Effect of Temperature on Denitrification Rate in Soils

Stanford, George; Dzienia, S.; Pol, Roger A. Vander

doi:10.2136/sssaj1975.03615995003900050024x

Cited by 168 publications

(84 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The strong non-linear effect of temperature on in stream production of N 2 O (Fig. 7) likely reflects the first order control of microbial activity by temperature that has been well demonstrated for denitrification through laboratory studies (Nowicki 1994;Pfenning and McMahon 1997;Stanford et al 1975). Another field based study of in-stream denitrification also observed a positive relationship between temperature and instream denitrification .…”

Section: Controls Of N 2 and N 2 O Productionmentioning

confidence: 63%

Balancing watershed nitrogen budgets: accounting for biogenic gases in streams

et al. 2016

View full text Add to dashboard Cite

Denitrification is critical for removal of reactive nitrogen (Nr) from ecosystems. However, measuring realistic, scalable rates and understanding the role of denitrification and other dissimilatory processes in watershed nitrogen (N) budgets remains a significant challenge in biogeochemistry. In this study, we focused on the stream reach and network scale in three Mid-Atlantic coastal plain watersheds. We applied open channel methods to measure biogenic N 2 and N 2 O gas fluxes derived from both in-stream and terrestrial nitrogen processing. A large portion of biogenic N 2 flux through streams (33-100 %, mean = 74 %) was a result of groundwater delivery of biogenic N 2 with the remaining portion due to instream N 2 production. In contrast, N 2 O was largely produced in-stream, with groundwater delivery contributing on average 12 % of the total biogenic N 2 O flux. We scaled these measurements across one stream network and compared them to hydrologic Nr export and net anthropogenic N inputs (NANI) to a 4.8 km 2 watershed. The N budget revealed that, during the study period, the biogenic N 2 flux through streams was comparable to the difference between NANI and hydrologic Nr export (i.e. the ''missing'' N). This study provides a methodological and conceptual framework for incorporating terrestrial and in-stream derived biogenic N gas fluxes into watershed N budgets and supports the hypothesis that denitrification is the primary fate of NANI that is not exported in streamflow.

show abstract

Section: Controls Of N 2 and N 2 O Productionmentioning

confidence: 63%

Balancing watershed nitrogen budgets: accounting for biogenic gases in streams

et al. 2016

View full text Add to dashboard Cite

show abstract

“…(Cassman and Munns 1980;Vigil et al 2002). The negative relationship between T 2 and NNP possibly reflects increased denitrification rates at higher temperatures (Stanford et al 1975). Using the study's (Amundson et al 2003).…”

Section: Precipitation Contextmentioning

confidence: 99%

“…Net nitrate production model R statistical software (The R Foundation for Statistical Computing, Vienna, Austria, 2013) was used to estimate a linear regression specification of NNP at the subfield level, which characterizes a more practical model for assessing and making insights about farmlevel management decisions than NNP at specific 0.6 m 2 sampling locations. Existing literature describes a number of variables that influence N mineralization and denitrification rates; those cited most often include soil temperature (Stanford et al 1973(Stanford et al , 1975Curtin et al 2012), soil water content (Paul et al 2003;Heumann et al 2011) and soil TN (Vigil et al 2002). Other variables discussed in the literature include crop residue C:N ratio (Booth et al 2005;Patron et al 2007), soil organic matter (Booth et al 2005;Heumann et al 2014) and previous crop (Soon and Arshad 2002).…”

Section: N Mineralization and Denitrificationmentioning

confidence: 99%

Fallow replacement and alternative nitrogen management for reducing nitrate leaching in a semiarid region

