Functions and existence of agricultural corporate farms have concerned agricultural economists for a long time. It is worth examining in a given market how these forms of companies evolve, work, what effects they have on supply chain, land market or natural environment, etc. Importance of the topic is also underpinned by western experts arguing that a totally different pattern of agricultural structure developed in former socialist states (superlarge farms) than in West-Europe (family farms). The aim of this paper is to present how superlarge companies affect their environment in the Hungarian cereal market, which is one of the leading sectors of the national agriculture. Moreover, growing cereals are suitable for large scale companies, especially in Hungary, where 84% of the total agricultural land was arable land in 2005.