Abstract
Introduction A soil data base for sustainable land use was published by Varallyay (1992). According to the soil survey (Szabolcs, 1971; Szabolcs and Varallyay, 1978; Varallyay et al., 1979, 1980, 1992) the salt affected soil cover in Hungary is about 1 million ha. Salt affected soils (SAS) with structural B-horizon (meadow solonetz soils) represent the most wide spread group of SAS in Hungary. Most of them are located in the Trans Tisza Region. The practice of reclamation of SAS is more than two centuries old. In spite of this long history the revaluation of the research and the practical results is important from the viewpoint of sustainability because of the changing economical and ecological situation. Sustainable agriculture integrates three main goals:--environmental health, economic profitability, social and economic equity. For meeting the demands of ecological and economical points of sustainability of amelioration among others the following questions must be answered: What is the main tendency of natural soil forming processes? What is the degree of the soil quality changes for shorter and longer term after amelioration? What are the most suitable cultivated crops on improved SAS?
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