Agriculture is responsible for 8% of the total emissions of greenhouse effect gases and so, given the EU adhesion to the 1997 Kyoto protocol, it is obliged to assume a certain percentage in the reduction of these emissions. 41% of nitrous oxide (N2O) emissions of human origin in Europe comes from agriculture. The soil, through microbic processes of nitrification and denitrification, is deemed to be mainly responsible for these N2O emissions, contributing to NO emissions also.
Meadowlands form a system with a high potential for the emission of these gases, given their high quantity of organic material and the high levels of fertilisation to which intensive agriculture subjects them. In this study the following factors in N2O and NO emission in meadowlands have been investigated: fertilisation, the water content in the soil, tillage and the use of nitrification inhibitors.
The results obtained indicate that the clay soils studied in the Basque Country show a high level of nitrification. As a consequence, the Nitrogen from applications of organic residues is quickly transformed into a mineral Nitrogen which is susceptible to loss to the atmosphere in the form of oxides of Nitrogen and mainly as a consequence of nitrification. The addition of inhibitors of nitrification is a recommended practice for this type of fertiliser. The N2O emissions derived from mineral fertilisation with ammmonium calcium nitrate are mainly produced through desnitrification, and it is therefore recommended to adjust the mineral fertiliser rather than have to use it in conjunction with DCD. Practices like tillage have a negative effect, provoking N2O and NO emissions even over and above the levels recorded in highly fertilised but untilled areas. Given that it is common practice to dig up a field for the cultivation of forage maize, tillage using nitrogen-based fertilisation should be well-spaced so as to avoid high NO and N2O emissions
New research recovers nutrients from seafood process water
31.10.2018 | Chalmers University of Technology
Plant Hormone Makes Space Farming a Possibility
17.10.2018 | Universität Zürich
Researchers at the University of New Hampshire have captured a difficult-to-view singular event involving "magnetic reconnection"--the process by which sparse particles and energy around Earth collide producing a quick but mighty explosion--in the Earth's magnetotail, the magnetic environment that trails behind the planet.
Magnetic reconnection has remained a bit of a mystery to scientists. They know it exists and have documented the effects that the energy explosions can...
Biochips have been developed at TU Wien (Vienna), on which tissue can be produced and examined. This allows supplying the tissue with different substances in a very controlled way.
Cultivating human cells in the Petri dish is not a big challenge today. Producing artificial tissue, however, permeated by fine blood vessels, is a much more...
Faster and secure data communication: This is the goal of a new joint project involving physicists from the University of Würzburg. The German Federal Ministry of Education and Research funds the project with 14.8 million euro.
In our digital world data security and secure communication are becoming more and more important. Quantum communication is a promising approach to achieve...
On Saturday, 10 November 2018, the research icebreaker Polarstern will leave its homeport of Bremerhaven, bound for Cape Town, South Africa.
When choosing materials to make something, trade-offs need to be made between a host of properties, such as thickness, stiffness and weight. Depending on the application in question, finding just the right balance is the difference between success and failure
Now, a team of Penn Engineers has demonstrated a new material they call "nanocardboard," an ultrathin equivalent of corrugated paper cardboard. A square...
09.11.2018 | Event News
06.11.2018 | Event News
23.10.2018 | Event News
16.11.2018 | Health and Medicine
16.11.2018 | Life Sciences
16.11.2018 | Life Sciences