Biologico contro e convenzionale a confronto

Organic vs. conventional AG

http://www.globalagriculture.org/report-topics/industrial-agriculture-and-small-scale-farming.html
http://www.fao.org/agroecology/overview/en/
http://www.worldwatch.org/node/4060
serenoregis.org/wp-content/uploads/2012/06/nature11069.pdf
http://www.fao.org/search/en/?cx=018170620143701104933%3Aqq82jsfba7w&q=organic+yeld&cof=FORID%3A9&siteurl=www.fao.org%2Fstatistics%2Fen%2F&ref=www.google.it%2F&ss=2471j747737j12
http://www.fao.org/organicag/oa-faq/oa-faq7/en/
https://www.google.it/search?q=conversion+to+organic+agriculture+and+yeld&ie=utf-8&oe=utf-8&client=firefox-b&gfe_rd=cr&ei=3AxEWO7fNY7A8gfSwJ24AQ

http://ec.europa.eu/eurostat/statistics-explained/index.php/Organic_farming_statistics