Using drip irrigation systems with natural water pressure
| Title | Using drip irrigation systems with natural water pressure |
|---|---|
| Category of tools | Drip irrigation system |
| Usability of practice for adaptation to climate change | High |
| Implemented by | Research and Development Institute of Irrigation and Water Issues with Tashkent Institute of Irrigation and Reclamation |
| Used by |
Country: Uzbekistan Province: Namangan Region District: Pap District |
| Local specifics |
Foothill droughty area; extremely water pervious soils with pebble bed; the site is located below the Zhijdalisoj Water Reservoir |
| Practice usage period |
Start date: 01.01.2013 End date: 31.12.2014 |
| Problem solved through this practice |
Irrational use of irrigation water and fertilizers; deficit of electric power; low soil bonitet; poor crops productivity; poor quality of agricultural products; soil erosion |
| Tools used in the practice |
Free-flow drip irrigation system (DIS) |
| Description of the practice and its results |
Actions: Free-flow DIS was installed at the Zhijdalisoj Water Reservoir and was connected to the already operating gravity irrigation piping network. Due to the elevation difference between the pipe inlet and outlet (at the point of entry to the irrigated site) the system generates natural water pressure allowing free-flow DISs installed in gardens to operate without any pumping equipment, i.e. electricity. Results: Technical: thanks to free-flow DIS, water and fertilizers are distributed evenly, strictly according to corresponding norms, in due time and economically (water saving - up to 50%). Financial and economic: increased (by 30-40%) crop yields and improved yield quality. 350,000 sum/ha ($150/ha) saved due to electricity saving and no need to repair pumping equipment. |
| Lessons learnt and recommendations made |
Lessons learnt: Application of natural (gravity-based) water pressure allows making DISs more affordable for farms located on slope acreage of mountain foothills. Recommendations: It is necessary to carry out research to identify locations where free-flow DISs could work thanks to natural water pressure. |
| Source of practice |
Domestic tools (outcomes of research by domestic R&D organizations) |
| Readiness for implementation |
1. Cost of implementation: Moderate 2. Approximate cost of investment per 1 ha: $2-2.5,000 3. O&M costs: Moderate 4. Expert support: Needed at implementation stage |
| Brief information on the project |
Project title: Innovative science and technological work “Introduction of DISs using natural water pressure in areas adjacent to foothill water reservoirs”. Project duration: 2013-2014. Project goal and objectives: create DISs operating without pumping equipment. Project beneficiaries: employees of Zhijdalisoj Water Reservoir of the Naryn-Syr Darya BISA (Basin Irrigation System Administration). Project implementer: State Committee on Science and Technology of the Republic of Uzbekistan (SCST of the RUz). |
| Funding source | Asian Development Bank (ADB) on the shared basis with the SCST of the RUz |
| Form submission date | 30.04.2018 |
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