Impacts of agricultural measures on crop yields, soil quality and environment

Soil supports crop production, is an important buffer of environmental pollution by agro-chemicals, and represents the largest terrestrial carbon stock. For soil fertility, both macro- and micronutrient contents are important indicators, and soil organic carbon content is essential for assessing carbon stocks, particularly in relation to the threats of climate change and soil organic matter decline. Agricultural management can greatly influence both crop yields, soil quality, e.g., the accumulation of soil carbon (C), nitrogen (N), and phosphorus (P) and the environment by losses of C, N, and P to air and water. Management additionally affects other processes influencing soil quality such as soil erosion and compaction, 

The aims of MSc theses related to this topic is a quantification of impacts of agronomic management measures on either: (i) crop yields/ nutrient uptake and nutrient use efficiencies, (ii) soil quality, such as the soil carbon or phosphorous balance or soil compaction or (iii) nitrogen losses to air and water, based on published scientific field studies via meta-analytical techniques. The aim of each study is to identify most promising mitigation options via agricultural management, accounting for differences in agro-ecosystem properties. A distinction will be made in meta-analytical or empirical and process based soil models, while distinguishing  agro-ecological conditions affecting the impacts.  

Below the different topics are shortly described in three main themes: understanding the interactions among water and nutrients controlling crop production with a focus on field and farm level (theme 1), analysing the impacts of management on soil health and environmental quality (theme 2) and tailor-made solutions to improve the quality of surface water and groundwater (theme 3).