Methods of Irrigation Video Lecture | Irrigation Engineering - Civil Engineering (CE)

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1. What are the different methods of irrigation in civil engineering?
Ans. In civil engineering, the different methods of irrigation include surface irrigation, sprinkler irrigation, drip irrigation, sub-irrigation, and center pivot irrigation. Surface irrigation involves the flooding of fields with water, sprinkler irrigation uses overhead sprinklers to distribute water, drip irrigation provides water directly to the roots of plants, sub-irrigation involves supplying water below the ground surface, and center pivot irrigation rotates around a central pivot point to water crops in a circular pattern.
2. What are the advantages of surface irrigation?
Ans. Surface irrigation has several advantages, including low cost and simplicity of operation. It requires minimal equipment and can be easily implemented in various topographic conditions. It also allows for the uniform distribution of water over large areas and helps in the natural replenishment of groundwater. Additionally, it promotes the infiltration of water into the soil, which can improve soil fertility.
3. How does sprinkler irrigation work?
Ans. Sprinkler irrigation works by distributing water through sprinkler heads that spray water over the crops or fields. The sprinklers are connected to a network of pipes that are pressurized to ensure a uniform distribution of water. This method allows for precise control of water application, reduces water loss due to evaporation, and can be used on various soil types and slopes. It is commonly used in areas with limited water resources or where the climate is not suitable for surface irrigation.
4. What are the benefits of drip irrigation?
Ans. Drip irrigation offers several benefits, including water conservation, improved plant health, and reduced weed growth. It delivers water directly to the roots of plants, minimizing evaporation and runoff. This efficient water delivery system ensures that plants receive the required amount of water, which can result in higher crop yields. Drip irrigation also helps in reducing weed growth as water is only provided to the targeted plants, minimizing weed competition.
5. How does center pivot irrigation work?
Ans. Center pivot irrigation involves a long pipe structure that rotates around a central pivot point. The pipe is supported by towers and carries sprinkler heads that distribute water in a circular pattern. As the pipe rotates, it irrigates a large area of land. This method is suitable for flat or gently sloping terrains and is commonly used for large-scale agricultural irrigation. It allows for efficient water distribution, reduces labor requirements, and enables the irrigation of crops in a systematic manner.
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