Effect of magnetized water on hydraulic properties of tape irrigation system and yield and water use efficiency in maize

In this research, effect of irrigation water crossing from fixed magnetized field on tape nozzle clogging and hydraulic properties of tape irrigation system as well as yield and water use efficiency in maize cv. Maxima were studied. The research was done from June to October in Research Farm of Zanjan University based on the complete randomized blocks in three replications with two treatments, irrigation water crossing and no crossing from field magnetic. Magnetic field was created by wire-tube method with an intensity of 0.1 Tesla. At the end of the growing season, drip irrigation system was evaluated. In addition, yield and yield components of maize were measured. Based on the results, at no magnetic irrigation system, mean of qa, Eu, Uc and Du decreased as 18%, 3%, 2% and 3% (respectively) and Cv increased 3% compared with magnetic irrigation system (significant differences). Calcite deposits in tape nozzles and their clogging caused it. Using magnetized water for maize watering increased total wet weight, total dry weight and leaf area (as 11%, 10% and 13%, respectively) comparing no magnetized watered crops and the differences were statically significant. As same water used for both magnetic and no magnetic treatments (5193 cubic meter per hectare), increasing of maize total wet weight in magnetic water caused significant increasing in water use efficiency as 1.7 kg/m3 (11%).