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Measures to reduce direct and indirect climate-relevant emissions that result from denitrification in agricultural soils - SP A (MinDen)
Project
Project code: 2822ABS027
Contract period: 01.12.2022
- 30.11.2026
Budget: 484,217 Euro
Purpose of research: Applied research
Keywords: crop production, fertilization, emissions, modeling, plant nutrition, rye, wheat, farmyard manure
Topics addressed by our project include the lowering of nitrous oxide emissions and improvement of nitrogen use efficiency through modelling, identification of measures to lower denitrification, and site-specific assessment of denitrification. Gaseous emissions from denitrification result in crop-relevant N losses as well as direct N2O fluxes from cropping systems. Climate protection measures for cropping systems that address fertilization, tillage and rotation are poorly investigated with respect to the role of denitrification. Crop management techniques for optimizing N efficiency and lowering N emissions are thus not yet reliably defined. The goal of this proposal is to identify mitigation measures for denitrification-related N2 and N2O emissions from arable soils in Germany. This will be done by improving knowledge of denitrification-related N losses through field and lab studies and by parametrisation, validation and application of simulation models. Our specific goals are to: • Regionalize denitrification-related N losses in Germany using existing models • Determine the impact of crop management measures for climate protection on N2 and N2O losses • Evaluate mitigation options at the model, lab and field scale taking into account the topsoil and subsoil rooting zone in different soils • Further develop denitrification models using existing and new measurement data, to improve their ability to evaluate mitigation options • Evaluate mitigation options for Germany using the improved models, considering yield, economics, technology, N2O emissions, N efficiency, fertilizer need, NH3 emissions and NO3- leaching
Section overview
Subjects
- Crop Production
- Soil science
Funding programme
Excutive institution
Funding institution
Project management agencies
Associated projects: MinDen
- Measures to reduce direct and indirect climate-relevant emissions that result from denitrification in agricultural soils SP B
- Measures to reduce direct and indirect climate-relevant emissions that result from denitrification in agricultural soils - SP C
- Identification of measures to reduce greenhouse gas emissions caused by denitrification of agricultural land - SP D
