Agriculture is widely used in India almost largest livelihood depends on it and their contribution has a significant figure in GDP. Agriculture practice in India is unknown strength of Indians, here millions of people are involved in agriculture that is largest private enterprise and India is the world largest producer of tea, spices, pulses, milk, and jute. And the second-largest producer of wheat, sugarcane, rice, vegetables, fruits, oilseeds, and cotton. Currently, India is the world, fourthlargest producer of agrochemicals. Green Revolution reforms have been taken to increase for expansion of farming areas, double-cropping system, using seeds with improved genetics. Green Revolutions make a substantial change in Agriculture practice by using high yielding variety (HYV) seeds, tractors, irrigation facilities, pesticides, and fertilizers. Conventionally, surface irrigation is most popular and widely used in India but nowadays drip irrigation is very popular to save water and nutrient by supplying it more effectively to the root of crops. Design modification of dripper reduces half of the expenses of conventional drip irrigations which make drip irrigation more affordable and efficient for farmers in the world.

Keywords : Drip Irrigation, Drip Emitter, Irrigation Water Productivity, Evapotranspiration, Pressure – Compensating.