Investigating of the Effect of irrigation management with magnetized urban wastewater on Rice Growth indexes

For the cultivation of high-yielding rice crops, the use of irrigation systems and low-quality water are ways to reduce water use and overcome the crisis of dehydration. To improve the quality of water, there are different methods such as using magnetic fields. The purpose of this study was to investigate the magnetization effect of wastewater treatment plant in agricultural campus of Gorgan University of Agricultural Sciences and Natural Resources in a factorial randomized complete block design with three replications on some rice growth indices in 2018. Experimental treatments include irrigation (underground (S) and surface irrigation (B)), type of irrigation water (ordinary water (C) and Gorgan urban wastewater treatment plant (W)) and magnetization (M) and non-magnetization water treatment method. (O)). The treatment composition was surface irrigation with conventional non-magnetic water treatment. During the experiment, plant height, 1000-grain weight, biological yield, harvest index and water use efficiency were measured. Results showed that application of non-magnetic wastewater increased plant height, 1000-grain weight, biological yield, harvest index and water use efficiency. The results showed that using non-magnetic surface treatment (OWB) and combination non-magnetic wastewater (OWS) increased plant height, 1000-grain weight, biological yield, harvest index and water use efficiency. The combination of (OWB) in plant height was at the same treatment level and increased in other traits compared to treatment, however, the composition (OWS) of harvest index increased with %26.7 and water use efficiency with 0.47 kgr/ha compared to other treatments and especially control. Underground irrigation method in addition to reducing water use compared to surface irrigation, improved harvest index and water use efficiency. According to the results of this study, irrigation of rice does not need to create a water layer on the soil surface and in order to increase production and increase water use efficiency while preserving the quantitative and qualitative characteristics of the plant, the use of abnormal water must be such that the environmental and health risks are minimized?