The United States is the world's largest phosphate exporter and the world's largest potash importer. The U.s. nitrogen trade balance, relatively stable before 1983, has shifted as the United States became a net importer of nitrogen beginning in 1983. This bulletin includes statistics for 1970-91...

Proper stationarity assumptions (trend stationarity or difference stationarity)are important for modeling agricultural supply response in the context of time series analysis Test reults show that the assumption of trend stationarity should be a tested rather than a maintained hypothesis We...

Many analysts have claimed the record number of crop acres taken out of production in 1983 as a result of the Payment-in-Kind (PIK) program affected the already dechnmg sales offarm tractors The authors use intervention analysis, a particular form of a transfer function, to model and test for...

The rapid growth in fertilizer consumption throughout the sixties and seventies peaked at 23.7 million nutrient tons in 19R1. U.S. plant nutrient use has since dropped by varying amounts because of fewer crop acres and stabilizing application rates. By 19R,), plant nutrient use totaled 21.7...

In this paper we seek to reconcile low farm-level substitution elasticity between nitrogen, fertilizer, and land, with larger industry-level values for the corn sector. This is accomplished with a micro-simulation model which identifies twenty-three heterogeneous groups of corn farmers based on...

In this paper we present an applied welfare analysis in the tradition of Harberger that confronts the notable exceptions to the appropriate use of a single market measure for general equilibrium welfare analysis. We bring together the results of several elaborative studies on Harberger's 1971...

Regression and time-series analysis are integrated to develop a short-run price forecasting model for the retail prices of major nitrogen fertilizer materials. Time-series analysis is conducted to generate future values of the wholesale price of anhydrous ammonia, the source of nearly all...