Agricultural soil, a absolutely scarce and not reproducible property, is often the subject of heavy conflicts of use. Due to its progressive use, primarily serving for the production of food, and the increase in competing usage claims, agricultural land becomes increasingly important as a resource and livelihood. Based on the daily reduction of agricultural usable land, food sovereignty and security of supply with domestic food in Austria are not guaranteed any longer to a sufficient degree. The aim of the work is illustration of the main legal instruments for the conservation and management of agricultural useable areas in Austria, which are necessary for the maintenance of food sovereignty and security of supply. Therefore all relevant legal norms at national as well as at EU level were examined and complemented with a practical part in addition to the theoretical explanations. Regarding the protection of agricultural useful areas, it can be distinguished between agricultural policy instruments and instruments of qualitative and quantitative soil protection, respectively. One result is that agricultural- and support policy instruments are not only serving the sustainable management of agricultural useable land, but also food sovereignty and security of supply in the long term. It is shown that the existing tools for spatial planning are not sufficient (effective) to sustainably solve the problem of land consumption. However, there is also no "universal" instrument, which can solve this complex problem. It would rather need the cooperation of several instruments, whereat these need to be more taken into account at a supra-local level, such as agricultural priority areas or supra-local settlement boundaries. In this respect the more targeted use of monetary instruments is also necessary.