UNIT 2:
Evapo transpiration - ET – plot
Study of Evapotranspiration measuring device
Crop water requirement - duty and delta -Effective rainfall
Scheduling - Irrigation requirement - Irrigation frequency, Irrigation efficiencies
Problems on duty of water - Duty and delta relationship
UNIT 3:
UNIT 4:
Infiltration and its equations, soil moisture constants
Soil water plant relationship, soil water movement
Soil water plant relationship, soil water movement
Determine the efficiency of centrifugal and submersible pump
UNIT 5:
Agricultural drainage – Drainage coefficient; principles of flow through soils
Darcy’s law – infiltration theory, Surface drainage systems
Design of sub surface drainage system
Mole drains, drainage wells, Leaching requirements - irrigation and drainage water quality
Mole drains, drainage wells, Leaching requirements - irrigation and drainage water quality
Recycling of drainage water for irrigation – Fertigation
Design of sub surface drainage system
Case studies on drainage in Assam and West Bengal, Visit to Dams & Irrigation Canal.
Design of surface drainage system
