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
Six-legged livestock -- sustainable food production
11.05.2017 | Faculty of Science - University of Copenhagen
Elephant Herpes: Super-Shedders Endanger Young Animals
04.05.2017 | Universität Zürich
Staphylococcus aureus is a feared pathogen (MRSA, multi-resistant S. aureus) due to frequent resistances against many antibiotics, especially in hospital infections. Researchers at the Paul-Ehrlich-Institut have identified immunological processes that prevent a successful immune response directed against the pathogenic agent. The delivery of bacterial proteins with RNA adjuvant or messenger RNA (mRNA) into immune cells allows the re-direction of the immune response towards an active defense against S. aureus. This could be of significant importance for the development of an effective vaccine. PLOS Pathogens has published these research results online on 25 May 2017.
Staphylococcus aureus (S. aureus) is a bacterium that colonizes by far more than half of the skin and the mucosa of adults, usually without causing infections....
Physicists from the University of Würzburg are capable of generating identical looking single light particles at the push of a button. Two new studies now demonstrate the potential this method holds.
The quantum computer has fuelled the imagination of scientists for decades: It is based on fundamentally different phenomena than a conventional computer....
An international team of physicists has monitored the scattering behaviour of electrons in a non-conducting material in real-time. Their insights could be beneficial for radiotherapy.
We can refer to electrons in non-conducting materials as ‘sluggish’. Typically, they remain fixed in a location, deep inside an atomic composite. It is hence...
Two-dimensional magnetic structures are regarded as a promising material for new types of data storage, since the magnetic properties of individual molecular building blocks can be investigated and modified. For the first time, researchers have now produced a wafer-thin ferrimagnet, in which molecules with different magnetic centers arrange themselves on a gold surface to form a checkerboard pattern. Scientists at the Swiss Nanoscience Institute at the University of Basel and the Paul Scherrer Institute published their findings in the journal Nature Communications.
Ferrimagnets are composed of two centers which are magnetized at different strengths and point in opposing directions. Two-dimensional, quasi-flat ferrimagnets...
An Australian-Chinese research team has created the world's thinnest hologram, paving the way towards the integration of 3D holography into everyday...
24.05.2017 | Event News
23.05.2017 | Event News
22.05.2017 | Event News
26.05.2017 | Life Sciences
26.05.2017 | Life Sciences
26.05.2017 | Physics and Astronomy