Food supply and satisfaction of the human basic needs are objectives of agricultural section. As population increases these needs increases and it is necessary to increase agricultural products. During the last decades it seems that with increasing population the importance of irrigated lands has increased but the issues such as soil salinity, erosion and shortage of water resources have only led to 1% annual growth in irrrigated lands in the world. This growth rate is even negative in many places of dry belt in the earth and the sources of this God given gift is diminishing. Most countries over the world are using their existing surface water resources. Therefore, access to good quality water resources for agricultural purpose has diminished and what has remained is low quality such as salty underground water and water drainage. Due to high amount of salt or sodium in these waters, it would not be possible to access to sustainable agriculture without applying appropriate management methods. Iran is among arid and semiarid places of the world with average precipitation of about 250 mm per year. Almost 15% of the lands in Iran suffer from salinity and high sodium level. The available reports indicate that the ascending trend of this problem. Also the extent of saline and sodium lands in Isfahan province has been estimated above 3000000 acres. Roudasht area in southeast of Isfahan , with an area of about 50000 to 60000 acres is among these lands. In order to study the influence of salinity of irrigation water, water management usage and leaching on yield and characteristics of sugar beet, a study was conducted with collaboration of Isfahan agriculture research center in Roudahst research station. In this research, three treatments of water quality with salinity of 2, 8 and 12 dS/m (Q 1 , Q 2 and Q 3 ) as main factor and two leaching treatments including a treatment without applying leaching (LR 0 ) and treatment with leaching in order to achieve 75% performance (LR 1 ) were used. Also two irrigation management treatments including a treatment with applying water with 2 dS/m salinity from the beginning of cultivation until establishment of plant and then applying water with various qualities until harvesting was applied (GU). Another irrigation management treatment was applying water with various qualities from the beginning to the end of cultivation season (GQ). The experiment was performed as split-split plots based on complete randomized blocks design, using four rep