Nitrate production is mainly heterotrophic in an acid dairy soil with high organic content in Australia

Suter, Helen; Hayden, Helen L.; He, Ji‐Zheng; Chen, Deli

doi:10.1007/s00374-015-1026-z

Cited by 24 publications

(7 citation statements)

References 25 publications

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“…Regarding the highest inhibitory effect on nitrification in dairy pasture soil, this may be due to nitrification in the dairy pasture soil being largely autotrophic. This can be supported by our previous study (Liu et al, 2015b) where we indicated that nitrification was primarily autotrophic with heterotrophic nitrification accounting for only 20%. In the alkaline sandy soil, C2H2 inhibition of NO3production was only 29%, thus 1% v/v of C2H2 may be insufficient to inhibit nitrification completely in this soil, nevertheless, most studies have indicated that this partial pressure of C2H2 is clearly sufficient for a complete inhibition.…”

Section: Inhibitory Effects Of C2h2 In Different Soilssupporting

confidence: 84%

Effects of the nitrification inhibitor acetylene on nitrous oxide emissions and ammonia-oxidizing microorganisms of different agricultural soils under laboratory incubation conditions

Hayden²,

et al. 2017

Applied Soil Ecology

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Acetylene (C2H2) is an effective nitrification inhibitor targeting autotrophic ammonia oxidizers, and has shown promise for improving nitrogen use efficiency by mitigating greenhouse gas nitrous oxide (N2O) emissions and reducing nitrate leaching. Its efficacy, however, varies considerably with edaphic and environmental conditions and remains largely less studied in dryland agricultural soils. Here we conducted two laboratory microcosm incubations to explore the efficacy of C2H2 across various agricultural soils and under different conditions. The first incubation was with four agricultural soils at 25C and 60% water-filled pore space (WFPS), and the second incubation included one cropping soil under a range of conditions (15C, 25C, 35C and 50%, 70% WFPS). Our results showed that incubation of soil with 1% v/v C2H2 resulted in complete or partial inhibition of nitrification, N2O emission, and AOA or AOB growth under the experimental conditions. Acetylene can totally inhibit nitrification in acidic cropping and dairy pasture soils through retarding both AOA and AOB growth, while C2H2 partly inhibited nitrification and N2O emission in the alkaline vegetable soil through impeding only AOB growth. The highest inhibition effect of C2H2 was achieved at 25C and 50% WFPS, while there was no inhibitory effect of C2H2 when soil was incubated at 15C and 50% WFPS suggesting soil temperature may have a significant influence on C2H2 effectiveness. The inhibition of C2H2 on cumulative N2O emission increased with increasing temperature at 50% WFPS. In contrast, at 70% WFPS, the inhibition of C2H2 on cumulative N2O emission decreased with increasing temperature. Since the effect of C2H2 varied with soils and environmental conditions, this highlights the assumption that N2O production and nitrification can be affected by low concentrations of C2H2 may be not appropriate in some occasions.

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Section: Inhibitory Effects Of C2h2 In Different Soilssupporting

confidence: 84%

Effects of the nitrification inhibitor acetylene on nitrous oxide emissions and ammonia-oxidizing microorganisms of different agricultural soils under laboratory incubation conditions

Hayden²,

et al. 2017

Applied Soil Ecology

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“…DMPP was recently developed in Germany, and this inhibits nitrification at low concentrations of 0.5-1.0 kg active compound ha −1 ; this amount is less than one-tenth of the DCD applied [22]. erefore, the price of the urea fertilizer [27]) and animal manure (Dittert et al [28]; Hatch et al [29]; Maienza et al [30]). Shi et al [31] reported that DMPP slowed nitrification by inhibiting the growth of AOB, and DMPP application affected the abundance of AOB more than the ammonia oxidizer community composition.…”

Section: Introductionmentioning

confidence: 99%

Effect of the Nitrification Inhibitor 3,4-Dimethylpyrazole Phosphate on the Deep Placement of Nitrogen Fertilizers for Soybean Cultivation

