During the winter months, when the farm was down, I did a lot of reading and research on anything related to agriculture and food production.
What really stood out to me where the reports by ETC Group (Action Group on Erosion, Technology and Concentration), formally known as RAFI (Rural Advancement Foundation International). Their reports are detailed, broad in scope and jam packed with reference.
If you have time and want to understand the real significance of agricultural diversity and small scale farming, read ETCs mind blowing publication "Who will feed us ?" (2009) and the more exhaustive, slightly outdated (1997) but still right on "Human Nature - Agricultural Biodiversity and Farm-Based Food Security"
To grasp the impact of industrial agriculture on ecosystems and societies around the world, read GRAINs brief report "From green to gene revolution."(2010)
If you want to know whats coming, be sure to check out these ETC reports on emerging technologies and phenomena:
"Extreme Genetic Engineering" (2007), on synthetic biology,
"Who Owns Nature?" (2009), on corporate concentration in the life industry,
"The New Biomassters" (2010), on the global grab on plants, lands, ecosystems, and traditional culture,
"Retooling the Planet" (2009), a critical overview of geoengineering technologies, and
"The Big Downturn" (2010), on nanotechnology.