Сравнение практик

• Use of water resources
• Use of land resources

Страна: Казахстан

Область: Жамбылская

Район: Таласский

Другой населенный пункт: Village of Sadu Shakirov

Страна: Узбекистан

Область: Хорезмская

Район: Урганчский

The site is located in the desert foothill plain in South-ern Kazakhstan (internal drain area) at the very end of Sharuashlyk Irrigation Canal.

Khorezm Region lies in the northwest of Uzbekistan (between the latitudes of 40N and 42N and longitudes of 60E and 62E). The Region stretches for 280 km from northwest to southeast, and for 80 km – from west to east. The adyr relief is mainly formed by moist-type playa and, to a lesser extent, by meadow and grey-dessert soils; the depressions relief is formed by sands.

Дата начала: 01.05.2008

Дата окончания: 30.04.2009

Дата начала: 01.01.2004

Дата окончания: 31.12.2016

Acute water shortage; land degradation in the village of Sadu Shakirov; abandoned irrigated arable lands used only for year-round cattle grazing.

For a long time, the irrigation canal was not operation-al and, thus, became dilapidated. The situation in the area was aggravated by climate change impacts (de-creased quantity of early spring, summer and winter precipitation, increased average annual temperature, spring and autumn frost bites and summer droughts).

Inefficient field-level use of irrigation water

Method of autumn and winter water-charging irrigation

Technology of furrow-based counter irrigation

Actions:
1) Reconstruction of the canal, stop-gates and field irrigation networks (rehabilitation of irrigation furrows),
2) Setting up artificial pastures with forage crops

Results:

Financial and economic:
Using water-charging irrigation for rangelands allowed increasing their productivity from 3.5 to 5 dt/ha and receiving 60 tons of herbage for cattle and sheep and goats from non-cultivated land.

Technical:
1) 12 km of the canal and 5 stop-gates to regulate water releases restored,
2) 5 km of irrigation furrows built,
3) Cultivated pastures with forage crops created (soil preparation, alfaalfa planting, coordination of irrigation norms),
4) Fields are prepared during the summer-fall period, and watered during late fall or early spring.

Technology applicability

In the majority of Central Asian countries, irrigated agriculture is based on flooding irrigation (ex.: wheat) and/or furrow-based irrigation (other crops).  Against the background of climate change and global water shortage, the traditional and/or currently practiced irrigation methods have lost their relevance and are no longer justified, in particular, in the Aral Sea area.  In addition, watering the whole field of uneven relief based on traditional furrow-based technique requires long time. In many cases, traditional watering leads to uneven water distribution (alternating dry and bogging spots) across the field and rising ground water level.  The suggested technology of counter irrigation is suitable for watering areas with even/flat relief, i.e. flat/lowland territories of Central Asian countries.

Technology description

The technology is quite simple and consists of simultaneous irrigation of a field from two sides.  It was appraised in Uzbekistan’s northwestern part within the framework of the ZEF/UNESCO Project.  The technology’s pilot application demonstrated that furrow-based counter irrigation can be used as a technical option of irrigating undeviating (even) sites and increases water efficiency due to more uniform water distribution along furrows.  This effective water-conservation technology has been already widely tested in Central Asian countries, including Uzbekistan (Syr Darya and Khorezm Regions) by SANIIRI.

Advantages

• Water-saving – results of the system’s field pilot testing show that compared to traditional furrow-based irrigation counter watering allows saving up to 20% of irrigation water during vegetation season;
• Decreased seasonal land salination at furrow ends – land salination at furrow ends due to poor absorption of irrigation water and high capillarity can be reduced by half;
• Increased yields – application of the method allows increasing crop yields in general by 30-35%, and specifically for cotton – by 0.5 tons/ha;
• Application and design enhancements of furrow-based irrigation (discharge optimizing, washing irrigation, field laser planning) allow increasing the technology’s efficiency from the current 45% up to 65%.

Lessons learnt:
Application of water-charging irrigation allowed in-creasing water availability and, as the result, productivity of agricultural crops.

Application of water-charging irrigation demonstrated the efficiency of water use and allowed local popula-tion to go through winter without losing livestock.

Recommendations:
The method can be used in areas/communities where along with crop growing the population is also involved in livestock breeding.

Lessons learnt:

The furrow-based counter irrigation technology is rather simple (entails simultaneous irrigation of a field from both sides) and represents a justified technical option of irrigating undeviating (even) relief land and increasing water efficiency due to more uniform water distribution along furrows.

Recommendations:

The irrigation technology is recommended for application by farmers prior to controlling ground water level and enhancing land reclamation condition via more radical measures.  Under the condition of available investment, this watering method can be widely introduced on engineered basis.

Traditional tools transferred from generation to generation that proved their efficiency in modern conditions

• Traditional tools transferred from generation to generation that proved their efficiency in modern conditions
• Domestic tools (outcomes of research by domestic R&D organizations)

1. Затраты на внедрение: Высокие

2. Примерная стоимость капиталовложений на 1 га:

3. Затраты на поддержание и эксплуатацию: Высокие

4. Экспертная поддержка: Не требуется

1. Затраты на внедрение: Высокие

2. Примерная стоимость капиталовложений на 1 га:

3. Затраты на поддержание и эксплуатацию: Высокие

4. Экспертная поддержка: Не требуется

Project title: Fall and early spring Irrigation of arable land and pastures as an adaptation mechanism of ra-tional water use in Southern Kazakhstan

Duration: May 1, 2008 – April 30, 2009

Project goal and objectives: reduce land degradation due to climate change by way of rational use of irriga-tion water. The project was implemented to prevent loss of cattle due to forage shortage during alternating droughty years.

Project beneficiaries: local population.

Project implementer: Kogal LLC

Project beneficiaries: water consumers and WUAs.

 Project implementer: Central Asian Research Institute of Irrigation (SANIIRI)

1) UNDP Compilation “Climate change adaptation: ex-amples from Uzbekistan and Kazakhstan”, Tashkent 2012;
2) pandia.org

1) Reference Book on climatically optimized investment in rural areas of the Aral Sea Basin (based on the examples of Uzbekistan and Tajikistan), Tashkent 2016;

2) Paluashova, G.K., Shirokova, Yu.I. “Efficiency of furrow-based counter irrigation of cotton in Khorezm conditions” (http://www.cawater-info.net/bk /improvement- irrigated-agriculture/files/paluashova-shirokova.pdf);

3) Paluashova, G. (2005), “Investigating land saline regime due to changed irrigation technology in the conditions of Khorezm Oasis.  Materials of “Scientific Support as a Factor of Sustainable Water Sector Development” International Research and Applied Conference (Taraz, Kazakhstan).

SIC ICWC

SIC ICWC