The material contained herein is supplementary to the article named in the title and published in the American Journal of Agricultural Economics, Volume 89, Number 5, December 2007.

Increasing demand for the production of energy from renewable sources has fueled a search for alternatives to supplement those currently in production. One such alternative is switchgrass, a perennial grass native to North America that appears to have considerable potential as a biomass...

The public provision of information about the environmental performance of firms and products has generated considerable enthusiasm and become a common instrument of environmental regulation, even though the economic analysis of the social welfare properties of these policies is quite limited....

Important economic thinkers such as Sen, Arrow and Harsanyi have argued for the existence of multiple preference orderings, allowing individuals to make choices, both when only private welfare is at stake and when the good of some collective is involved. Further, recent literature has shown that...