NDLI: The influence of management and environmental variables on soil N$_{2}$O emissions in a crop system in Southern Italy

Content Provider	Springer Nature Link
Author	Ranucci, Silvia Bertolini, Teresa Vitale, Luca Tommasi, Paul Ottaia, Lucia Oliva, Marco Amato, Umberto Fierro, Angelo Magliulo, Vincenzo
Copyright Year	2010
Abstract	Soil N$_{2}$O emissions were monitored throughout a 3-year crop rotation including maize, fennel and a ryegrass-clover sward, at Borgo Cioffi NitroEurope site. N$_{2}$O emission rates were highly variable in time and space and controlled by soil nitrogen and soil water content. The N$_{2}$O effluxes were low for most of the monitored period. The highest N$_{2}$O emissions were recorded throughout the 2007 maize cropping season, ranged form 15.2 to 196.2 μg m$^{−2}$ h$^{−1}$ whereas the lowest ones ranged form −5 to 10 μg m$^{−2}$ h$^{−1}$ during the 2007–2008 ryegrass-clover winter crop. For the maize crops, N$_{2}$O peaks were detected after fertilization but with a delay of some weeks from applications, probably due to the presence of DMPP nitrification inhibitor in the applied fertilizer. A properly designed ANOVA model was developed to explain the influence of the main chemical-physical factors. This model also allowed the quantification of the delay time in peak emissions following fertilization, which resulted variable over the years and ranged between 2 and 21 days. A dependence of emissions from soil temperature and moisture was found, with significant interactions in some instances. Calculated Emission Factors (maize 2007: 0.48%; ryegrass-clover sward 2007–2008: 0.05%; maize 2008: 0.14%; fennel: 0.28% 2008–2009; maize 2009: 0.015%) resulted well below the values reported in the literature and the 1% reference value indicated by IPCC, probably due to a sub-optimal water regime inducing low Water Filled Pore Space (WFPS) values.
Starting Page	83
Ending Page	96
Page Count	14
File Format	PDF
ISSN	0032079X
Journal	Plant and Soil
Volume Number	343
Issue Number	1-2
e-ISSN	15735036
Language	English
Publisher	Springer Netherlands
Publisher Date	2010-12-03
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Nitrous oxide Emission factor Empirical model Mediterranean climate Soil Science & Conservation Plant Sciences Ecology Plant Physiology
Content Type	Text
Resource Type	Article
Subject	Soil Science Plant Science

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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