As a result of global climate change, heavy rainfall events and dry periods are increasingly occurring in Germany, with consequences for the water solute balance soils to be expected. The effects change on nitrogen carbon leaching were investigated using 21 non-weighable manually filled lysimeters UFZ lysimeter facility Falkenberg, which have been managed since 1991 according principles best ma...

Stable isotope techniques can be used to investigate evapotranspiration and its partitioning into evaporation transpiration. However, verification is often difficult due missing information about actual evapotranspiration. Therefore, in this study a methodology tested for laboratory conditions was modified field applications. Evapotranspiration, which determined by weighing lysimeters, were com...

Insufficient water is the greatest limitation to crop production and choice of crops grown in the Northern Great Plains. Supplemental irrigation can overcome this limitation. Uncertainties about the drainage capacity of flne-textured subsoils and the effect of irrigation on soil properties has impeded irrigation development. In this study we quantified salinity changes in soils with fine-textur...

Direct measures of soil-surface respiration are needed to evaluate belowground biological processes, forest productivity, and ecosystem responses to global change. Although infra-red gas analyzer {IRGA) methods track reference COz flows in lab studies, questions remain for extrapolating I R G A methods to field conditions. We constructed 10 box lysimeters with homogenized mixtures of sandy loam...

The purpose of this model is to enable implementation of the theory of linear systems control in operational management of waste and fertiliser applications onto land, so that the underlying groundwater is protected from pollution by leachate. The state-space form of the model enables use of the extensive theory and available software on stochastic linear S)lstCms. In particular, the Kalman fil...