Practical Aspects of Irrigation Water Management

Contents: 1. Determination of bulk density by field method. 2. Determination of soil moisture by gravimetric method. 3. Determination soil moisture by tensiometer. 4. Determination of soil moisture content by electrical resistance block. 5. Determination of soil moisture content by neutron moisture meter. 6. Measurement of soil water potential by pressure plate and membrane apparatus. 7. Preparation of soil moisture characteristic curves a. 8. Determination of field capacity. 9. Determination of walting point. 10. Measurement of irrigation water through parshall flumes. 11. Measurement of irrigation water through weirs. 12. Calculation of irrigation water requirement. 13. Determination of infiltration characteristics of soils. 14. Demonstration of furrow method of irrigation. 15. Demonstration of check basin method of irrigation. 16. Demonstration of ring basin method of irrigation. 17. Visit to farmer's field and cost estimation of drip irrigation system. 18. Emonstration of operation of drip irrigation system inclusing filter cleaning, flushing of laterals and fertilizer injection. 19. Measurement of emitter discharge rate, wetted diameter and calculation of emitter discharge variability. 20. Erection and operation of sprinkler irrigation systems. 21. Calculation of irrigation efficiencies. 22. Determination of irrigation water quality parameters i.e. EC, pH, carbonates, bicarbonates, Ca, Mg. 23. Determination of saturated and unsaturated hydraulic conductivity. 24. Demonstruction of moisture extraction pattern of crops. 25. Calculation of consumptive use, water requirement of a given cropping for optimum/variable productivity. 26. Crop planning at the farm and project level. 27. References.