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Influence of legumes and the dissipation of growth from greening blends to the nitrous oxide emission in winter
Project
Project code: LTZ-178
Contract period: 01.12.2015
- 31.05.2016
Purpose of research: Applied research
To counteract a decrease in surface diversity, the EU calls for the provision of so-called ecological compensation areas (Greeningareas) when approving funding premiums in agricultural land use. This performance can be realized by farmers, for example in the form of sowing of mixtures with different legumes as a winter cover crop. A condition of the cultivation of greening blends it is that the nursery may not be used, therefore it must remain on the surfaces.
Approximately 50% of the annual emissions of climate-relevant trace gas nitrous oxide (N2O) occur outside of the growing season. N2O emissions in winter are currently parameterized inadequately. Some studies demonstrated a positive correlation between the winter emissions and nitrate contents of the topsoil, some studies were able to demonstrate increased emissions with decreasing C / N ratio (and thus potential mineralization before winter) remaining on the field crop residues.
Section overview
Subjects
- Agroecology
