Sound policy decisions concerning the complex interrelationships between sustainable agricultural production potential, resource use, technical change, and the environment, require much detailed information on the site-specific nature of resource inputs and alternative land-use practices over...

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...

Availability of water for agricultural use is one of the major factors determining agricultural production in the Western United States and is becoming an important factor in areas of the Southwest. In addition, water use and conservation is an important concern of the 1977 Soil and Water...

The interrelationship between food security of the United States and a diminishing water resource balances on the condition of that water resource, the quantity of other substitute resources, and the level of future technology. The answer to whether food supplies in the United States can be...

A multiperiod regional-national recursive system is formulated to model the interrelationships between agricultural production, resource use, and the environment, in a region nested within a national market. The system consists of three main components: a linear programming model of a region; an...

Wind erosion is defined as the movement of soil particles resulting from strong turbulent winds. The movement of soil particles can be categorized as suspension, saltation, or surface creep. Fine soil particles can be suspended in the atmosphere and carried for great distances. Particles too...

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...

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...