[1] García de Souza, M., Alliaume, F., Mancassola, V. and Dogliotti, S. (2011) Carbono Orgánico y Propiedades Físicas del Suelo en Predios Hortícolas del Sur de Uruguay. Agrociencia Uruguay, 15, 70-81.
[2] Passeggi, M., López, I. and Borzacconi, L. (2005) Assessment of the Energy Production from Biogas in Uruguay. II Congreso de Ingeniería Química del Mercosur y IV Congreso del MERCOSUR de Ingeniería de Procesos, Brazil.
[3] López, I., Passeggi, M., Boix, C., Barcia, R., Borzacconi, L. and Lieberman, L. (2006) Generación de Lodos y Evolución de la Biomasa de un Reactor UASB a Escala Real Tratando Efluentes de Maltería. XXX Congreso Interamericano de la Asociación de Ingeniería Sanitaria (AIDIS), Uruguay.
[4] Arthuson, V. (2009) Closing the Global Energy and Nutrient Cycles through Application of Biogas Residue to Agricultural Land—Potential Benefits and Drawbacks. Energies, 2, 226-242. http://dx.doi.org/10.3390/en20200226
[5] Silva, A., Ponce de León, J., Cavassa, R. and Reyes, W. (1992) Efecto de la Aplicación de Efluentes Orgánicos de Tambo sobre la Producción de Verdeos y Propiedades Físico-Químicas del Suelo. Notas Técnicas No 16, Facultad de Agronomía, Montevideo.
[6] La Manna, A., Mieres, J., Acosta, Y. and Torres, I. (2004) Utilización de Efluentes en Tambos. Resumen de Investigación. Actividades de difusión No 361, Resultados Experimentales en Lechería, INIA, Uruguay, 35-44.
[7] Barbazán, M., del Pino, A., Moltini, C., Hernández, J. and Rodríguez, J. (2011) Caracterización de Materiales Orgánicos Aplicados en Sistemas Agrícolas Intensivos de Uruguay. Agrociencia Uruguay, 15, 82-92.
[8] Mulvaney, R.L. (1996) Nitrogen Inorganic Forms. In: Sparks, D.L., et al., Eds., Methods of Soil Analysis. Part 3. Chemical Methods, ASA and SSSA, Madison, 1123-1184.
[9] Rhine, E.D., Sims, G.H., Mulvaney, R.L. and Pratt, E.J. (1998) Improving the Berthelot Reaction for Determining Ammonium in Soil Extracts and Water. Soil Science Society of America Journal, 62, 473-480.
http://dx.doi.org/10.2136/sssaj1998.03615995006200020026x
[10] Bray, R.H. and Kurtz, L.T. (1945) Determinations of Total, Organic and Available Forms of Phosphorus in Soils. Soil Science, 59, 39-45. http://dx.doi.org/10.1097/00010694-194501000-00006
[11] Isaac, R.A. and Kerber, J.D. (1971) Atomic Absorption and Flame Photometry: Techniques and Uses in Soil, Plant and Water Analysis. In: Walsh, L.M., Ed., Instrumental Methods for Analysis of Soil and Plant Tissues, SSSA, Madison, 17-37.
[12] Murphy, J. and Riley, J.P. (1962) A Modified Single Solution Method for the Determination of Phosphate in Natural Waters. Analytica Chimica Acta, 27, 31-36. http://dx.doi.org/10.1016/S0003-2670(00)88444-5
[13] Nelson, D.W. and Sommers, L.E. (1996) Total Carbon, Organic Carbon, and Organic Matter. In: Sparks, D.L., et al., Eds., Methods of Soil Analysis. Part 3. Chemical Methods, ASA and SSSA, Madison, 961-1010.
