Comparison of practices

Use of water resources

• Use of water resources
• Use of land resources
• Environmental protection

Country: Tajikistan

Province: Khatlon Region

District: Jilikul

Country: Uzbekistan

Province: Fergana Region

District: Kuva District

Other settlement: Khamroli-Ota Farm

• Located in the valley part of the Vakhsh River Basin (river catchment area);
• Deep (below 3 meters) ground water occurrence;
• Middle loamy soils.

The site is located in the zone of ground water shallow occurrence

Start date: 01.04.2010

End date: 31.10.2011

Start date: 01.01.2010

End date: 31.12.2012

Uneven distribution of irrigation water, lack of water accounting means to ensure observance of recommended irrigation norms for cotton

Flooding of settlements; salination of irrigated land

Tubular water outlet flowmeter

GIS-technologies and remote-sensing tools

Actions:

- Construction of tubular water outlet flowmeter with removable nozzles (procurement of polyethylene piping to make tubular water outlets and matching nozzles);
- Installation of tubular water outlet flowmeter along temporary sprinklers. 

Results:

Financial and economic:

saving of irrigation water; low cost of irrigation system automation (total kit cost: $500/ha) with the service life of 5 years. 

Technical:

simple design allowing a more even distribution of irrigation water stream among furrows, thus, ensuring the prescribed water supply mode.

Social:

improved working conditions of irrigators; lower labor needs/costs; enhanced mutual trust among farmers and water users.

In 1980, specialists of NPO SANIIRI (Research and Development Association “Central Asian Research Institute of Irrigation”) designed and for the first time applied this type of drainage in the Qarshi Steppe where it demonstrated its efficiency.  The project was suspended due to lack of funding.  The re-launch of the project and installment of a combined drainage system in Kuva District (2010) once again confirmed its high efficiency and profitability, especially in areas of confined underground waters.  Further on, the model was applied in Rishtan, Altyarik and Baghdad Districts where it is successfully working.

Actions:

1. reconstruction of the open collector;
2. construction of the combined drainage system;
3. operation of the combined drainage system;
4. consultations with local experts on designing and constructing combined drainage systems;
5. holding a training for Basin Irrigation System Administration (BISA) and Reclamation Expedition (RE) personnel on combined drainage system operation;
6. development and distribution of training materials.

Results:

Financial and economic:

Specific construction costs (sum/ha) of the combined drainage system were twice less compared to horizontal drainage models.  Vertical drainage of 1 hectare of land requires 700-800 kWh of energy, whereas the combined drainage is hyperpiestic.  Maintenance costs for combined drainage systems are also much lower compared to horizontal and vertical drainage models – specifically, twofold less than for closed horizontal and threefold less for vertical. The combined drainage systems also allowed increasing crops productivity.

Technical:

The reclamation condition of farm land has improved.

Lessons learnt:

Installation and deployment of tubular water outlet flowmeter allows to improve the uniformity of irrigation stream’s distribution among furrows and conduct irrigation water accounting.

Recommendations:

It is necessary to widely use the small-scale irrigation automation means like the tubular water outlet flowmeters which have simple design, are convenient to operate, are low-cost and mobile and ensure supply of the prescribed amount of irrigation water.

Lessons learnt:

The practice has confirmed its high efficiency and profitability of combined-type drainage, especially in areas with confined underground water.

Recommendations:

It is necessary to widely apply combined-type drainage where hydro-geological conditions allow it.

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

R&D product by NPO SANIIRI (Research and Development Association “Central Asian Research Institute of Irrigation”)

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: Watering technology based on tubular water outlet flowmeters.

Project duration: Apr 2010-Oct 2011.

Project goal and objectives: development and deployment of a crop watering technology for dekhan farms of the Republic of Tajikistan allowing to significantly increase the efficiency of water use.

Project beneficiaries: members of “Istikol” WUA (Water User Association).

Project implementer: Institute of Water Issues, Hydropower and Ecology of the Academy of Sciences of the RTj

Project title: Application of GIS-technologies for reclamation.

Project duration: Jan 2010-Dec 2012 (3 years).

Project goal and objectives: comprehensive support of Reclamation Expedition (RE) specialists; introduction of new technologies; enhancing RE technical capacities to ensure a more expedient implementation of projects to improve the reclamation condition of irrigated land with the aim of receiving better agricultural yields with the simultaneous maintenance of environmental equilibrium in the area.

Project beneficiaries: Fergana Region and Syr Daria Region Reclamation Expeditions.

Project implementer: Management Department of the Foundation for Reclamation Improvement of Irrigated Land.

Report by the Innovation Technology Department of the IWIHE of the AS of the RTj, Dushanbe, 2012, 45 p.

Ekologicheski Vestnik (Environmental Digest) Journal,

Issue 11, 2012 (http://lrf.uz/?p=283&lang=ru).

SIC ICWC

SIC ICWC