a system of farming methods that minimize reliance on expensive inorganic fertilizers, pesticides, and other purchased materials by using these "inputs" as efficiently as possible, or by replacing them with inexpensive organic fertilizers, biological pest controls, and ecological knowledge. Organic farming is one type of low-input agriculture. [fn]Source: (IISD 2005) from IISD website; http://www.iisd.org/sd/glossary.asp (updated: Aug 2005)[/fn]