costs (from land users’ perspective)?
Short-term returns:

positive

Long-term returns:

positive

How do the benefits compare with the maintenance/ recurrent costs (from land users' perspective)?
Short-term returns:

positive

Long-term returns:

positive

Comments:

The high cost of mineral fertiliser and the high price that bitter gourd fetches means that the establishment costs are soon recovered. In the long-term, a major reduction in fertiliser costs and improved income leads to increased benefits.

6.5 Adoption of the Technology

  • single cases/ experimental
Of all those who have adopted the Technology, how many did so spontaneously, i.e. without receiving any material incentives/ payments?
  • 91-100%
Comments:

Comments on spontaneous adoption: Some farmers in Surkhet district started to use the technology in 2006, after seeing Iman Singh Basnet's innovation of applying urine through drip irrigation in 2005.

6.7 Strengths/ advantages/ opportunities of the Technology

Strengths/ advantages/ opportunities in the compiler’s or other key resource person’s view
Urine as a liquid manure is applied at the same time as irrigation (fertigation)

How can they be sustained / enhanced? The link between urine application and drip irrigation
or other forms of small scale irrigation needs to be promoted
The on-farm use of collected urine reduced the need for mineral fertiliser thereby reducing cash expenditure and outside dependency

How can they be sustained / enhanced? Further promote the technology to increase this impact
Human urine can also be used, but needs to be fermented longer and may be socially less acceptable

How can they be sustained / enhanced? Further promote the use of urine and show that
there is no problem with using human urine

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

Weaknesses/ disadvantages/ risks in the compiler’s or other key resource person’s view How can they be overcome?
The initial establishment costs for a drip irrigation set may hinder adoption Prepare a business plan and calculate the cost-benefi t to
convince farmers of the technology’s benefi ts
Lack of availability of urine may inhibit the commercial application of urine with drip irrigation Urine needs to be established as a tradeable good produced by livestock farmers and bought by vegetable farmers to apply to their crops

7. References and links

7.1 Methods/ sources of information

Links and modules

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