Comparison of practices

• Use of water resources
• Use of land resources

• Use of water resources
• Use of land resources

Country: Kazakhstan

Province: South Kazakhstan Region

District: Maktaaral District

Country: Kazakhstan

Province: South Kazakhstan Region

District: Maktaaral District

• Upstream (Ferghana) and midstream (Syr Darya) of the Syr Darya River
• Ebb occurrence of highly mineralized ground water

• Upstream (Ferghana) and midstream (Syr Darya) of the Syr Darya River
• Ebb occurrence of highly mineralized ground water

Start date: 01.01.1965

End date: 31.12.1975

Start date: 01.01.1965

End date: 31.12.1975

Deterioration of reclamation situation: rising of ground water, land salination

Deterioration of reclamation situation: rising of ground water, land salination

Technique and technology of land reclamation via a system of vertical drainage wells (VDW)

Technique and technology of land reclamation via a system of vertical drainage wells (VDW)

Actions:

A VDW system set up. Prior to its installation, the area was drained via a horizontal open-type drain-age network ineffective as to reducing the mass of salinized land.

Comprehensive VDW efforts significantly enhanced drainage.

However, currently due to the absence of a single organization responsible for VDW operation, maintenance and repair, the VDW systems recon-structed under World Bank and Asian Development Bank projects do not perform as effectively as ini-tially.

Results:

Financial and economic:
Increased cotton yields (from 10-15 up to 30-35 dt/ha).

Technical:
Successful response to land salination in 3 districts: ground water table steadily kept at 2-3 m depth leading to a sharp contraction of salinized land area.

Actions:

A VDW system set up. Prior to its installation, the area was drained via a horizontal open-type drain-age network ineffective as to reducing the mass of salinized land.

Comprehensive VDW efforts significantly enhanced drainage.

However, currently due to the absence of a single organization responsible for VDW operation, maintenance and repair, the VDW systems recon-structed under World Bank and Asian Development Bank projects do not perform as effectively as ini-tially.

Results:

Financial and economic:
Increased cotton yields (from 10-15 up to 30-35 dt/ha).

Technical:
Successful response to land salination in 3 districts: ground water table steadily kept at 2-3 m depth leading to a sharp contraction of salinized land area.

Lessons learnt:

In due time, the model proved useful and timely, as the country urgently needed to increase its cotton yields. The practice demonstrated high efficiency of VDW in combatting land salination.

Recommendations:

1. Establish a special VDW System Maintenance and Operation Department;
2. Build personnel capacity:
• Continual training of personnel in the Department and Provincial Hydrogeological and Land Reclamation Expedition;
• Drafting and distribution of training materi-als.

Lessons learnt:

In due time, the model proved useful and timely, as the country urgently needed to increase its cotton yields. The practice demonstrated high efficiency of VDW in combatting land salination.

Recommendations:

1. Establish a special VDW System Maintenance and Operation Department;
2. Build personnel capacity:
• Continual training of personnel in the Department and Provincial Hydrogeological and Land Reclamation Expedition;
• Drafting and distribution of training materi-als.

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

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

1. Cost of implementation: Moderate

2. Approximate cost of investment per 1 ha:

3. O&M costs: High

4. Expert support: Not needed

1. Cost of implementation: Moderate

2. Approximate cost of investment per 1 ha:

3. O&M costs: High

4. Expert support: Not needed

Reshetkina N.M. et al. “Vertical Drainage”, Moscow: Kolos, 1978. – 319 p.

Reshetkina N.M. et al. “Vertical Drainage”, Moscow: Kolos, 1978. – 319 p.

SIC ICWC

SIC ICWC