ERS provides economic information on the near-term agricultural outlook and on longrun projections. Here is an overview of efforts to improve such information through comprehensive quantitative models. The various models incorporate intercommodity relationships within agriculture, aggregate farm...

The prototype model developed in this paper is a deterministic simulation system, used to develop alternative commodity purchase plans and to show their differential impacts in terms of costs, tradeoffs, and benefits. The mod!!1 incorporates systems of demand parameters to account for economic...