E-Dissertationen: Search
Now showing items 541-550 of 578
Modeling the impact of biopores in the soil on root growth and root water uptake
(2019-06-19)
Background and Motivation: Biopores are tubular shaped cavities in the soil formed by biological activity that enable plant roots to reach water and nutrient reservoirs at greater depths. Especially during ...
Direct use of urine as fertilizer: potential risks of loading pharmaceuticals and hormones to field crops
(2019-04-11)
Ecological sanitation or Ecosan is an alternative approach to avoid the disadvantages of conventional water-based sanitation systems. This approach, based on ecosystem functioning and the closure of material flow cycles, ...
Spatial competition of learning agents in agricultural procurement markets
(2019-07-15)
Spatially dispersed farmers supply raw milk as the primary input to a small number of large dairy-processing firms. The spatial competition of processing firms has short- to long-term repercussions on farm and processor ...
Challenges and opportunities of using ecological and remote sensing variables for crop pest and disease mapping
(2019-07-15)
Crop pest and diseases are responsible for major economic losses in the agricultural systems in Africa resulting in food insecurity. Potential yield losses for major crops across Africa are mainly caused by pests and ...
Rice yield gaps in West Africa
(2019-05-15)
Rice is a staple food for many countries in Africa but the production has never satisfied the demand which largely depends on imports. Therefore, more efforts are needed for raising yield in order to reduce the gap between ...
Evaluation of 13C Mixed Triglyceride Breath Testing and Fecal Elastase 1 assays for the assessment of pancreatic function in babies with cystic fibrosis: Including an assessment of healthy babies to establish the range of normal for the 13C Breath test
(2019-02-19)
Evaluation of 13C Mixed Triglyceride Breath Testing and Fecal Elastase 1 assays for the assessment of pancreatic function in babies with cystic fibrosis (Including an assessment of healthy babies to establish ...
Suitability of non-destructive sensors for monitoring physiological and biochemical responses of tomato leaves and fruits to abiotic stresses
(2019-05-02)
The major aim of the present work was to proof the suitability of chlorophyll fluorescence-based indices to non-destructively monitor and predict changes in the content of plant compounds in response to abiotic stresses. ...
Development of a one-step three dimensional approach for the phase unwrapping process in a differential InSAR stack based on Small BAseline Subset (SBAS) interferograms
(2020-08-04)
Differential Interferometric Synthetic Aperture Radar (D-InSAR) is a unique technique to detect and map deformations of the Earth's surface over large temporal and spatial scales. Processing a whole stack of multitemporal ...
Insights into the salt stress adaptation mechanisms of bread wheat genotypes using a systemic approach
(2020-09-17)
Bread wheat is one of the most important crops for the human diet but the increasing soil salinization is causing yield reductions worldwide. The development of appropriate cultivars requires the elucidation of mechanisms ...
The Water-Energy-Food Nexus in the Eastern Nile Basin: Transboundary Interlinkages, Climate Change and Scope for Cooperation
(2019-02-04)
With worldwide mounting pressure in the three highly interrelated resources of water, energy, and food (WEF) the 'nexus' concept has emerged as the best approach to address the complex and dynamic problem facing the three ...