Effect of different levels of magnetized wastewater on yield and water use efficiency in maize and some of soil physical properties

In this research, impact of different levels of magnetized wastewater were investigated on yield and water use efficiency in maize cv. Maxima and some of soil physical properties. Research was done as factorial experiment with two factors based on complete randomized blocks with 3 replications from June to October 2014 in Research Farm of Zanjan University. Required wastewater was provided from refinery of Zanjan and was distributed in plots in 5 levels included 0% (well water as control), 25, 50, 75 and 100%. Magnetic water was included crossing and no crossing magnetic field. Based on results, leaf area and relative water content of leaf were not significant affect by different levels of wastewater. Maximum value of maize wet mass and water use efficiency for wet mass were in 100% wastewater treatment which were significantly difference with control treatment as 23.9 tone/ha and 7.6 kg/m3 respectively. Difference between maize wet mass and water use efficiency of wet mass for magnetized and no magnetized water were 14.6 tone/ha and 4.7 kg/m3 (respectively) which were statistically significant.
In this study, effect of different levels of wastewater were not significant on soil physical properties in 0-15 and 15-30 cm depths. The effect of magnetic water on soil physical properties was significant in 0-15 cm of soil depth but there was not significant influence in 15-30 cm depth. Results showed, in 0-15 cm of soil depth, magnetic water increased soil bulk density, volume moisture and soil saturate degree and decreased soil porosity compared to no magnetic water as 19%, 3%, 10% and 8% (respectively).