Investigating the influence of Irrigation with industrial Wastewater Combined with Water Deficit Stress on Yield and Yield Components of Barley

To investigate the effect of irrigation with sugar factory wastewater on seed yield and yield components of barley (Hordeum vulgare), a factorial field experiment was performed in a randomized complete block design with three replications in Torbat-Heydarieh in 2013-2014. The experimental treatments included well water (100% water) (I1), sugar factory wastewater (I2), the combination of well water and wastewater (12.5% wastewater and 87.5% water) (I3) at two levels of full irrigation (S1) and applying 100% water stress (S2) and water treatment (I1S1) were selected as control. Results of the studied traits showed that the variation of water stress (S2) at 1% level was significant on seed yield, 1000 seed weight, straw weight, and straw number. The straw weight and straw number in I2S1 treatment with 2545 kg/ha and the number of panicles equal to 82.2 showed the highest amount among other treatments. As well as changes of irrigation water in the level of %1 on the quality of the barely product, such as plant height, grain protein yield, and grain yield had a significant effect. In general, the results of this study showed that the use of sugar factory wastewater, in contracts to water stress, dosen't have a negative effect on grain yield and quality of barely, but also saves costs and consume s chemical fertilizers.