Irrigation Basics-WRE-B.Tech-Civil Engineering.pptx

This presentation is about the basics of Irrigation. It is a part of curriculum of Water Resource Engineering and it is for Civil Engineering Students.

1. Water Resources Engineering – II (CE 604) Asst. Prof. Ujjwal Saha Department of Civil Engineering IIEST , Shibpur

2. Irrigation What? artificial application of water Where to apply? to the root zone of the crop When to apply? at right time How much to apply? in required quantity What for? for optimum crop yield

3. Why Irrigation is Necessary Inadequate Rainfall Uneven Distribution of Rainfall Development of Farming in Desert area Growing a number of crops in a year Growing Superior Crops

4. Benefit of Irrigation Increase in yield of crops Protection from famine Elimination of mixed cropping Improvement of cash crops General prosperity of the farmers and country Generation of Hydro-electric power Inland navigation Means of communication Water Supply Fishery Afforestation

5. ILL Effects of Irrigation Rising Water Table: Water-logging Problem of water pollution Formation of marshy land: Mosquitoes Dampness in weather Loss of valuable land

6. Systems of Irrigation The classification of Irrigation systems can be done based on the way water is supplied to the land Irrigation systems can be broadly classified into Surface Irrigation and Sub-surface Irrigation Sub-surface Irrigation can be divided into two types: Natural Sub-irrigation Artificial Sub-irrigation

7. Components of a surface irrigation system