Tesis presentada para optar al Grado de Magíster en Manejo de Suelos y Aguas / On a global scale, natural biogeochemical cycles are being overwhelmed. Fertilizer and atmospheric deposition dominate total anthropogenic nitrogen (N) inputs to the temperate regions as a whole, with fertilizer accounting for roughly two-thirds of the total (Howarth et al., 1996). On agricultural land, crop and livestock production systems are the largest cause of the global N alteration (Bouwman et al., 2011), with most of the N applied in annual production systems being lost (Robertson and Vitousek, 2009). Moreover, N availability to plants is difficult to predict, since organic matter turnover processes and losses influence the availability (Sørensen, 2001).
| Identifer | oai:union.ndltd.org:UCHILE/oai:repositorio.uchile.cl:2250/151479 |
| Date | January 2013 |
| Creators | Nájera de Ferrari, Francisco |
| Contributors | Salazar Guerrero, Osvaldo, Casanova Pinto, Manuel, Tapia Fernandez, Yasna |
| Publisher | Universidad de Chile |
| Source Sets | Universidad de Chile |
| Language | English |
| Detected Language | English |
| Type | Tesis |
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