Notes on Food Supply

o    So far, food supply has kept pace with human population growth, however t is doubted that if this trend will continue.
o    As we adapt an increasing amount of global NPPP to human needs, use and degrade more land, eat more meat, contaminate more waters, we are getting closer, our planet’s K…we just don’t know what that is yet.
o    There are 1.1 billion people living in poverty---they are increasing and growing hungrier.
o    Annual grain yields per hectare slowed their rate of increase since the Green Revolution.
o    Types of farming systems:
•    Subsistence: provision of food for the farmers and their community with little or no surplus.
•    Commercial: large profit generating scale; yields are maximized; often are monocultures; with high levels of technology, energy, and chemical inputs.