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dc.contributor.authorYagüe Carrasco, María Rosaes_ES
dc.contributor.authorQuílez y Sáez de Viteri, Doloreses_ES
dc.identifier.citationQuílez, D., and María R. Yagüe. “On-farm Measurement of Electrical Conductivity for the Estimation of Ammonium Nitrogen Concentration in Pig Slurry.” Journal of Environmental Quality (2012): vol. 41 núm 3, pp. 893-900
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 the risk of pollution. In this work, two rapid and suitable for field use methods for determining PS ammonium N (NH(4)+-N) concentration (Quantofix and conductimetry) are evaluated. The electrical conductivity of a dilution 1 PS:9 distilled water had better results than Quantofix, did not need reagents, and gave a direct value of NH(4)+-N concentrations (range, 1.0-7.6 kg NH(4)+-N m(-3)). The conductimetry method allows the use of alternative waters with EC <1.9 dS m(-1) for dilution. This method is being introduced to farmers in northeast Spain to improve PS management and has been well received due to its low cost and ease of use.en
dc.subject.othersuelos y riegoses_ES
dc.titleOn-farm measurement of electrical conductivity for the estimation of ammonium nitrogen concentration in pig slurryen
dc.description.versionPeer Reviewed
dc.subject.agrovocInstrumentos de mediciónes
dc.bibliographicCitation.titleJournal Of Environmental Qualityen
Appears in Collections:[DOCIART] Artículos científicos, técnicos y divulgativos

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