The science or practice of farming, including growing crops and raising animals for the production of food, fiber, fuel and other products. [NALT]

Agriculture or farming is the cultivation and breeding of animals, plants and fungi for food, fiber, biofuel, medicinal plants and other products used to sustain and enhance human life. [AGROVOC]

The farming system is defined as a decision-making unit comprising the farm household, cropping systems, and livestock systems, which transforms land, external inputs (seed, pesticides, nutrients, etc.), and labor (including knowledge) into useful products that can be consumed or sold. [NALT]

Farms with less than $250,000 gross receipts annually, on which day-to-day labor and management are provided by the farmer and/or the farm family that owns the production or owns, or leases, the productive assets. [NALT]