[en] To screen the plants in Elsaraf dam (Gedaref-Sudan ), for their ability to uptake metal ions and the effect of seasonal rain on the availability of these metal ions for plants , trace elements in plant roots and the associated soil were studied in two seasons using atomic absorption spectroscopy and X-ray fluorescence. The nutrient elements, (Fe, Mn, Zn, Cu, Co) showed higher concentrations than toxic elements (Cr, Ni, Cd) in both plant and soil samples.Iron has the highest concentration 5490/5660 and 3358/3680 mg/100g, manganese has shown the second highest concentration followed by nickel and zinc. Copper, cobalt and chromium have shown relatively similar concentrations, while cadmium has shown the lowest concentration. In general, almost for all elements the soils have shown higher concentration followed by the plant. Estimation of soil/plant transfer factor (CR) that Cyperus rotandus has the highest affinity towards accumulating most of the metal ions, while the rest of plants have shown almost similar affinity.