Bunds or ridges are constructed around the areas forming basin within which irrigation water may be controlled. I check basin method.
Basin irrigation is the most common form of surface irrigation particularly in regions with layouts of small fields.
Check basin irrigation images. Chapter 7 discusses under which circumstances to choose basin irrigation. Image irrigation 5. If a field is level in all directions is encompassed by a dyke to prevent runoff and provides an undirected flow of water onto the field it is herein called a basin.
Irrigation cost is higher as it involves much labour. Check basins 1 rectangular 2 ring it is the most common surface irrigation method here the field is divided into smaller unit areas bunds or ridges are constructed the water applied to a desired depth can be retained until it infiltrates into the soil the size of the basin varies from 10 m2 to 25 m2 depending upon soil type topography stream size and crop. I will show you all the details about them in the blog.
Check basin irrigation basin construction 2 marking a contour line 26. Basin irrigation is suitable for many field crops. Check basin irrigation irrigating basins 1 direct method 28.
Steep slopes require complex layouts and heavy land levelling. Check basin irrigation basin construction 1 setting out of the markers 25. Paddy rice grows best when its roots are submerged in water and so basin irrigation is the best method to use for this crop figure 7.
It is by far the most common form of irrigation throughout the world and has been practiced in many areas virtually unchanged for thousands of years. In controlled flooding water is spread or flooded on a rather. Check basin irrigation basin construction 3 making the bunds by wooden frame smoothing the land 27.
Surface irrigation is where water is applied and distributed over the soil surface by gravity. Check basin irrigation is suited for smooth gentle and uniform land slopes and for soils having moderate to low infiltration rates. Stilling basin to check force of flowing excess water and to measure flow going out el centro calif 171.
The field is divided into smaller unit areas or beds measuring 10 to 100 sq metre or even more. Figure 7 basin irrigation. Stilling basin to check force of flowing excess water and.
Both row crops and close growing crops are adopted to be used with basins as long as the crop is not affected by temporary inundation or is planted in raised beds so that it will remain above the water. Surface irrigation is often referred to as flood irrigation implying that the water distribution is uncontrolled and therefore inherently inefficient. More time is required for irrigation.
Basins are connected through a dhora a small drain type flow way which has raised earthen walls on both sides. In this method the whole field is divided into basins according to the capacity of water. Free flooding basin flooding flooding by contour laterals zigzag method of flooding border strip flooding and check flooding are the 6 types of controlled flooding which is a subcategory of surface irrigation.
Border or check basin irrigation.