Open AccessNitrous oxide emissions from clover in the Mediterranean environment
Author(s) -
Iride Volpi,
Simona Bosco,
Nicoletta Nassi o Di Nasso,
Federico Triana,
N. Roncucci,
Patricia Laville,
Simone Neri,
Giorgio Virgili,
E. Bonari
Publication year - 2016
Publication title -
italian journal of agronomy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.509
H-Index - 24
eISSN - 2039-6805
pISSN - 1125-4718
DOI - 10.4081/ija.2016.728
Subject(s) - nitrous oxide , agronomy , environmental science , legume , nitrogen fixation , mediterranean climate , growing season , crop , nitrogen , biology , chemistry , ecology , organic chemistry
Introducing nitrogen N-2-fixing crops into cereal-based crop rotations reduces N-fertiliser use and may mitigate soil emissions of nitrous oxide (N2O). However, the effect of the cultivation of N-2-fixing crops on N2O emissions is still not well understood. N2O from N-2-fixing crops can be emitted in two ways: during biological N-2 fixation itself and when legume residues are returned to the soil. A field trial was carried out on clover (Trifolium squarrosum Savi) to test the role of leguminous crops on N2O emissions in the Mediterranean environment. Monitoring was performed from December 2013 to September 2014. Cumulated N-N2O fluxes were calculated for the growing season (Phase 1) and the post-harvest period (Phase 2) in order to assess the importance of each phase. Our results did not show statistically significant differences between the two phases in term of contribution to the total cumulative N-N2O emissions, in fact Phase 1 and Phase 2 accounted respectively for 43 and 57% of the total