Effect of N dose on soil GHG emissions from a drip-fertigated olive (OleaeuropaeaL.) orchard
Data de publicació2019-04-22
Rufat i Lamarca, Josep
MetadadesMostra el registre d'unitat complet
Agronomic practices may mitigate greenhouse gas emissions (GHG) from crops. Appropriate nitrogen (N) and irrigation management provide the potential to reduce nitrous oxide (N2O) and methane (CH4) emissions. However, there is little information about the combination of both practices on the GHG emissions
from olive orchards. This four-year study was conducted to qualitatively compare the effect of N doses applied through two drip irrigation strategies on N2O and CH4 emissions in a super-intensive (1010 trees ha−1) olive orchard. The design (randomised blocks) was asymmetric: 0,50 and 100 kg N ha−1yr−1 were tested with full irrigation (FI; 2013 to 2016), but only 0 and 50 kg N ha−1yr−1 were tested with regulated deficit irrigation (RDI; 2014 to 2016). The study shows that the soil acted as a main sink of N2O and CH4, regardless of the soil water content. Methane oxidation increased with N dose in the FI strategy (significant in 2013 and 2015). Overall, there was a tendency of yield to increase with the N dose without increasing emissions and without depending of the irrigation strategy. However, these results were not significant. Further confirmation of this tendency is necessary; particularly comparing FI + N100 (most promising treatment in terms of profitability) with the RDI + N100 (not available in this study) water-saving strategy.
És part deScience of the total environment, 2019, vol. 677, p. 350-361
Mostrant elements relacionats per títol, autor i matèria.
Poch, Rosa M.; Pascual Roca, Miquel; Villar Mir, Josep Ma.; Rufat i Lamarca, Josep (Sociedad Geológica Mexicana, 2019)In order to assess the irrigation efficiency under water-limiting conditions, four different treatments of subsurface irrigation of peach trees in a semi-arid Mediterranean climate near Lleida (NE Iberian Peninsula) were ...
Use of organic mulch to enhance water-use efficiency and peach production under limiting soil conditions in a three-year-old orchard Lordan Sanahuja, Joan; Pascual Roca, Miquel; Villar Mir, Josep Ma.; Fonseca Salcedo, Francisco; Papió, Josep; Montilla, Victor; Rufat i Lamarca, Josep (Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria, 2015)Mulching techniques have emerged in recent years to overcome soil constraints and improve fruit tree productivity. The object of this study was to evaluate the effects of a low-cost organic mulch application in a newly ...
Belguerri, Hemza; Villar Mir, Josep Ma.; Pascual Roca, Miquel; Fatmi, A.; Amadeu, A.; Rufat i Lamarca, Josep (El Oued University, 2016)The nitrogen (N) balance was estimated in a very high density olive orchard in north- east of Spain, in order to calculate the inputs and outputs of N related to tree response and soil nitrogen availability. The calculate ...