Soil mineral nitrogen dynamics under bare fallow and wheat in vertisols of semi-arid Mediterranean Morocco

1999 ◽  
Vol 28 (3) ◽  
pp. 321-328 ◽  
Author(s):  
M. Corbeels ◽  
G. Hofman ◽  
O. Van Cleemput
Keyword(s):  
Nitrogen Dynamics ◽  
Mineral Nitrogen ◽  
Soil Mineral ◽  
Soil Mineral Nitrogen ◽  
Bare Fallow ◽  
Semi Arid

Soil mineral nitrogen dynamics following repeated application of dairy slurry

2016 ◽  
Vol 67 (6) ◽  
pp. 804-815 ◽  
Author(s):  
D. Cavalli ◽  
P. Marino Gallina ◽  
D. Sacco ◽  
L. Bechini
Keyword(s):  
Nitrogen Dynamics ◽  
Mineral Nitrogen ◽  
Repeated Application ◽  
Soil Mineral ◽  
Soil Mineral Nitrogen

In situ ion exchange resin membrane (IEM) technique to measure soil mineral nitrogen dynamics in grazed pastures

2007 ◽  
Vol 44 (6) ◽  
pp. 805-813 ◽  
Author(s):  
Saman Bowatte ◽  
Russell Tillman ◽  
Andrew Carran ◽  
Allan Gillingham ◽  
David Scotter
Keyword(s):  
Ion Exchange ◽  
Exchange Resin ◽  
Ion Exchange Resin ◽  
Nitrogen Dynamics ◽  
Mineral Nitrogen ◽  
Soil Mineral ◽  
Soil Mineral Nitrogen ◽  
Grazed Pastures ◽  
Resin Membrane

The Nitrogen Dynamics of Multi-species Grasslands when Subject to Drought and Re-wetting.

2020 ◽  
Author(s):  
Saoirse Cummins ◽  
John Finn ◽  
Gary Lanigan ◽  
Karl Richards ◽  
Tom Misselbrook ◽  
...  
Keyword(s):  
Management Strategies ◽  
Background Level ◽  
Fertilizer Application ◽  
Nitrogen Dynamics ◽  
Mineral Nitrogen ◽  
Soil Mineral ◽  
Soil Mineral Nitrogen ◽  
Mineral N ◽  
Legacy Effect ◽  
Birch Effect

<p>It is predicted that climate change will result in more extreme and frequent weather events including flooding and drought. Nitrous oxide (N<sub>2</sub>O) is a potent greenhouse gas having 298 times the global warming potential of CO<sub>2</sub>. The ‘Birch effect’, the term given to high  N<sub>2</sub>O fluxes following the drying and re-wetting of soils, is an accelerator of this process. Multi species grasslands have been shown have higher nitrogen use efficiency and potential for drought resilience and recovery. This experiment analysed the nitrogen dynamics of multi-species grasslands by means of quantifying the responses of soil mineral nitrogen (NH<sub>4</sub><sup>+</sup> and NO<sub>3</sub><sup>-) </sup>and N<sub>2</sub>O fluxes during an eight week simulated drought, re-wetting and fertiliser application two weeks after the re-wetting event. A simplex experimental design was used to determine species and functional group effects which could potentially influence responses. The hypothesis of this study was therefore that multi species grasslands would mitigate the ‘Birch effect’ resulting in less erratic transformations of soil mineral nitrogen and lower N<sub>2</sub>O fluxes compared to monocultures. This study also predicted a lasting legacy effect of drought on soil systems resulting in prolonged heightened N<sub>2</sub>O fluxes. Drought resulted in a depletion of soil NO<sub>3-</sub>, increased  levels of NH<sub>4</sub><sup>+ </sup>and background level N<sub>2</sub>O emissions. Following re-wetting soil mineral N underwent transformations from NH<sub>4</sub><sup>+</sup> to NO3- indicating nitrification. Four times more N<sub>2</sub>O emissions were recorded during re-wetting period compared to fertilizer application. There was no lasting legacy effect of drought and re-wetting on N<sub>2</sub>O fluxes observed during fertilizer application two weeks after re-wetting bar T. repens which has implications for grassland management strategies.</p>

Influence of Nitrogen Form Supply on Soil Mineral Nitrogen Dynamics, Nitrogen Uptake, and Productivity of Sugarcane

2015 ◽  
Vol 107 (2) ◽  
pp. 641-650 ◽  
Author(s):  
Eduardo Mariano ◽  
José M. Leite ◽  
Michele X. V. Megda ◽  
Luis Torres-Dorante ◽  
Paulo C. O. Trivelin
Keyword(s):  
Nitrogen Uptake ◽  
Nitrogen Dynamics ◽  
Mineral Nitrogen ◽  
Nitrogen Form ◽  
Soil Mineral ◽  
Soil Mineral Nitrogen

Nitrogen dynamics following slurry injection in maize: soil mineral nitrogen

2016 ◽  
Vol 107 (1) ◽  
pp. 1-17 ◽  
Author(s):  
Matthias Westerschulte ◽  
Carl-Philipp Federolf ◽  
Dieter Trautz ◽  
Gabriele Broll ◽  
Hans-Werner Olfs
Keyword(s):  
Nitrogen Dynamics ◽  
Mineral Nitrogen ◽  
Soil Mineral ◽  
Soil Mineral Nitrogen ◽  
Slurry Injection
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