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dc.contributor.authorYagüe Carrasco, María Rosa-
dc.contributor.authorQuílez Sáez de Viteri, Dolores-
dc.date.accessioned2012-05-10T12:08:33Z-
dc.date.available2012-05-10T12:08:33Z-
dc.date.issued2012-
dc.identifier.citationYagüe MR, Quílez D. On-farm measurement of electrical conductivity for the estimation of ammonium nitrogen concentration in pig slurry. Journal of Environmental Quality 41 (3): 893-900 (2012)es_ES
dc.identifier.issn0047-2425-
dc.identifier.urihttp://hdl.handle.net/10261/49526-
dc.description33 Pags., 6 Figs, 5 Tabls. The definitive version is available at: https://www.crops.org/publications/jeqes_ES
dc.description.abstractPig (Sus scrofa domesticus) slurry (PS) is commonly applied as fertilizer to agricultural fields. Knowledge of PS nitrogen content is essential for good management, but PS nitrogen content is highly variable not only between farms but also within a farm. Laboratory analysis of animal slurries is often expensive and impractical for routine farmer use. Therefore, when slurry is spread on land its fertilizer value is generally unknown resulting in risk of pollution. In this work, two rapid and suitable for field use, methods for determining PS ammonium-N (NH4 +-N) concentration (Quantofix® and conductimetry) are evaluated. The electrical conductivity of a dilution 1 PS: 9 distilled water (EC1:9) had better results than Quantofix®, did not need reagents and in addition, gave a direct value of NH4 +-N concentrations (range 1.0 - 7.6 kg NH4 +-N m-3). The conductimetry method allows the use of alternative waters with EC < 1.9 dS m-1 for dilution. The method is being introduced to farmers in northeast Spain in order to improve PS management and has been well received due to its low cost and ease of use in practical application.es_ES
dc.description.sponsorshipThis study was funded by the National Institute for Agriculture and Food Research and Technology of Spain - INIA (projects SC00-061 and RTA-2010-00126) and with FEDER (European Fund for Regional Development) and FEADER (European Agricultural Fund for Rural Development) funds.es_ES
dc.language.isoenges_ES
dc.rightsopenAccesses_ES
dc.subjectAmmonium-Nes_ES
dc.subjectdilution-wateres_ES
dc.subjectelectrical-conductivityes_ES
dc.subjectrapid methodes_ES
dc.subjectpig-slurryes_ES
dc.titleOn-farm measurement of electrical conductivity for the estimation of ammonium nitrogen concentration in pig slurryes_ES
dc.typeartículoes_ES
dc.identifier.doi10.2134/jeq2011.0352-
dc.description.peerreviewedPeer reviewedes_ES
dc.relation.publisherversionhttp://dx.doi.org/10.2134/jeq2011.0352es_ES
dc.identifier.e-issn1537-2537-
dc.embargo.terms2013-09-30es_ES
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