This study develops a model based on the yield potential of various soil types in 12 Iowa counties to estimate the potential value of switching from uniform to variable fertilizer rates. Results indicate modest increases in the gross returns over fertilizer costs, ranging from $7.43 to $1.52 per...

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Presents a study which looked at farmers' choice of conservation, tillage, rotation and soil testing practices in the Nebraska corn area. Estimation of various combinations of the practices impact on fertilizer use, corn yield, and soil erosion; Details on a polychotomous-choice selectivity...

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A framework is developed for examining price and welfare effects of the introduction of genetically modified(GM)products. In the short run, non-GM grain generally becomes another identity-preserved product. However, more profound market effects are observed under some reasonable...

The US pork industry routinely adds antibiotics to rations of weaned pigs both to prevent illness before symptoms emerge and to increase growth rates. The EU is in the process of restricting feed use of antibiotics, and the U.S. is currently reviewing the practice. The strategic issue facing US...