A retail demand model measured the impact of the Food and Drug Administration's 2006 announcement warning consumers about E. coli O157: H7 contamination in spinach. Model results indicated that bulk lettuces were shock substitutes (in contrast to price substitutes) as consumers purchased...

This paper examines whether there has been cross-country convergence among yields for selected crops important to Russia and the New Independent States. The only crop that showed yield convergence globally was wheat, although several crops in sub-samples displayed convergence. In the reform era,...

This paper briefly presents the results of a total factor productivity (TFP) study of South African commercial agriculture, for 1947-1997, and illustrates some potential pitfalls in rate of return to research (ROR) calculations. The lag between R&D and TFP is analyzed and found to be only 9...

Price and income elasticities for imports of US and Brazilian soyabeans by each of the eight major workd soyabean importers and the rest of the world were weighted by their shares of the respective soyabean markets and summed to approximate total price and income elasticities for US and...

An approach is offered that lets data determine the exact location of seasonal cycles. Rather than use deterministic variables that define the season, it allows seasonal cycles to be identified and modelled as dictated by the data in demand modelling framework.