E-Dissertationen: E-Dissertationen: Recent submissions
Now showing items 341-360 of 1107
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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 ... -
Studies on nematode factors activating the plant immune system
(2019-05-15)Plant-parasitic nematodes are destructive pests causing crop losses accounting for billions of dollars annually. To defend against invading pathogens plants rely on innate immune system which involves the recognition of ... -
Impact of ensiling conditions on formation of biogenic amines in grass and legume silages and feed intake behaviour of goats
(2019-05-14)Silage produced from small-grained legumes can contribute to the protein supply of ruminants. However, the susceptibility to protein degradation during harvest and the entire conservation process impedes to achieve high ... -
African nightshade and African spinach: A neglected and underutilized resource with significant potential to manage plant-parasitic nematodes
(2019-05-07)African indigenous vegetables (AIV) are essential for dietary diversification and ensuring nutritional requirements for people in sub-Sahara Africa. AIV have been largely marginalized by agriculture research, yet they are ... -
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, ... -
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. ... -
A water storage reanalysis over the European continent: assimilation of GRACE data into a high-resolution hydrological model and validation
(2019-04-18)<p>Continental water storage and redistribution within the Earth’s system are key variables of the terrestrial water cycle. Changes in water storage and fluxes may affect resources for drinking water and irrigation, lead ... -
Bio-ecology of the African citrus triozid Trioza erytreae Del Guercio (Hemiptera: Triozidae) on citrus in Kenya: implication for its management
(2019-03-12)Citrus production is a major industry in Kenya. Apart from providing income and jobs, it contributes to food and nutritional security. For the last decade, citrus production has experienced a continuous decline, particularly ... -
Drivers of change, adaptation and resilience of agricultural systems facing increased salinity intrusion in deltaic coastal areas of Vietnam
(2019-02-19)This PhD research aimed to examine historical and present drivers of agricultural changes in the Mekong (MKD) and Red River (RRD) deltas in Vietnam since 1975 as well as explore adaptation pathways and resilience of ... -
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 <sup>13</sup>C 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 ... -
Performance evaluation of reservoir-based irrigation schemes in the Upper East region of Ghana
(2019-02-19)The design of relevant adaptation strategies for water users in irrigation schemes in drylands of Sub-Saharan Africa requires up-to-date information about the current performance of these schemes in view of rapid changes ... -
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 ... -
Identification of plant recognition receptors for nematode derived molecular patterns
(2019-01-24)Plant parasitic nematodes are pathogens of great economic importance causing major losses in various food crops world-wide. A reliable, effective and efficient control method is establishing resistant cultivars of which ... -
Trade policy representation in applied equilibrium models
(2019-01-14)The success of the Uruguay Round of multilateral trade negotiations revealed the political viability and economic importance of global trade liberalization. Although subsequent multilateral negotiations have been less ... -
Einfluss von Miscanthus-Genotyp und Erntezeit auf Gehalt und Struktur von Lignin aus Organosolv-Verfahren
(2019-01-09)<em>Miscanthus</em> bietet als nachwachsende Industrie- und Energiepflanze zahlreiche Vorteile, die neben den direkten landwirtschaftlichen Anwendungen wie Verbrennung und Tiereinstreu auch eine stoffliche Nutzung im ... -
Assessment of incidence, severity and distribution patterns of citrus greening in Kenya and Tanzania; the role of African Citrus Triozid endosymbionts in disease epidemiology
(2019-01-02)Infestation by insect pests and infection of disease causing pathogens are among the major biotic constraints hindering production, profitability and contribution of citrus to economic development. The African citrus triozid ... -
Extrinsic Calibration and Ego-Motion Estimation for Mobile Multi-Sensor Systems
(2018-12-20)Autonomous robots and vehicles are often equipped with multiple sensors to perform vital tasks such as localization or mapping. The joint system of various sensors with different sensing modalities can often provide better ... -
Deciphering the role of apoplastic root barriers in the interaction between sedentary nematodes and Arabidopsis
(2018-12-13)The plant-parasitic nematode species Heterodera schachtii and Meloidogyne incognita infect economically important crop plants in the entire world. Their infection causes yield losses, but effective and environmentally ... -
Metabolic profiling in serum and muscle of dairy cows during the periparturient period and the subsequent lactation
(2018-12-17)The transition period in dairy cows, spanning three weeks before and after parturition, is characterized by complex metabolic processes required for the homeorhetic adaptation to the needs of late pregnancy and the onset ... -
Identification and functional characterization of core effectors from cyst nematodes through comparative genomics
(2018-12-18)Plant parasitic nematodes (PPNs), are one of the most important constraints in agricultural production causing substantial losses in quantity and quality of food. The economically most important PPNs are the sedentary ...
