Modern industrial agriculture is not sustainable because of its
heavy reliance on petroleum, a non-renewable source of the energy
used in farming, and because of pollution caused by petroleum
products such as fertilizers and pesticides. A systems analysis of
farming suggests that agriculture will be more sustainable when
services of nature, such as nutrient recycling by soil
micro-organisms and natural controls of insects, replace the
services now provided by energy from petroleum. Examples are drawn
from the Southeastern USA, but lessons learned can be applied
worldwide.
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