A model for evaluating alternative sediment control policies in agriculture is formulated such that changes in the production of agricultural commodities among and within 105 agricultural production areas can be analyzed. The model combines the elements of spatial economic equilibrium with...

Many people have tried to analyze what the future holds for continued increases in crop yields. After studying time series of average U.S. yields for 19 crops, Lin and Seaver [6] concluded that 12 crops including corn, cotton, and wheat have reached yield plateau, and the seven remaining crops...

During the last decade, two concerns have been raised about the future of U.S. crop production. These concerns are: A) Will the United States have enough land available in the future that is suitable for crop production? and b) What will future crop yields be? Future U.S. crop production is...

The purpose of this study is to develop an econometric simulation model for analyzing the use of funds in Corn Belt agriculture. The Corn Belt Region, one of the major regions in U.S. agriculture, constitutes states such as Iowa, Illinois, Indiana, Missouri, and Ohio. A set of behavioral...

A national interregional linear programming model of U.S. agriculture is used to evaluate and compare two conventional and three organic production alternatives. The objective is to estimate the effects on production, supply prices, land use, farm income, and export potential, of a complete...

People concerned with planning and analysis of the agricultural sector are faced with two general problems which in turn gives rise for two general types of models. One problem involves positive or predictive models which attempt to predict the "real world" as it actually exists based on...