Nitrification Rates in Profiles of Differently Managed Soil Types

Hadas, A.; Feigenbaum, Sala; Feigin, A.; Portnoy, Rita

doi:10.2136/sssaj1986.03615995005000030018x

Cited by 35 publications

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“…The concentration of in the soil without nitrapyrin 3 NO -N increased slowly during the first 14 days of incubation (Table 2). Thereafter, concentration increased significantly (p#0.005) and a maximum of 60 mg kgG 1 was accumulated at day 28 NH with depth and depth may also affect nitrifiers population (Hadas at al., 1986). The accumulation of in the soil of (Fig.…”

Section: Resultsmentioning

confidence: 99%

Influence of Nitrification Inhibitor on Transformations and Recovery of N in Grassland Soil

Abbasi¹,

Adams²

2000

Pakistan J. of Biological Sciences

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Abstract:The recovery of both mineralized and applied N in soil-plant system is low throughout the world. Leaching, denitrification and NH 3 volatilization are thought to be the major N loss mechanisms responsible for low N recovery. The aim of this study was to evaluate the effect of nitrification inhibitor nitrapyrin on N transformations, recovery and to prevent formation of which could be lost by leaching and denitrification.

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Section: Resultsmentioning

confidence: 99%

Influence of Nitrification Inhibitor on Transformations and Recovery of N in Grassland Soil

Abbasi¹,

Adams²

2000

Pakistan J. of Biological Sciences

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“…The pH = 4.8 of soil I is far from optimal for autotrophic nitrification (Hadas et al, 1986;Granli and B~bckman, 1994) and, 157 therefore, nitrification rates were low. After incubation, the NH + concentration in the 0 mg kg -l treatment was higher than at the beginning of the experiment (11.2 mg N kg-I), indicating that NH + production by mineralization was higher than the consumption by nitrification (Table 3).…”

Section: Resultsmentioning

confidence: 99%

Effect of ammonium and nitrate application on the NO and N2O emission out of different soils

et al. 1996

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The effect of nitrate and ammonium application (0, 50, 100 and 150 mg N kg -1 soil) was studied in an incubation experiment. Four Belgian soils, selected for different soil characteristics, were used. The application of both nitrate and ammonium caused an increase of the NO and N20 emission. The NO production from nitrate and ammonium was found to be of the same order of magnitude. At low pH the NO production was found to be highest from nitrate, at higher pH values the production was found to be higher from ammonium. This seems to be the result of the negative effect of low pH on nitrification.The ANOVA analysis was carried out to separate the effect of the form of nitrogen, quantity of N applied and soil characteristics. The total production of NO was found to depend for 97% on the soil characteristics and for 3% on the quantity of N added. The total N20 production depended for 100% on the soil characteristics.Stepwise regression analysis showed that the total NO production was best predicted by a combination of the factors CaCO3 content and NH + concentration in the soil. Total N20 production was best described by a combination of CaCO3, water soluble carbon (WSC) and sand-content.The N20/NO ratio was found to be highly variable, indicating that their productions react differently to changes in conditions, or are partly independent.It may be concluded that to NO and N20 from soils both nitrification and denitrification may be equally important, their relative importance depending on local conditions such as substrate availability, water content of the soil etc. However, the NO production seems to be more nitrification dependent than the N20 production.

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“…During long-term incubation, the accumulation of NO3 − -N in soil (nitrification) follows an S-shaped function because there is a delay phase before rapid nitrification, followed by the maximal rate phase, until nitrification reaches a plateau with the exhaustion of NH4 + (Hadas et al 1986). The S-shaped curve can be described by the logistic model described by De Neve et al (2004) …”

Section: Data Processing and Statisticsmentioning

confidence: 99%

Effect of Biochar Application on the Efficacy of the Nitrification Inhibitor Dicyandiamide in Soils

Shi¹,

Zhang²,

Zhao³

2015

BioResources

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A series of laboratory incubation experiments was conducted to evaluate the effect of biochar application on the efficacy of the nitrification inhibitor (NI) dicyandiamide (DCD) in Cambisol (pH 7.14) and Latosol (pH 4.83). The feedstocks (eucalyptus wood, coconut coir, and rice straw), pyrolysis temperatures (350, 500, and 650 ˚C), and application rates (0.5, 1.0, 2.5, and 5.0% of 200 g soil) were identified as influential factors. The results showed that biochar could significantly reduce the effectiveness of DCD on nitrification inhibition. Biochar produced from eucalyptus wood with a large surface area (426.4 m 2 g −1 ) had the strongest ability to reduce the inhibitory effect of DCD in nearly neutral Cambisol, while biochar from rice straw with a high pH had the greatest influence on acidic Latosol. Increasing pyrolysis temperature and application rates can strengthen the ability of biochar to reduce the inhibitory effect of DCD. Generally, the decrease of the DCD nitrification inhibitory effect on nearly neutral soil was controlled by the surface area of the applied biochar; meanwhile, the rise of soil pH caused by biochar application was also an important influencing factor in acid soil.

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Nitrification Rates in Profiles of Differently Managed Soil Types

Cited by 35 publications

References 0 publications

Influence of Nitrification Inhibitor on Transformations and Recovery of N in Grassland Soil

Influence of Nitrification Inhibitor on Transformations and Recovery of N in Grassland Soil

Effect of ammonium and nitrate application on the NO and N2O emission out of different soils

Effect of Biochar Application on the Efficacy of the Nitrification Inhibitor Dicyandiamide in Soils

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