Seyed Arman Hosseini Beryekhani - Faculty of Agriculture, University of Birjand, Iran
Zahra Parsa - Faculty of Agriculture, University of Birjand, Iran

Although the use of wastewater has a relatively long history, today more than ever, urban wastewater is considered as a source of irrigation water. In this study, by examining the effects of using treated effluent on the characteristics of cotton plants such as yield and number of bolls per square meter, leaf index and plant height, as well as cotton boll weight and vegetative growth, suggestions have been made that can help farmers to irrigate fields. Informs about the treated effluent. Also, considering the pattern of accumulation of heavy elements in the soil on their effects on soil quality and cultivated crops, the need for this research is even greater. The results of studies have shown that treating municipal effluent as one of the unconventional water sources for irrigation increases the yield of cotton plants. Also, the use of treated effluent in research has increased the number of bolls per square meter, leaf index and plant height in Irrigation treatments with treated effluent show high significance. The purpose of this article is to investigate the use of irrigation with treated effluent on the yield and yield components of cotton plants as well as its effect on the soil of irrigated fields.

Agriculture, Drought, Unusual waters, Heavy elements, Yield