Cover crop effects on nitrous oxide emission from a manure-treated Mollisol

Jarecki, Marek K.; Parkin, Timothy B.; Chan, Alvarus S. K.; Kaspar, T. C.; Singer, Jeremy W.; Kerr, B. J.; Hatfield, Jerry L.; Jones, Raymond

doi:10.1016/j.agee.2009.05.008

Cited by 80 publications

(40 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…1). Due to the high mineral N availability in soils in and directly adjacent to the bands, N immobilization in cover crop residue was likely insufficient to decrease N 2 O emissions by decreasing NO 3 availability ( Jarecki et al, 2009). At the same time, given the favorable conditions for denitrification in these soils following N application, C substrate provided by cover crop residue likely stimulated denitrification and N 2 O emissions at N135, the N rate closest to the economic optimum.…”

Section: Cover Crop Effects On Nitrous Oxide Emissionsmentioning

confidence: 99%

“…By decreasing the soil NO 3 pool, these cover crops can also decrease soil N 2 O emissions (Baggs et al, 2000). However, the effects of cover crops on N 2 O emissions have been mixed ; some studies have found cover crops to increase (Petersen et al, 2011) or have no consistent effect on N 2 O emissions ( Jarecki et al, 2009;Smith et al, 2011). When cover crops are killed shortly before N application, mineralizable C from their residue may stimulate denitrification and N 2 O emissions (Sarkodie-Addo et al, 2003;Petersen et al, 2011).…”

mentioning

confidence: 99%

See 1 more Smart Citation

Cover Crop Effects on Nitrous Oxide Emissions: Role of Mineralizable Carbon

Mitchell

Castellano

Sawyer

et al. 2013

Soil Sci. Soc. Am. j.

120

View full text Add to dashboard Cite

Section: Cover Crop Effects On Nitrous Oxide Emissionsmentioning

confidence: 99%

mentioning

confidence: 99%

Cover Crop Effects on Nitrous Oxide Emissions: Role of Mineralizable Carbon

Mitchell

Castellano

Sawyer

et al. 2013

Soil Sci. Soc. Am. j.

120

View full text Add to dashboard Cite

“…DAYCENT, Parton et al, 2001;DNDC, Li et al, 1992;ecosys, Grant and Pattey, 2003). Most existing process-based models require additional work to improve simulating rewetting and thawing effect on soil gas fluxes (Jarecki et al, 2009;Norman et al, 2008;Kariyapperuma et al, 2011;Wolf et al, 2012). Groffman et al (2009) suggested that modelling peak fluxes associated with drying and rewetting events requires: (1) accurate simulation of moisture changes in different soil layers and complex shifts in utilisation of fast-and slow-cycling soil organic matter pools by microbes that take place during these events (Miller et al, 2005), and (2) daily or sub-daily simulations of both physical and biological processes (Kiese et al, 2005).…”

Section: Model Improvementmentioning

confidence: 99%

Effects of soil rewetting and thawing on soil gas fluxes: a review of current literature and suggestions for future research

et al. 2012

View full text Add to dashboard Cite

Abstract. The rewetting of dry soils and the thawing of frozen soils are short-term, transitional phenomena in terms of hydrology and the thermodynamics of soil systems. The impact of these short-term phenomena on larger scale ecosystem fluxes is increasingly recognized, and a growing number of studies show that these events affect fluxes of soil gases such as carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O), ammonia (NH3) and nitric oxide (NO). Global climate models predict that future climatic change is likely to alter the frequency and intensity of drying-rewetting events and thawing of frozen soils. These future scenarios highlight the importance of understanding how rewetting and thawing will influence dynamics of these soil gases. This study summarizes findings using a new database containing 338 studies conducted from 1956 to 2011, and highlights open research questions. The database revealed conflicting results following rewetting and thawing in various terrestrial ecosystems and among soil gases, ranging from large increases in fluxes to non-significant changes. Studies reporting lower gas fluxes before rewetting tended to find higher post-rewetting fluxes for CO2, N2O and NO; in addition, increases in N2O flux following thawing were greater in warmer climate regions. We discuss possible mechanisms and controls that regulate flux responses, and recommend that a high temporal resolution of flux measurements is critical to capture rapid changes in gas fluxes after these soil perturbations. Finally, we propose that future studies should investigate the interactions between biological (i.e., microbial community and gas production) and physical (i.e., porosity, diffusivity, dissolution) changes in soil gas fluxes, apply techniques to capture rapid changes (i.e., automated measurements), and explore synergistic experimental and modelling approaches.

show abstract

“…Most research suggests greater N 2 O emissions will occur with a higher N rate (Lessard et al, 1996;Jarecki et al, 2009;Dell et al, 2014;Halvorson et al, 2014). For example, Lessard et al (1996) reported a 0.47 kg ha -1 increase in N 2 O emissions when dairy manure rates increased from 170 to 339 kg N ha -1 .…”

mentioning

confidence: 99%