This paper presents a unified planning model which incorporates both regional and farm managerial goals under uncertainty. We illustrate that the model, which adopts the probability maximization criterion, can be appropriately formulated as a nonlinear stochastic multiobjective programming model. Its deterministic equivalent problem gives us useful characteristics of the solution. We propose the algorithm based on the ε-constraint method, which is consistent with the characteristics of the model, to implement the planning. Finally, an illustrative example follows.