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Yield development and optimised N fertilisation in a changing climate (KlimaN)


Increasing climate variability raises yield variability and thus makes it more difficult to apply N fertiliser in line with demand. As a result, the risk of unused N increases. KlimaN investigates how the possible increase in unfavourable weather patterns under climate change affects N use and develops strategies for N fertilisation and fertilisation policy adapted to climate change.



  • Analysis of German farm data on yields and N-fertilisation with special consideration of extreme weather conditions
  • Simulation of different N fertilisation strategies and other adaptation strategies such as variety selection under the conditions of climate change for relevant production regions in Germany until the end of the century using process-based agroecosystem models
  • Evaluation of different N fertilisation strategies taking into account farm risk management and quality-relevant late N fertilisation (especially for wheat) in early summer and analysis of options to adapt fertilisation policy to climate change


Climate effect under consideration

Reduction of N2O emissions by reducing nitrogen surpluses on agricultural land

Contact persons

Thünen Institute, Coordination Unit
Climate and Soil

Dr. Mareike Söder


Thünen Institute, Institute of Farm Economics

Dr. Frank Offermann

Dr. Michael Danne

JKI, Institute for Strategies and
Technology Assessment

Dr. Til Feike

Links to project pages:  KlimaN / Thünen und KlimaN / JKI


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