Sign In Question: What pressure is maintained in drip irrigation method? (RJ Supervisor 2012)
🔑Key Points:
-Drip Irrigation is also called Trickle irrigation; it is the latest field irrigation technique which is meant for adoption at places where there is a huge scarcity of irrigation water and other salt problems.
-In this method, water is slowly applied and directly applied to the root zone of the plant, thereby minimizing the losses by evaporation and percolation.
• Different Methods of Irrigation:
-Free Flooding
-Also called ordinary flooding or wild flooding.
-Used for rolling land (irregular topography) where borders, checks, basins, and furrows are not feasible.
-Water application efficiency is low.
-Suitable for close-growing crops, pastures, and steep land.
-Border Flooding
-Land is divided into strips separated by low levees called borders.
-Each strip is 10–20 meters wide and 100–400 meters long.
-Water flows from the supply ditch into each strip.
-Relationship for maximum area irrigated is:t=2.303yflog10(QQ−fA)
-Check Flooding
-Similar to ordinary flooding but with water controlled by surrounding the area with low, flat levees.
-Suitable for deep homogeneous loam or clay soil with medium infiltration rates.
-Basin Flooding
-A special type of check flooding used for orchard trees.
-Basin shapes can be rectangular, square, circular, or irregular.
-Not suitable for coarse sands.
-Furrow Irrigation
-Water is applied through a series of small, parallel channels called furrows.
-Crops are grown on ridges between furrows.
-Preferred for uniformly flat or gentle slopes (≯ 0.5%).
-Sprinkler Irrigation
-Water is applied in the form of spray, also known as overhead irrigation.
-Best suited for light soils.
-Commonly used for tea, coffee, and vegetables.
-Drip Irrigation
-Also known as trickle irrigation.
-Best suited for row crops and orchards.
-Water is applied directly to the root zone, minimizing losses due to evaporation and percolation.
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