THE NEED FOR A SYSTEMS-APPROACH TO SUSTAINABLE AGRICULTURE

Differences between conventional and sustainable paradigms of agricult ure are much more a matter of differences in farming philosophy than o f farming practices or methods. The conventional model of agriculture is fundamentally an industrial development model which views farms as factories and considers fields, plants, and animals as production unit s. The goal of industrial development is to increase human well-being by increasing production of material goods and services and simultaneo usly increasing aggregate employment and incomes. The underlying assum ption of the industrial model is that a higher quality of life can be derived from increases in income and consumption of goods and services . A fundamental strategy for industrial development has been to specia lize, routinize, and mechanize agricultural production in order to ach ieve the economic efficiencies that are inherent in large-scale indust rial production. New technologies are designed to remove physical and biological constraints to production and, thus, make unlimited progres s possible. Sustainable agriculture, on the other hand, is based on a holistic paradigm or model of development which views production units as organisms that consist of many complex interrelated suborganisms, all of which have distinct physical, biological, and social limits. Pe ople are viewed as part of the organisms or systems from which they de rive their well-being. Quality of life is considered to be a consequen ce of interrelationships among people and between people and the other physical and biological elements of their environment. Fundamental st rategies for sustainable development include diversification, integrat ion, and synthesis. Whole systems have qualities and characteristics t hat are not contained in their individual parts or components. The sam e set of components or parts may be rearranged spatially or sequential ly resulting in a unique system or whole for each new arrangement. Peo ple increase their well-being by using information and knowledge to ma nage or rearrange the components of systems, resources, processes, and technologies in ways that enhance the productivity or 'well-being' of those systems. Human progress is limited only by our ability to enhan ce the social, biological, and physical systems of which we are a part . Sustainable agriculture requires a holistic systems approach to farm resource management. A component approach focusing on individual farm ing practices, methods, and enterprises may have been appropriate for the era of agricultural industrialization. However, a systems approach which focuses on knowledge-based development of whole farms and commu nities will be required to address the environmental, economic, and so cial challenges of the post-industrial era of agricultural sustainabil ity.