By Carl F. Jordan
Modern business agriculture isn't sustainable as a result of its heavy reliance on petroleum, a non-renewable resource of the strength utilized in farming, and due to pollutants brought on by petroleum items resembling fertilizers and insecticides. A platforms research of farming means that agriculture may be extra sustainable while providers of nature, similar to nutrient recycling by way of soil micro-organisms and common controls of bugs, exchange the prone now supplied by means of power from petroleum. Examples are drawn from the Southeastern united states, yet classes realized will be utilized around the world.
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Extra info for An Ecosystem Approach to Sustainable Agriculture: Energy Use Efficiency in the American South
Their deep roots hold the soil in place and prevent erosion. Grazing systems can be stable if they are established in areas where grazing animals naturally occur, and if care is taken to prevent overgrazing. S. were once the home of huge herds of grazing bison. They were constantly on the move, looking for new and fresh grass, so overgrazing did not occur. Cattle can be grazed sustainably on natural savannas if they are prevented from overgrazing. New systems of herd management that continually rotate cattle among paddocks in a pasture are helping to overcome the problem of overgrazing that occurs when cattle are continuously grazed in a single pasture (Dartt et al.
Man’s survival in a changing World. Washington, DC: IBP Office, Division of Biology and Agriculture, National Academy of Science – National Research council. National Research Council: Committee on the Role of Alternative Farming Methods in Modern Production Agriculture. (1989). Alternative agriculture. Washington, DC: National Academy Press. Odum, E. P. (1989). Ecology and our endangered life support systems. Sunderland: Sinauer Associates. Odum, H. , & Pinkerton, R. C. (1955). Time’s speed regulator: The optimum efficiency for maximum power output in physical and biological systems.
2009). Recent efforts at many locations have been directed at using woody biomass as feedstock for fuels (BREC 2012), since 20 1 A Systems (Holistic) Approach to Sustainable Agriculture Fig. 3 Theoretical energy use efficiency in a natural ecosystem. There is no fossil fuel subsidy to aid production, so it is a highly efficient system with regard to the need for energy subsidies forests often grow on lands not suitable for agriculture. However, trees have evolved defense mechanisms against decomposition, and thus they are more difficult to convert to fuel than corn and sugar cane.
An Ecosystem Approach to Sustainable Agriculture: Energy Use Efficiency in the American South by Carl F. Jordan