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Succesful promotion of Anna Michalczyk

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22.01.2020

Erfolgreiche Promotion von Anna Michalczyk

Ms Anna Michalczyk, external member of the Working Group Ecosystem Modelling, has defended successfully her PhD thesis on modelling nitrogen dynamics in wheat-maize double cropping rotations in the North China Plain on 11.12.2019.

She addressed the problem of excessive nitrogen application in chinese agriculture and their consequences for water pollution with nitrate. Above optimum fertilizer application and inefficient irrigation management led to low nitrogen use efficiency. Using a model based real-time recommendation on farmer´s field experiments, Anna was able to reduce N application rates while maintaining the yield level compared to other recommendation methods and farmer´s practice. At county scale she optimised water and nitrogen management with the model and could achieve a significant improvement of resource use efficiency.

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