TY  - BOOK
AU  - Walker, W.R.
TI  - Guidelines for designing and evaluating surface irrigation systems / W.R.Walker
SN  - 9251028796
PY  - 1989///
CY  - Rome: FAO.
KW  - Surface irrigation
N1  - 1. The practice of irrigation. 1.1 The perspective and objectives of irrigation. 1.2 Irrigation methods and their selection. 1.3 Advantages and disadvantages of surface irrigation. 2. Surface irrigation systems. 2.1 Introduction to surface irrigation. 2.2 Surface irrigation methods. 2.3 Requirements for optimal performance 2.4 Surface irrigation structures. 3. Field measurements 3.1 Field topography and configuration. 3.2 Determining water requirements 3.3 Infiltration. 3.4 Flow measurements. 3.5 Field evaluation. 4. Evaluation of field data. 4.1 Objectives of evaluation. 4.2 Performance measures. 4.3 Intermediate analysis of field data. 4.4 Systems evaluation. 4.5 General alternatives for Improvement 4.6 An example furrow irrigation evaluation 5. Surface irrigation design. 5.1 Objectives and scope of design 5.2 The basic design process. 5.3 Computation of advances and intake opportunity time. 5.4 Furrow irrigation flow rates cutoff times and field layouts. 5.5 Border irrigation design. 5.6 Basin irrigation design. 5.7 Summary. 6. Land levelling 6.1 The importance of land preparations 6.2 Small-scale land levelling 6.3 Traditional engineering approach. 6.4 Laser land levelling 7. Future developments 7.1 Background. 7.2 Surge flow. 7.3 Cablegation 7.4 Adaptive controls systems 7.5 Water supply management
ER  -