The changes of soil nitrogen and carbon contents in a long-term field experiment under different systems of nitrogen fertilization

Nedvěd, V.; Balík, J.; Cerny, Joseph; Kulhánek, Martin; Balíková, M.

doi:10.17221/435-pse

Cited by 14 publications

(9 citation statements)

References 19 publications

(19 reference statements)

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“…As expected, the T+P+W treatment had significantly higher microbial diversity and biomass than the control, although the diversity and biomass in all treatments were still considerably lower than values reported for normal soils 15 16 . A substantial structural difference was observed between the control and treatments, with the emerging trend of increased organotroph-dominated microbes, compared to the lithotroph-dominated community in the tailings without amendment and plants.…”

Section: Discussionsupporting

confidence: 75%

From lithotroph- to organotroph-dominant: directional shift of microbial community in sulphidic tailings during phytostabilization

Bond

Nostrand

et al. 2015

Sci Rep

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Engineering microbial diversity to enhance soil functions may improve the success of direct revegetation in sulphidic mine tailings. Therefore, it is essential to explore how remediation and initial plant establishment can alter microbial communities, and, which edaphic factors control these changes under field conditions. A long-term revegetation trial was established at a Pb-Zn-Cu tailings impoundment in northwest Queensland. The control and amended and/or revegetated treatments were sampled from the 3-year-old trial. In total, 24 samples were examined using pyrosequencing of 16S rRNA genes and various chemical properties. The results showed that the microbial diversity was positively controlled by soil soluble Si and negatively controlled by soluble S, total Fe and total As, implying that pyrite weathering posed a substantial stress on microbial development in the tailings. All treatments were dominated by typical extremophiles and lithotrophs, typically Truepera, Thiobacillus, Rubrobacter; significant increases in microbial diversity, biomass and frequency of organotrophic genera (typically Nocardioides and Altererythrobacter) were detected in the revegetated and amended treatment. We concluded that appropriate phytostabilization options have the potential to drive the microbial diversity and community structure in the tailings toward those of natural soils, however, inherent environmental stressors may limit such changes.

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Section: Discussionsupporting

confidence: 75%

From lithotroph- to organotroph-dominant: directional shift of microbial community in sulphidic tailings during phytostabilization

Bond

Nostrand

et al. 2015

Sci Rep

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“…The field capacity indicator (socalled 'maximum capillary water capacity') varies between 0.30 and 0.35 m 3 /m 3 . The total organic carbon content in the topsoil is about 2.5% of dry matter (Nedvěd et al 2008). The land was used as arable.…”

Section: Methodsmentioning

confidence: 99%

Percolation in macropores and performance of large time-domain reflectometry sensors

Dolezal¹,

Matula²,

Barradas³

2012

PLANT SOIL ENVIRON

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The large-diameter time-domain reflectometry soil water sensors placed horizontally in a structured loamy soil are very sensitive to rapid preferential percolation events. Their readings on these occasions rise considerably, often becoming higher than the native soil's porosity. The effect is caused by gaps between the native soil and the sensors. The geometry of the gaps, even if filled with soil slurry at installation, is not exactly reproducible, which leads to sensor-to-sensor variability of readings. Field calibration in percolation-free periods lead to non-unique trajectories rather than monotonous calibration curves, which can be commented in terms of soil heterogeneity and the dual porosity theory. Data of two typical percolation events are presented. Sensors of this type can be used for detection of preferential flux.

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“…In our experiment based on the chernozem, the control treatment of the continuous growing of maize remained unfertilized 16 years long; despite of this the average yield of the dry matter was 11.18 t/ha, and during the time of this experiment, no evidential drop of the yield was documented. The (Ailincăi et al 2007, Nedvěd et al 2008, Černý et al 2010. The nitrogen content in the above-ground biomass.…”

Section: Resultsmentioning

confidence: 99%

The effect of mineral N fertiliser and sewage sludge on yield and nitrogen efficiency of silage maize

Cerny¹,

Balík²,

Kulhánek³

et al. 2012

Plant Soil Environ.

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A field experiment was conducted on a chernozem soil to estimate fertiliser N efficiency of silage maize (Zea mays L.) by the difference method as influenced by the type of N fertiliser (mineral-MF vs. sewage sludge-SS), and N rate. Eight N treatments were included (0, 60, 120, 180, and 240 kg N/ha prior to maize sowing, 60 kg N/ha at planting in MF; 120, and 240 kg N/ha in SS. The average dry mater (DM) yields were 11.2-14.8 t/ha. Average nitrogen uptakes were 88-185 kg N/ha, when the average N contents in DM were 0.8-1.25%. Nitrogen utilization efficiency (NUE) was a relatively stable value for treatments with MF. The best use of nitrogen from MF was reached by 60 and 120 kg/ha N doses. The average values of recovery efficiency of applied N (RE N ) were calculated as 41-57%. The use of SS increased the yield of silage maize by 19-25% compared to control, above all first and second year after their application. Mineral-fertilizer-N equivalents (MFE) for SS were calculated as 55 and 64%.

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The changes of soil nitrogen and carbon contents in a long-term field experiment under different systems of nitrogen fertilization

Cited by 14 publications

References 19 publications

From lithotroph- to organotroph-dominant: directional shift of microbial community in sulphidic tailings during phytostabilization

From lithotroph- to organotroph-dominant: directional shift of microbial community in sulphidic tailings during phytostabilization

Percolation in macropores and performance of large time-domain reflectometry sensors

The effect of mineral N fertiliser and sewage sludge on yield and nitrogen efficiency of silage maize

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