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To make students familiar with the crop consumptive use, Irrigation requirement of crops and irrigation methodologies implemented in farm.
Students would be familiar to find out crop consumptive use and water requirement of crops.
They also be able to design the irrigation channel and would be knowing about irrigation losses and measures to mitigate those loses
Module 1
Major and medium irrigation schemes of India, purpose of irrigation, environmental impact of irrigation projects, source of irrigation water, present status of development and utilization of different water resources of the country;
measurement of irrigation water: weir, flumes and orifices and other methods;
Practice
Module 2
open channel water conveyance system : design and lining of irrigation field channels, on farm structures for water conveyance, control & distribution;
underground pipe conveyance system: components and design;
Practice
Module 3
depth of irrigation, frequency of irrigation, irrigation efficiencies;
surface methods of water application: border, check basin and furrow irrigation- adaptability, specification and design considerations.
Practice
Module 4
soil water plant relationship: soil properties influencing irrigation
management, soil water movement, infiltration, soil water potential, soil moisture characteristics, soil moisture constants, measurement of soil moisture, moisture stress and plant response;
water requirement of crops: concept of evapotranspiration (ET), measurement and estimation of ET, water and irrigation requirement of crops
Practice
Major and medium irrigation schemes of India, purpose of irrigation, environmental impact of irrigation projects, source of irrigation water, present status of development and utilization of different water resources of the country
Volume methods of Irrigation measurement: Area-Velocity Method, Float method, Current meter, Tracer method
PPT: Lecture-02
Practice (1 hr)
Rigid and Mobile Boundary channel
Regimes of flow
Practice (2 hr)
Design of Economical Channel Section
Practice (3.5 hr)
Lacey's Theorem: Application
Design Procedure
And Drawback of Lacey's Theorem
Underground Water Conveyance System
Air Vents, End Plugs, Riser Valves
Sample Calculations
Types of Losses
Computation of Losses in Water Conveyance Channels
Measure to reduce losses
Practice (2 hr)
Irrigation Scheduling
Physiological growth stages, soil moisture range
Irrigation interval
Practice (2 hr)
Types of soil water
Field Capacity, Wilting Point, Available Soil Moisture
Yield response of plants to soil water
Flow of water through soils
Lecture-12_Part 2
Lysimeters
Working mechanism of lysimeters
Water Balance Method
Estimation of Evapotranspiration
Crop Coefficient
Practice (2 hr)
Hydrology, Crop Modeling