These early indigenous practices were ecologically sound, and farming communities were
largely self-sufficient [8][11]. Early societies practiced a ‘pure’ form of organic farming, as
there were no fabricated chemicals available for agricultural inputs. Vandana Shiva [7]
employs the term “internal input farming systems” to describe these self-sufficient farming
units which utilize these so called waste products as valuable inputs (see Figure 1.). In this
diagram, Vandana Shiva utilizes an ecological model to demonstrate a holistic and organic
form of farming which continually circulates key nutrients.