RT Journal Article
T1 Nitrous oxide and methane emissions from a vetch cropping season are changed by long-term tillage practices in a Mediterranean agroecosystem
A1 Téllez-Río, Ángela
A1 García-Marco, Sonia
A1 Navas Vásquez, Mariela José
A1 López-Solanilla, Emilia
A1 Rees, Robert
A1 Tenorio, José Luis
A1 Vallejo, Antonio
AB Lower greenhouse gas (GHG) emissions from legume-based cropping systems have encouraged their use to deliver mitigation in agricultural systems. Considerable uncertainties remain about the interaction of legumes with long-term tillage systems on GHG emissions under rainfed agroecosystems. In this context, a field experiment was undertaken under a rainfed vetch crop to evaluate the effect of three long-term tillage systems (i.e. no tillage (NT), minimum tillage (MT) and conventional tillage (CT)) on nitrous oxide (N2O) and methane (CH4) emissions for 1 year. Different N2O flux patterns were observed among tillage systems during the growth period of vetch, which depended on the soil conditions favouring nitrification and denitrification. The NT system maintained a higher sink for N2O than MT and CT from January to mid-April, which significantly reduced N2O emissions at this stage. In this period, denitrification capacity and nirK gene numbers were higher for MT than NT and CT. Additionally, an increase in soil NO3  content and more favourable denitrification conditions in MT and NT than in CT for the last crop period increased N2O emissions in conservation tillage systems. Total annual N2O losses were significantly higher in MT (124.2 g N2O–N ha−1) than NT (51.1 g N2O–N ha−1) and CT (54 g N2O–N ha−1) in a vetch crop. Low net uptake of CH4 was observed for all tillage systems. These results suggested that long-term NT may be a better option than MT to mitigate GHG emissions in rainfed legume-cereal rotation.
SN 0178-2762
YR 2014
FD 2014-08-30
LK https://hdl.handle.net/20.500.14352/96668
UL https://hdl.handle.net/20.500.14352/96668
LA eng
NO Tellez-Rio, A., García-Marco, S., Navas, M., López-Solanilla, E., Rees, RM., Tenorio, JL., Vallejo, A. 2015. Nitrous oxide and methane emissions from a vetch cropping season are changed by long-term 3 tillage practices in a mediterranean agroecosystem. Biology and Fertility of Soils 51: 77-88
NO Ministerio de Ciencia e Innovación(España)
NO Comunidad de Madrid
DS Docta Complutense
RD 6 abr 2025