Nitrogen release characteristics from biosolids-derived organomineral fertilizers

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dc.contributor.authorAntille, Diogenes Luis
dc.contributor.authorSakrabani, Ruben
dc.contributor.authorGodwin, Richard J.
dc.date.accessioned2016-03-11T14:04:45Z
dc.date.available2016-03-11T14:04:45Z
dc.date.issued2014-04-25
dc.description.abstractThis study investigated the availability of nitrogen (N) following soil application of a novel biosolids-derived organomineral fertilizer (OMF15—15:4:4) in comparison with urea (46% N). OMF15 is produced by coating biosolids granules (particle size range: 1.10–5.50 mm in diameter) with urea and potash [60% potassium oxide (K2O)], which increase the concentration of mineral N and potassium (K), respectively, resulting in a balanced fertilizer material suitable for application in cereal and grass crops. The study comprised two soil types of contrasting characteristics which were incubated over a period of 90 days at 25 °C and maintained near field capacity. Nitrogen was applied at rates equivalent to 0 (control), 150, and 300 kg ha−1, and soil mineral N measured routinely using standard laboratory techniques. Results showed that the majority of N was released from OMF15 within 30 days from application (range: 40% to 72% of total OMF15-N applied) with a further 10% to 28% in the following 60–90 days. OMF15 required an accumulated thermal time of 2250 degrees-day to release between 68% and 79% of the total OMF15-N applied. From this, it was inferred that mineralization of the organic-N fraction in OMF15 is likely to progress beyond harvest of winter cereal crops in-field conditions in England. The results of this study aided the development of fertilization strategies for the best use of OMF in winter cereal and grass crops.en_UK
dc.identifier.citationAntille DL, Sakrabani R, Godwin RJ. (2014) Nitrogen release characteristics from biosolids-derived organomineral fertilizers. Communications in Soil Science and Plant Analysis, Volume 45, Issue 12, 2014, pp.1687-1698en_UK
dc.identifier.issn0010-3624
dc.identifier.urihttp://dx.doi.org/10.1080/00103624.2014.907915
dc.identifier.urihttp://dspace.lib.cranfield.ac.uk/handle/1826/9783
dc.language.isoenen_UK
dc.publisherTaylor and Francisen_UK
dc.rightsAttribution 3.0 Unported
dc.rights.urihttps://creativecommons.org/licenses/by/3.0/
dc.subjectBiosolids granulesen_UK
dc.subjectnitrogen availabilityen_UK
dc.subjectorganomineral fertilizers (OMF)en_UK
dc.subjectsoil N dynamicsen_UK
dc.subjectwinter cereal and grass cropsen_UK
dc.titleNitrogen release characteristics from biosolids-derived organomineral fertilizersen_UK
dc.typeArticleen_UK

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