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NITROGEN RUNOFF AND LEACHING LOSSES IN BEEF PRODUCTION SYSTEMS UNDER TWO DIFFERENT STOCKING RATES IN SOUTHERN CHILE

dc.creatorAlfaro,Marta
dc.creatorSalaza,Francisco
dc.creatorIraira,Sergio
dc.creatorTeuber,Nolberto
dc.creatorRamírez,Luis
dc.date2005-01-01
dc.date.accessioned2020-06-09T15:24:09Z
dc.date.available2020-06-09T15:24:09Z
dc.identifierhttps://scielo.conicyt.cl/scielo.php?script=sci_arttext&pid=S0717-66432005000200008
dc.identifier.urihttps://bibliotecadigital.infor.cl/handle/20.500.12220/29484
dc.descriptionThe Lakes Region of Chile produces 60% of the country's milk and 45% of its meat. Production is expected to increase in the near future, yet there are few data on the environmental impact of local livestock systems. A field experiment was carried out during 2004 to measure nitrogen (N) runoff and leaching losses in beef cattle-grazing production systems near Osorno. Grazing was carried out with Holstein-Friesian steers of 220 kg of initial live weight, with stocking rates of 3.5 and 5 steers ha-1. Water samples were collected during 6.5 months with surface lysimeters and ceramic cups, and were analyzed for nitrate and ammonium. Total losses were calculated as the product of N concentration and accumulated drainage at each sampling date. A significant difference in the total N loss was found between the two treatments (11.1 and 29.9 kg N ha-1, respectively; P < 0.05). The main pathway of N loss was leaching, which contributed 99% of the total N loss. Nitrate was the main form of N loss in runoff (71%) and leaching (99%). Average nitrate concentration in leaching samples was always below the European Community Directive limit. However, nitrate concentration in runoff samples had maximum values of 116 ± 13.8 and 82 ± 22.4 mg L-1 for the 3.5 and 5 steers ha-1 treatments, respectively. For the experimental conditions tested, N losses from beef cattle production systems were low. This was related to the low N inputs in fertilizers used and to the physical and chemical properties of the volcanic soils
dc.formattext/html
dc.languageen
dc.publisherFacultad de Ciencias Naturales y Oceanográficas, Universidad de Concepción
dc.relation10.4067/S0717-66432005000200008
dc.rightsinfo:eu-repo/semantics/openAccess
dc.sourceGayana. Botánica v.62 n.2 2005
dc.subjectAndisol
dc.subjectammonium
dc.subjectnitrate
dc.subjectlivestock production
dc.titleNITROGEN RUNOFF AND LEACHING LOSSES IN BEEF PRODUCTION SYSTEMS UNDER TWO DIFFERENT STOCKING RATES IN SOUTHERN CHILE
dc.typeArtículo de revista


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