Furrow or flood irrigation is widely used in many parts of the world, including the US, but is the least efficient, losing about 50 percent of water applied. This loss can be reduced by leveling fields, practicing surge flooding and capturing and reusing runoff.Click to see full answer. Accordingly, which irrigation practices are least efficient?Both systems can also be successful as means of fertilization. Furrow (flood) irrigation directs water down crop rows to water plants. This is the least efficient irrigation method for onion production because more water, topsoil, and nutrients are leached and lost in runoff than with drip or sprinkler irrigation.Secondly, what is the most precise and efficient irrigation method? drip irrigation. a form of irrigation that saves water and fertilizer by allowing water to drip slowly to the roots of many different plants, either onto the soil surface or directly onto the root zone, through a network of valves, pipes, tubing, and emitters- most efficient. Thereof, which of the following is the most efficient method of irrigation? Drip irrigation is one of the most efficient types of irrigation systems. The efficiency of applied and lost water as well as meeting the crop water need ranges from 80 to 90%.What is the most efficient form of irrigation quizlet?Drip or trickle irrigation – most efficient method consisting of small plastic pipes with tiny holes releasing water at slow steady rates.