In order to identify the most probable and timely development options, the economic and social forecasts become pertinent remedies for determining the development objectives either of the branch or of the society. Therefore, the forecasts become decisive factor in the activities of scientific formulation and argumentation of the strategy and tactics of economic and social growth, and the efficiency of economical international affairs management. The analysis of the foreign trade of the Republic of Moldova showed that the biggest share in the national exports is agrarian and agro-food products. That's why the present article perform a depth study in analyzing and determining the potential of agrarian sector development using modeling and forecasting techniques based on time series adjustment, regression and correlation functions to predict trend and development potential of the agriculture sector.