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One of the first definitions of sustainable agriculture adopted in the US was published by the American Society of Agronomy [1989, pg. 15]:

"A sustainable agriculture is one that, over the long term, enhances environmental quality and the resource base on which agriculture depends; provides for basic human food and fiber needs; is economically viable; and enhances the quality of life for farmers and society as a whole."

In 1990 the US Congress passed a farm bill that defined the term sustainable agriculture as an integrated system of plant and animal production practices having a site-specific application that over the long term will:

1. Satisfy human food and fiber needs.
2. Enhance environmental quality and the natural resource base upon which the agricultural economy depends.
3. Make the most efficient use of nonrenewable resources and on-farm resources and integrate, where appropriate, natural biological cycles and controls.
4. Sustain the economic viability of farm operations.
5. Enhance the quality of life for farmers and society as a whole.