In situ determination of nitrogen movement in agricultural soils with pig slurry application in the mediterranean zone of Chile
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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).
Tesis presentada para optar al Grado de Magíster en Manejo de Suelos y Aguas