10 Questions
What is the primary purpose of the physical system in surface irrigation?
To supply water for crop production
Which factor largely influences the advance rate of water in surface irrigation?
The geometry or shape of the flow cross-section
What is the cumulative time since the initiation of irrigation until the inflow is terminated known as?
Cut off time (tco)
Which phase of the surface irrigation process involves the practice of using a high unit discharge during the advance phase and a reduced one during the wetting or ponding phase to control runoff?
Advance Phase
What does 'surface irrigation' refer to?
Methods in which water is distributed over the field by overland flow
Which phase of the surface irrigation process involves the cumulative time since the initiation of irrigation until the inflow is terminated?
Depletion (Vertical Recession) Phase
What is the term for the practice of using a high unit discharge during the advance phase and a reduced one during the wetting or ponding phase to control runoff in surface irrigation?
Cutback irrigation
What is the primary purpose of the physical system in surface irrigation?
To supply water to an area for crop production
What largely influences the advance rate of water in surface irrigation?
Field slope
What does 'surface irrigation' refer to?
The term refers to a broad class of irrigation methods in which water is distributed over the field by overland flow
Study Notes
Surface Irrigation Process
- The primary purpose of the physical system in surface irrigation is to distribute water over the land to achieve a desired moisture distribution.
Factors Influencing Advance Rate
- The advance rate of water in surface irrigation is largely influenced by the factor of infiltration.
Key Terms and Phases
- Basin Irrigation: The cumulative time since the initiation of irrigation until the inflow is terminated is known as basin irrigation.
- Cutback: The practice of using a high unit discharge during the advance phase and a reduced one during the wetting or ponding phase to control runoff is known as cutback.
Definition of Surface Irrigation
- Surface irrigation refers to the application of water to the soil surface, where it flows over the land and infiltrates into the soil.
Test your knowledge of surface irrigation methods with this quiz. Learn about the oldest and widely used method of water application to agricultural land, including the distribution of water over the field by overland flow and the factors affecting water front advance.
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