River Farm PPF — Corn and Soybeans

River Farm must split its arable land, operators and harvesting equipment between corn and soybeans. The two crops do not draw on those resources in exactly the same way, so shifting land from one crop to the other creates an opportunity cost. The frontier gives the maximum output combinations under the season's available capacity. The planting plan is a productive choice on the curve. The fallow-acres point is inside the curve because it leaves some land or machine time unused. This chart creates a concrete starting point for discussing why a farm cannot maximize both crops at the same time without adding productive resources.