Iron deficiency is one of the most common plant nutritional problems in calcareous soils worldwide. Iron is the 4 th most abundant element in soils but due to a very low solubility specially in arid and semi-arid soils, the plant available Fe is much less than the plants need. Iron deficiency induces chlorosis in young leaves of plants. Different methods are being applied to manage the plant iron deficiency among which, application of synthetic Fe chelates is very common, however, the high cost makes these compounds not affordable for the farmers. Therefore, it is necessary to find more effective and cheaper alternatives. In previous studies, the effects of steel slag application as an iron fertilizer were investigated. In the present work the effects of using agricultural slag on some soil properties and plant element uptakes were studied. The compound has an alkaline pH and contains about 49.50% of lime, 7.8 percent iron, 2.23% zinc and 3.3% of magnesium. This study was conducted in two stages as incubation and greenhouse experiments. Corn single cross 704 is used as the test plant. The results of incubation experiment showed that the slag application increased soil pH slightly and increased AB-DTPA-extractable iron, manganese and zinc. Lead and Ni in the soil were also increased slightly as compared to the control. But the extractable Cu reduced in soil due to the application of slag. The results of pot experiment showed that application of slag + 1% organic matter increased the shoot and root dry weight of corn. The highest iron uptake of shoots was observed in slag + 1% organic matter, while different levels of slag and slag + 1% organic matter increased the root Fe uptake. It seems that although, the slag and slag + organic matter treatments increased the root iron uptake, but the transfer of Fe from root to shoot was not increased effectively. The application of slag increased Zn but decreased Cu and Mn uptake. While the effect on lead and nickel uptake was different. The results of this work may propose the agricultural slag as a possible iron fertilizer in avable lands.