In general way, the rise of the number of agriculturists seated for the agrarian reform and the creation of the Pronaf (National Program of Reinforcement of Familiar Agriculture) reflect and instrumentalizam the innumerable ones debates in the society. Already the analysis of familiar agriculture in Brazil is a decurrent special task of the available data on this socioeconmica category. The last Farming Census is one of the few instruments of quantitative analysis of the farming sector in Brazil, and this does not allow the separation between familiar and patronal agriculture in the basic form as the data are disponibilizados by the IBGE, ahead of the restrictions ece of fishes for the social stratification, that the condition of the producer considers only, the group of economic activity and the groups of total area of the farming establishments. Also the debate is intense on the concepts and the relative importance of ' ' agriculture familiar' ' ahead of the innumerable conceptions, interpretations and proposals, deriving of the different representative entities of ' ' small agricultores' ' , of the intellectuals who study governmental the agricultural area and of the technician in charge elaborating the politics for the Brazilian agricultural sector. In this perspective, valley to stand out the studies carried through in the scope of the Project of Cooperation Technique INCRA/FAO in the end of years 1990, that they better allow to understanding of the logic and dynamics of the familiar units and the seated ones, as well as of the systems of production for adopted them in the diverse regions of the country. , From the results of these studies it is only possible to indicate that Brazilian agriculture presents a great diversity in relation to its environment, to the situation of the producers, the aptitude of lands, to the infrastructure availability etc., interregional and intra-regional. This confirms the extreme necessity to deepen the knowledge of the agrarian realities in the territories of planning and localities of citizenship, beyond disclosing the necessities to incorporate in effective and agile way the processes of planning of the public politics for the agricultural way. . .