I have been under the impression that the world's current population cannot be fed without the use of chemical fertilizers. Admittedly this is based on an article I read in Scientific American decades ago and a more recent radio interview with some old gent to whom much of the "green revolution" (the fist one) was attributed.
Nevertheless Dr Ivette Perfecto of U Michigan http://www.snre.umich.edu/contact/faculty-detail.php?people_id=20 is quoted in the press as stating otherwise, based on a modeling study. http://www.planetark.com/avantgo/dailynewsstory.cfm?newsid=43040 http://gristmill.grist.org/story/2007/7/11/192726/134 Presumably, this refers to Badgley, C., J. Moghtader, E. Quintero, E. Zakem, J. M. Chappell, K. Aviles-Vázquez, A. Samulon, and I. Perfecto. In press. Organic agriculture and the global food supply. Renewable Resources and Food Systems (in press) Is this a realistic result? Do I need to reconsider my understanding of this matter? A Grist reader points to a similar study out of Iowa State http://www.leopold.iastate.edu/pubs/nwl/2007/2007-2-leoletter/ltar.htm but that just talks about profit margins, not calories. mt --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups Global Change ("globalchange") newsgroup. Global Change is a public, moderated venue for discussion of science, technology, economics and policy dimensions of global environmental change. Posts will be admitted to the list if and only if any moderator finds the submission to be constructive and/or interesting, on topic, and not gratuitously rude. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/globalchange -~----------~----~----~----~------~----~------~--~---