Hatano

Fujita

Nagumo

et al. 2019

International Journal of Agronomy

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The deep placement of urea fertilizer (DMU) containing 1% (W/W) of the nitrification inhibitor 3,4-dimethylpyrazole phosphate (DMPP) on soybean growth and seed yield was as effective as those of the coated urea (CU) and lime nitrogen (LN) in a field research. The average seed yields were high in LN (464 g·m−2) and DMU (461 g·m−2) and relatively low in CU (405 g·m−2), U (396 g·m−2), and Cont (373 g·m−2) treatments. The accumulations of dry matter and nitrogen in soybean shoots were higher in the plants with deep placement of CU, LN, and DMU than U and Cont. The daily nitrogen fixation activity and daily nitrogen absorption rate were calculated based on the relative ureide method. Both nitrogen fixation activity and nitrogen absorption rate were higher in DMU, CU, and LN compared with control treatment, suggesting that the deep placement of DMU did not repress nitrogen fixation. Soil incubation test was performed using the same field soil with DMU, U, LN, and urea with DMPP 1%, 2%, and 4%. DMU inhibits nitrification similar to the pattern of LN until 8 weeks. The increasing DMPP concentration did not markedly increase the nitrification inhibition. From these results, it was concluded that urea fertilizer with 1% DMPP is efficient for deep placement of N fertilizer for soybean cultivation due to its lower price compared with CU and LN.

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“…Ammonia oxidation, as the rate-limiting step of nitrification, is catalyzed by AMO encoded by the amoA gene within the following two distinct groups of nitrifying microbes: ammonia-oxidizing bacteria (AOB) and ammonia-oxidizing archaea (AOA) (BrochierArmanet et al 2008;Purkhold et al 2000). Of the available NIs, 3,4-dimethylpyrazole phosphate (DMPP) has been widely used together with synthetic N fertilizers (Weiske et al 2001;Di and Cameron 2011;Liu et al 2015) and animal manure (Hatch et al 2005;Fangueiro et al 2009;Maienza et al 2014). To achieve comparable effects, DMPP requires much lower application rates than other NIs such as dicyandiamide (DCD) (Chaves et al 2005;Chen et al 2008).…”

Section: Introductionmentioning

confidence: 99%

Effects of 3,4-dimethylpyrazole phosphate (DMPP) on nitrification and the abundance and community composition of soil ammonia oxidizers in three land uses

Shi

et al. 2016

Biol Fertil Soils

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The application of the nitrification inhibitor, 3,4-dimethylpyrazole-phosphate (DMPP), is considered as an effective strategy to mitigate agricultural nitrogen loss. However, the inhibitory effect of DMPP on nitrification is variable and the importance of the soil microbial community composition to the variability is poorly understood. In this study, nine soils were collected across three land uses to investigate the impact of DMPP on nitrification and associated dynamics of ammonia oxidizers in a 28-day microcosm incubation. The results showed that the efficacy of DMPP at inhibiting net nitrification rates varied highly from no effect to 63.6 % during the first week of incubation. The abundance of ammonia-oxidizing bacteria (AOB), rather than ammoniaoxidizing archaea (AOA), was significantly correlated with nitrate concentrations across three land uses and significantly inhibited by DMPP addition. DMPP had higher efficacy in neutral and alkaline wheat and vegetable soils, compared with pasture soils. Canonical correspondence analysis suggested that soil pH was the most influential factor explaining the community composition of AOB and AOA in the collected soils. However, neither ammonium nitrate nor DMPP addition had a significant effect on the community composition of AOB or AOA during the incubation indicated by non-metric multidimensional scaling ordination. Taken together, our findings indicated that DMPP slowed nitrification by inhibiting the growth of AOB, and DMPP application affected the abundance of AOB more than the ammonia oxidizer community composition.

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Nitrate production is mainly heterotrophic in an acid dairy soil with high organic content in Australia

Cited by 24 publications

References 25 publications

Effects of the nitrification inhibitor acetylene on nitrous oxide emissions and ammonia-oxidizing microorganisms of different agricultural soils under laboratory incubation conditions

Effects of the nitrification inhibitor acetylene on nitrous oxide emissions and ammonia-oxidizing microorganisms of different agricultural soils under laboratory incubation conditions

Effect of the Nitrification Inhibitor 3,4-Dimethylpyrazole Phosphate on the Deep Placement of Nitrogen Fertilizers for Soybean Cultivation

Effects of 3,4-dimethylpyrazole phosphate (DMPP) on nitrification and the abundance and community composition of soil ammonia oxidizers in three land uses

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