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| Liu, Yuexian; Langer, Vibeke; Høgh-Jensen, Henning; Egelyng, Henrik. |
| The objective of this study was to evaluate the differences in the energy consumption between the production of certified organic pear, green food certified pear, and conventional pear in two areas in China. Data were collected from interviews with farmers during 2007 and 2008. Energy inputs were significantly higher in organic systems compared with conventional and green systems. Fertilizer was the most important contributor to energy consumption in all three farming systems. Three calculation methods for energy value of manure have been found in the literature: substitution method, by-product method, and thermal method. The choise of various calculation methods for estimating the energy value of manure turns out to have great influence on the results in... |
| Tipo: Journal paper |
Palavras-chave: Environmental aspects. |
| Ano: 2010 |
URL: http://orgprints.org/18297/1/18297.pdf |
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