Comparison of practices

Use of water resources

Use of water resources

Country: Kazakhstan

Province: Jambyl Region

Country: Tajikistan

Province: Districts of Republican Subordination

District: Shahrinaw

Other settlement: Mirob” Water User Association (WUA)

The site is located in the foothills with significant difference in elevation

Mirob WUA is located in the Kafirnigan and Varzob River Basins (river catchment areas); deep (below 3 m) ground water occurrence; middle loamy soils

Start date: 01.01.2006

End date: 31.12.2007

Start date: 01.01.2012

End date: 31.12.2013

Water erosion, discharge, uneven distribution of irrigation water, poor yields

Need to enhance water use planning and water consumption calculation techniques for agricultural crops with the account of climatic conditions and crop development phases based on decade water use planning hydro-modules proceeding from precipitation availability.

Technique and technology for irrigation based on Simultaneous Impulse Sprinkling Kit (KSID-10S)

CROPWAT 8.0 Software

Actions:

Deployment of the Simultaneous Impulse Sprinkling Kit (KSID-10S) allowing extremely uniform and simultaneous dispersion of irrigation water across all sections of arable pasture or hayfield meadow.  Water expenditure at the impulse device makes 0.05-0.3 l/sec and 0.25-2.0 l/sec in the irrigation pipeline, thus, reducing (3-4 times) the costs associated with the pipeline network installation compared to other sprinkling systems (kits). The pipeline network is built of 15-25 mm diameter pipes easy to transport and assemble in mountainous conditions.

Technical characteristics:

Operation modes: automatic and manual

Irrigated area: 10 ha

Water consumption: up to 100 m³/day

Average sprinkling (rain) intensity: 0.002-0.008 mm/min

EFFICIENCY: 99%

MOC: 98%

Watering automation level: 100%

Results:

• Ensured water supply according to crops requirements with the account of changing weather conditions and moisture deposits in active soil layer;
• Elimination of : 1) water-induced soil erosion, 2) puddling and 3) discharge run-off;
• No need for water recirculation among irrigation sections.

Actions:

• Analysis of existing methods of water resources use planning in dekhan farms of the Gissar Valley;
• Designing a water use planning technique with the account of irrigation patterns in dekhan farms.

Results:

Financial and economic:

effective use of irrigation water; reduced water consumption per harvest unit.

Ecological:

improved ecological and reclamation condition of irrigated land.

Technical:

executed decade hydro-modules based on precipitation availability allowing dekhan farms to plan their water consumption and draw up crop irrigation schedules depending on expected weather conditions in the Gissar Valley as well as to coordinate other technological and weather-dependent processes associated with crops cultivation.

Social:

prevention of conflicts, controversies and misunderstanding among water users related to irrigation water distribution.

Lessons learnt:

The advantages of impulse sprinkling irrigation were confirmed by the research efforts on other test sites of KAZNIIVKh in Jambyl Region that allowed increasing biological productivity of Golden Delicious apple variety by 10.1-36.8%, and commercial productivity – by 16.6-49.4% compared to conventional sprinkling irrigation systems.

Recommendations:

It is necessary to continue application of similar practices in foothill areas in Central Asia subject to power supply shortages.

Lessons learnt:

CROPWAT 8.0 Software allows enhancing the technology of water use planning via specification of irrigation modes depending on expected precipitation availability.

Recommendations:

It is necessary to widely apply CROPWAT 8.0 Software.

Domestic tools (outcomes of research by domestic R&D organizations)

Foreign tools (transfer of foreign experience)

1. Cost of implementation: High

2. Approximate cost of investment per 1 ha:

3. O&M costs: High

4. Expert support: Not needed

1. Cost of implementation: High

2. Approximate cost of investment per 1 ha:

3. O&M costs: High

4. Expert support: Not needed

Project title: Improving water use planning technology based on CROPWAT 8.0 Software.

Project duration: 2012-2013.

Project goal and objectives: design a science-based water use planning technique using CROPWAT 8.0 Software to calculate water consumption for different crops with the account of climatic conditions and crops development phases based on decade water use planning hydro-modules proceeding from precipitation availability.

Project beneficiaries: water users of Mirob WUA.

Project implementer: Sh. Shotemur TAU.

Report by the Operation of Hydro and Reclamation Systems Chair of Sh. Shotemur TAU, Dushanbe, 2013, 46 p.

SIC ICWC

SC ICWC