Factors Affecting Duty in Irrigation
The Six Factors Affecting Duty in Irrigation are described below.It totally varies with water requirement of crops.
1.Type of crop
Different crop requires different amount of water – duties different.Crop requiring more water will have less flourishing acreage for the same supply of water as compared to that requiring less water.
Duty for a crop requiring more water and vice versa.
2.Climate and season
Factors Affecting Duty in Irrigation includes water lost in evaporation and percolation
Losses vary with season
Duty varies from season to season, and also from time to time in the season.
Some of the rain falling directly over the irrigated land –useful for growth of crop – less irrigation water required to mature the crop.There are different types of rainfall or precipitation.
More useful rainfall less will be the requirement of irrigation water, and more will be duty.
4.Type of soil
The permeability of the soil under irrigated crop is high, water lost due to percolation will be more –hence duty will be less
Sandy soil –duty less
5.Efficiency of cultivation Method
If cultivation method (including tillage & irrigation) is faulty and less efficient in irrigation, resulting in the wastage of water –duty of water will naturally be less
If the irrigation water is used economically, duty of water will improve, as the same quantity of water would be able to irrigate more area
Cultivators should be trained and educated properly to use irrigation water economically
6.Methods and system of irrigation
Perennial irrigation system – soil is continuously kept moist, and hence water required for initial saturation is less.
Inundation irrigation- there is a wasteful use of water, Hence the perennial irrigation system has more duty than the inundation irrigation
Flow irrigation system – lower duty – conveyance losses in the network of canals
Lift irrigation system –higher duty in irrigation.
What is intensity of Irrigation, Gross and Culturable commanded area?