The Effect of the urban waste water Tabriz Bonab and Maragheh on soil properties and the quality of three onions, tomatoes and alfalfa

In order to determine the elements and heavy metals in water and areas in various plants, the experiment was conducted during the years of 2014 and 2015 in form of factorial based on randomized complete block design. The first factor was included two levels of water (pit water and sewage water) and the second factor was involved three regions (Tabriz, Maragheh, and Bonab) and the third factor was included three crops (onions, tomatoes and alfalfa). 36 treatments were studied over two years in three replications. The results showed that there are significant differences among studied waters in terms of element amount. But the interaction of year and no significant difference waters but no significant difference was observed between interaction of year and waters. The results among the studied plants in terms of element amount demonstrated that there are significant differences among plants in terms of elements amount and also significant differences were observed for interaction of year and plant in majority of the studied traits. By studying the three regions in terms of elements amount; it was observed that there are significant differences among the regions. Significant difference was observed in majority of the studied traits for interaction of year and region. The results of mean comparisons with Duncan method indicated that sewage water had the highest amount of elements and onion had the greatest amount of elements and Bonab was the most polluted region. The correlation results showed that there was significant negative correlation between yield and heavy metals.