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@ARTICLE{GarciaRuiz:111946,
author = {Garcia-Ruiz, R. and Gomez-Munoz, B. and Hatch, D.J. and
Bol, R. and Baggs, E.M.},
title = {{S}oil mineral {N} retention and {N}2{O} emissions
following combined application of 15{N}-labelled fertiliser
and weed residues},
journal = {Rapid communications in mass spectrometry},
volume = {26},
issn = {0951-4198},
address = {New York, NY},
publisher = {Wiley Interscience},
reportid = {PreJuSER-111946},
pages = {2379 - 2385},
year = {2012},
note = {This research was carried out in the framework of the
'Olive grove project' of the General Secretary for Rural
Development and organic production of the Junta de
Andalucia, and with the economic help of the Minister of
Science and Technology of Spain through the project
referenced CGL200908303.},
abstract = {The combination of plant residues with inorganic
fertiliser-N provides the potential to increase N-use
efficiency in agricultural fruit production systems, such as
olive orchards. The development of weeds in the inter-canopy
area of olive orchards is encouraged as a novel strategy to
reduce soil erosion. However, little is known about soil N
retention or N(2) O production following the combined
application of inorganic-N with the mulched weed
residues.Emissions of (15) N-N(2) O and soil mineral (15) N
retention were measured following combined applications of
(15) N-labelled fertiliser and a range of olive crop weed
residues to a silty loam soil under controlled conditions.
These plant residues differed in their C:N ratios, lignin
and polyphenol contents.The magnitude of soil (15) N-NO(3)
(-) retention from combining plant residues and fertiliser-N
was highly dependent on potential N mineralisation
(r = -0.96) and the (lignin + polyphenol)-to-N ratio
(r = 0.98) of the residues. Fertiliser-N-derived
retention was zero for a legume-based mulch but up to $80\%$
in the treatment containing plant residues with a high
(lignin + polyphenol)-to-N ratio. N(2) O emissions
increased after the addition of residues, and increased
further (up to $128\%)$ following the combined application
of inorganic fertiliser and residues. Fertiliser-derived
(15) N-N(2) O was $<1.4\%$ of the total (14+15) N-N(2) O
emission and $<0.01\%$ of the applied (15) N-NO(3) (-) .
Enhanced N(2) O emissions following the application of
residues and the fertiliser-N values were positively
correlated with the C:N ratio of the residue. Thus,
combining organic- and inorganic-N immobilised a significant
proportion of the inorganic N with little increase in N(2)
O, especially in low C:N ratio residues.The results
demonstrate that whilst there is potential for N(2) O
emissions to be controlled by combining weed residues and
inorganic fertilisers, this is not easy to achieve as the
magnitude and direction of interactions vary between
different species due to their varying substrate qualities.},
keywords = {J (WoSType)},
cin = {IBG-3},
ddc = {530},
cid = {I:(DE-Juel1)IBG-3-20101118},
pnm = {Terrestrische Umwelt},
pid = {G:(DE-Juel1)FUEK407},
shelfmark = {Biochemical Research Methods / Chemistry, Analytical /
Spectroscopy},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:22976203},
UT = {WOS:000308880500002},
doi = {10.1002/rcm.6254},
url = {https://juser.fz-juelich.de/record/111946},
}