Although Rio Grande do Sul State is the fourth citrus producer of Brazil, its productivity, less than 50 kg of fruits per plant, is very low. The slow growth of the plants and the presence of nutrient deficiency symptoms mainly Mg, Zn, N and Mn, were the main reason for this study about the nutritional condition of citrus orchards. The objective was to diagnose nutritional disorders and to establish balanced fertilizations that could contribute to yield increase. This study was developed on 35 citrus orchards in Montenegro (10), Sao Sebastiao do Cai (10), Ivoti (9), and Taquari counties (6). In each orchard were choose four plots with three plants each, and collected leaves and soil samples from each tree. It was found, in all counties, that more than 90% of the orchards showed satisfactory levels of P, S, Cu, Fe, and B. In Montenegro, the citrus orchards were prevailing deficient, in decreasing order of N, Mg, K, Zn, and Mn; in Ivoti, of N, Mg, K, Zn, and Mn; in Taquari, of Mg, Zn, Mn, K, and Ca; in Sao Sebastiao do Cai, of Mg, K, and Zn. High levels of potassium in the soil did not provide a satisfactory leaf levels of this element.