[14] Matsunaka, T., Sawamoto, T., Ishimura, H., Takakura, K. and Takekawa, A. (2006) Efficient Use of Digested Cattle Slurry from Biogas Plant with Respect to Nitrogen Recycling in Grassland. International Congress Series, 1293, 242-252. http://dx.doi.org/10.1016/j.ics.2006.03.016
[15] Nicholson, F.A., Chambers, B.J., Williams, J.R. and Unwin, R.J. (1999) Heavy Metal Contents of Livestock Feeds and Animal Manures in England and Wales. Bioresource Technology, 70, 23-31.
http://dx.doi.org/10.1016/S0960-8524(99)00017-6
[16] del Pino, A., Casanova, O., Barbazán, M., Mancassola, V., Arló, L., Rodríguez, J., Borzacconi, L. and Passeggi, M. (2012) Caracterización y Evaluación de Biosólidos Producidos por Digestión Anaerobia de Residuos Agroindustriales. CI Suelo, 30, 129-136.
[17] Terhoedven-Urselmans, T., Scheller, E., Raubuch, M., Ludwig, B. and Georg Joergensen, R. (2009) CO2 Evolution and N Mineralization after Biogas Slurry Application in the Field and its Yield Effects on Spring Barley. Applied Soil Ecology, 42, 297-302. http://dx.doi.org/10.1016/j.apsoil.2009.05.012
[18] Stumpe, B., Werner, S., Jung, R., Heinze, S., Jüschke, E., Strippel, C. and Marshner, B. (2012) Organic Carbon Dynamics and Enzyme Activities in Agricultural Soils Amended with Biogas Slurry Liquid Manure and Sewage Sludge. Agricultural Science, 3, 104-113.
[19] Kuzyakov, Y., Friedel, J.K. and Stahr, K. (2000) Review of Mechanisms and Quantification of Priming Effects. Soil Biology & Biochemistry, 32, 1485-1498. http://dx.doi.org/10.1016/j.apsoil.2009.05.012
[20] Garg, R.N., Pathak, H., Das, D.K. and Tomar, R.K. (2005) Use of Flyash and Biogas Slurry for Improving Wheat Yields and Physical Properties of Soil. Environmental Monitoring and Assessment, 107, 1-9.
http://dx.doi.org/10.1007/s10661-005-2021-x
[21] Raghothama, K.G. (1999) Phosphate Acquisition. Annual Review of Plant Physiology and Plant Molecular Biology, 50, 665-693. http://dx.doi.org/10.1007/s11104-004-2005-6
[22] Ternouth, J.H. (1990) Phosphorus and Beef Production in Northern Australia. 3. Phosphorus in Cattle—A Review. Tropical Grasslands, 24, 159-169.
[23] Arienzo, M., Christen, E.W., Quayle, W. and Kumar, A. (2009) A Review of the Fate of Potassium in the Soil-Plant System after Land Application of Wastewaters. Journal of Hazardous Materials, 164, 415-422.
[24] Hemingway, R.G. and Parkins, J.J. (2001) Fertiliser Usage and the Mineral Requirements of Grazing Livestock. Proceedings 466, International Fertiliser Society, York, 1-36.
[25] Fangueiro, D., Chadwick, D., Dixon, L. and Bol, R. (2007) Quantification of Priming and CO2 Emission Sources Following the Application of Different Slurry Particle Size Fractions to Grassland Soil. Soil Biology & Biochemistry, 39, 2608-2620. http://dx.doi.org/10.1016/j.soilbio.2007.05.012
[26] Grigatti, M., Di Girolamo, G., Chincarini, R., Ciavatta, C. and Barbanti, L. (2011) Potential Nitrogen Mineralization, Plant Utilization Efficiency and Soil CO2 Emissions Following the Addition of Anaerobic Digested Slurries. Biomass and Bioenergy, 35, 4619-4629. http://dx.doi.org/10.1016/j.biombioe.2011.09.007
[27] Smith, J.L. and Doran, J.W. (1996) Measurement and Use of pH and Electrical Conductivity for Soil Quality Analysis. In: Doran, J.W. and Jones A.J. Eds., Methods for Assessing Soil Quality, SSSA Special Publication No 49, Madison, 169-185.