Schedule
Theory
- Water – The base for life. Functions described, Water resources in India and the region
- Present day water requirement for man and for Agriculture and Horticulture. Rainfall variability – Increasing demand with unchanging supply.
- Role of water in plant growth – Optimum, excess and short fall in water availability, Soil – water relations – Available and unavailable water concept.
- Soil type, depth and its water holding capacity. Rooting characteristics and moisture extraction patterns.
- Water requirement of crops. Lysimetry in assessing water requirement. Annual, biennial and perennial crops .PET and AET applications in water and irrigation requirements.
- Climatological approach for estimating water requirement. Use of pan evaporimeter, pan factor, crop factor. Factor for different growth stages.
- Critical stages of crop growth – water stress sensitivity stages. methods to overcome
- Scheduling of irrigation different approaches in scheduling. Scheduling for different crops and methods of irrigation.
- Mid semester examination
- Climatological approach. atmospheric demand-factors in ET-The concept of IW/CPE ratio in scheduling irrigation
- Methods of irrigation – Surface and Sub- surface methods suitability to crops –minimizing conveyance losses.
- Pressurised methods. Sprinkler method and suitability for crop, soil, topography and climate Merits and De-merits
- Drip irrigation –Suitability for crop, soil, topography and climate.
- Concept of fertigation -fertilizers and instruments time of application -Advantages
- WUE - Factors affecting-Methods to improve economic use of water for irrigation Water use for maximum profit of the garden /orchard ecosystem
- Water and irrigation management for different crop and soils. Water management for problem soils.
- Layout of irrigation systems. Comparison of cost.
Practical
- Measurement of irrigation water, volumetric,’V’notch, parshal flume,water meters.
- Use of commonly used formulae in irrigation practices and working out problems
- Observations and practicing land shaping
- Study of land leveling implements
- Layout for surface method and sub surface method of irrigation
- Study of layout for sprinkler method
- Layout for drip method
- Estimation of soil moisture by different methods
- Estimation of soil moisture constants and water holding capacity for different soils.
- Estimation of water and irrigation requirement for horticultural crops
- Scheduling of irrigation – preparation of schedule by different approaches for annuals, perennials under different methods of irrigation and climate -soil type
- Working out irrigation frequency based on soil type and climatic requirement
- Practicing the use of instruments in irrigation practices
- Irrigation planning and scheduling for the water resources available.
- Working out area irrigable with available source of water.
- Soil moisture conservation practices for increasing WUE
- Practical Examination
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Last modified: Thursday, 5 January 2012, 9:56 PM