Gross and net rates of nitrogen mineralisation in soil amended with composted olive mill pomace

A - Papers appearing in refereed journals

Gomez-Munoz, B., Hatch, D. J., Bol, R., Dixon, E. R. and Garcia-Ruiz, R. 2011. Gross and net rates of nitrogen mineralisation in soil amended with composted olive mill pomace. Rapid Communications In Mass Spectrometry. 25 (11), pp. 1472-1478.

AuthorsGomez-Munoz, B., Hatch, D. J., Bol, R., Dixon, E. R. and Garcia-Ruiz, R.
Abstract

Olive mill pomace is the major waste product in the olive oil industry and composting these by-products for the purpose of recycling nutrients and organic matter is a sound environmental strategy. Yet little is known about the quantity and timing of nitrogen (N) release from composted olive mill pomace. This paper assesses both gross (using the (15)N dilution technique) and net (aerobic incubation) nitrogen (N) mineralisation and N(2)O emissions of soil amended with seven commercially available composts of olive mill pomace (COMP). All are currently produced in Andalusia and differ in the proportions of raw materials co-composted with the pomace. The absence of significant differences in net N or gross mineralisation and nitrification in COMP-amended soil compared with a control, except for COMP combined with poultry manure, highlighted the recalcitrant nature of the COMP-N. Applications of COMP are hence unlikely to supply available N in available forms, at least in the short-term. Furthermore, N(2)O emissions from COMP-amended soil were negligible and, therefore, applications in the field should not result in increased N loss through denitrification. Copyright (C) 2011 John Wiley & Sons, Ltd.

KeywordsBiochemical Research Methods; Chemistry, Analytical; Spectroscopy
Year of Publication2011
JournalRapid Communications In Mass Spectrometry
Journal citation25 (11), pp. 1472-1478
Digital Object Identifier (DOI)doi:10.1002/rcm.4849
PubMed ID21594919
Open accessPublished as non-open access
FunderBiotechnology and Biological Sciences Research Council
Funder project or codeSEF
North Wyke Research (NWR)
Soil and organic matter processes
Processes and mechanisms of the interactions between grasslands and water
Output statusPublished
Publication dates
Online11 May 2011
Publication process dates
Accepted29 Oct 2010
PublisherWiley
ISSN0951-4198

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