John

Jones

Ewing

et al. 2017

Nutr Cycl Agroecosyst

View full text Add to dashboard Cite

Nitrate (NO 3 -) leaching into groundwater is a growing global concern for health, environmental, and economic reasons, yet little is known about the effects of agricultural management practices on the magnitude of leaching, especially in dryland semiarid regions. Groundwater nitrate-nitrogen (nitrate-N) concentrations above the drinking water standard of 10 mg L -1 are common in the Judith River Watershed (JRW) of semiarid central Montana. A 2-year study conducted on commercial farms in the JRW compared nitrate leaching rates across three alternative management practices (AMP: pea, controlled release urea, split application of N) and three grower standard practices (GSP: summer fallow, conventional urea, single application of urea). Crop biomass and soil were collected at ten sampling locations on each side of a management interface separating each AMP from its corresponding GSP. A nitrogen (N) mass balance approach was used to estimate the amount of nitrate leached annually. In 2013, less nitrate leached the year after the pea AMP (18 ± 2.5 kg N ha -1 ) than the year after the fallow GSP (54 ± 3.6 kg N ha -1 ), whereas the two AMP fertilizer treatments had no effect on nitrate leaching compared to GSPs. In 2014, leaching rates did not differ between each AMP and its corresponding GSP. The results suggest that replacing fallow with pea has the greatest potential to reduce nitrate leaching. Future leaching research should likely focus on practices that decrease deep percolation, such as fallow replacement with annual or perennial crops, more than on N fertilizer practices.

show abstract

“…An anaerobic environment with the absence of oxygen gas can help produce more N 2 than some intermediates such as N 2 O (Saleh-Lakha et al, 2009). A temperature range from 15 to 35 °C is optimal for denitrification (Stanford et al, 1975). From these studies, we can see that these limiting factors are unlikely to adversely affect the progress of denitrification in subsurface environments below the ground water table.…”

Section: Soil Desaturation Through the Microbial Denitrificationmentioning

confidence: 88%

Mitigation of soil liquefaction using microbially induced desaturation

Chu

et al. 2016

J. Zhejiang Univ. Sci. A

View full text Add to dashboard Cite

Soil liquefaction can cause disastrous consequences to buildings and human lives. Regular countermeasures against soil liquefaction are often overly expensive for normal buildings and structures. This could be the major reason that liquefaction induced damage is still widely encountered in large-and mid-size earthquakes in recent years. In this paper, a new method for the mitigation of soil liquefaction using the microbially induced soil desaturation is proposed and tested. The desaturation effect in soil is achieved by the generation of nitrogen gas produced from the microbial denitrification process. Some major issues related to this method are experimentally investigated. These include soil desaturation procedures, shapes and distribution of gas bubbles in soil, mechanical responses and liquefaction resistance of desaturated soils, and stability of gas in soils. The desaturation treatment of soils is made simply by introducing denitrifying bacteria and a desaturation solution into soil pores by mixing, flushing, or injection. The degree of saturation can be reduced as the microbial reaction proceeds. Experimental results show that the final degree of saturation is related to the initial nitrate concentration added to the soil: the higher the concentration of nitrate in the desaturation solution, the lower the degree of saturation that can be achieved. The existence of gas bubbles in soil is evidenced by computer tomography (CT) technology. The CT images reveal that gas is in the form of small pockets which has a size a little larger than the mean size of sand grains. It is shown in the shaking table tests that microbially induced desaturation can effectively improve the liquefaction resistance of soil by showing a much lower pore pressure generation, much smaller volumetric strain, and much smaller settlement of the structure in desaturated soil, as compared with those in saturated soil. Triaxial consolidated undrained tests reveal that the desaturation treatment of soil can improve the undrained shear strength of loose sand. The stability of gas is tested under hydrostatic and water flow conditions. The gas phase is stable under the hydrostatic condition, but unstable under water flow conditions. So measures ought to be taken to prevent steady flow in practice.

show abstract

Effect of Temperature on Denitrification Rate in Soils

Cited by 168 publications

References 0 publications

Balancing watershed nitrogen budgets: accounting for biogenic gases in streams

Balancing watershed nitrogen budgets: accounting for biogenic gases in streams

Fallow replacement and alternative nitrogen management for reducing nitrate leaching in a semiarid region

Mitigation of soil liquefaction using microbially induced desaturation

Contact Info

Product

Resources

About