Small farmers hold the key to seed diversity: researchers

By Chris Arsenault Tue Feb 17, 2015 ROME (Thomson Reuters Foundation) – Up to 75 percent of the seeds needed to produce the world’s diverse food crops are held by small farmers, researchers said following a review of international census data. Growers with farms of less than seven acres preserve diversity through “networks of seed and knowledge exchanges”, Karl Zimmerer, a Penn State University geography professor who led the research, told a conference of the American Association for the Advancement of Science on Friday.