The Faculty of Agriculture: Browsing Landwirtschaftliche Fakultät by Title
Now showing items 286-305 of 1262
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Distribution and molecular characterization of aflatoxin-producing and nonproducing isolates of Aspergillus section Flavi for biological control of aflatoxin contamination in maize in Nigeria
Donner, Matthias (2009-03-10)Fungal communities in soils of Nigerian maize fields were examined to determine distributions of aflatoxin-producing fungi and to identify endemic atoxigenic strains of potential value as biological control agents for ... -
Distribution, Population Dynamics and Sustainable Management of Plant-Parasitic Nematodes Associated with Cut-Flowers in Ethiopia
Meressa, Beira Hailu (2014-09-12)Plant-parasitic nematodes are a growing concern for the floriculture industry in Ethiopia. Two surveys were conducted during the wet season (August to September 2011) and dry season (April to May 2012) to assess the incidence ... -
Distributions-, Transport- und Lagerungsmodell (DTL-Modell) zur Prognose des Frischeverlustes kühlbedürftiger Lebensmittel
Lettmann, Thomas (2007)Die vorliegende Arbeit hatte zum Ziel, Zusammenhänge zwischen Schwankungen der Umgebungstemperatur eines Produktes in der Kühlkette vom point of sale bis zur Kühlschranklagerung im Haushalt mit Hilfe eines Simulationsmodells ... -
Diversity of Stingless Bees in Bamenda Afromontane Forests – Cameroon: Nest architecture, Behaviour and Labour calendar
Njoya, Moses Tita Mogho (2010-01-20)Until now almost nothing was known of invertebrates such as wild bees in the Bamenda highland forest region in Cameroon. This study focuses on honey producing bee species which do not possess functional stings. The diversity ... -
Dormancy in temperate fruit trees - Perspectives for farming in a changing climate
Fernández Collao, Eduardo (2021-05-26)Deciduous fruit trees, which originated in temperate climates, exhibit an inactive period (i.e. dormancy) between late autumn and early spring. This period allows trees to endure the severe winter temperatures usually ... -
Drinking behaviour of llamas (Lama glama) and horses (Equus caballus) in response to saline drinking water
Enke, Nick (2023-03-24)Saline drinking water can play an important role in the nutrition of domestic animals, either through the salinization of natural drinking water sources or the intentional application as part of rehydration therapy after ... -
Drivers of change, adaptation and resilience of agricultural systems facing increased salinity intrusion in deltaic coastal areas of Vietnam
Nguyen, Minh Tu (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 ... -
Drying front formation in topmost soil layers as evaporative restraint: Non-invasive monitoring by magnetic resonance and numerical simulation
Merz, Steffen (2017-04-04)Prediction of soil moisture changes on large scales is of various interests with regard to water resources management. Within this PhD work, different Magnetic Resonance (MR) concepts/apparatus and sequences were applied ... -
Durchflußzytometrische Detektion von Adrenocorticotropem Hormon in humanen Leukozytenpopulationen unter leistungsphysiologischen Kulturbedingungen
Linscheid, Karl Peter (2003)In Analogie zur systemischen Streßreaktion beschreibt die zelluläre Leistungsphysiologie Anpassungsmechanismen gegenüber belastenden Umweltfaktoren im mikroskopischen Maßstab. Neuropeptide aus Proopiomelanocortin, die in ... -
Dynamics of Adjustment in Agriculture: Essays on Dairy Productivity, Dairy Quota System and Sustainable Corn Production
Marton, Tibor András (2024-07-11)The thesis comprises an introduction and three separate essays on aspects of agricultural adjustment processes. The essays specifically address (1) how the productivity of milk production in Norway changes between different ... -
The dynamics of dietary change of transitional food systems in tropical forest areas of Southeast Asia: The contemporary and traditional food system of the Katu in the Sekong Province, Lao PDR
Krahn, Jutta (2005)From a nutritional point of view, this thesis started with the hypothesis that Laos is lacking a food security concept which sufficiently responds to the country’s unique cultural and biological resources, and as such to ... -
Dynamics of multiple elements in litter decomposition under various disturbances
Zhuang, Liyan (2023-09-29)Both artificial disturbance and climate change regimes can strongly affect soil carbon (C) sequestration and nutrient dynamics through decomposition processes of above- and belowground residues in terrestrial ecosystems. ... -
Dynamics of nitrogen and phosphorus under the impact of climate change and agricultural land use in the West African Sudan Savannah
Amouzou, Kokou Adambounou (2018-01-16)Changing climate and agricultural land-use dynamics seriously challenge the future of cropping in the West African Dry Savannah, and, in turn, the livelihoods and food security of rural populations. Current production ... -
Dynamik des spezifisch gebundenen Ammoniums unter Einfluss der Fruchtfolge und der Wurzelarchitektur landwirtschaftlicher Nutzpflanzen
Beuters, Patrick (2014-06-24)Ziel der vorliegenden Arbeit war es, den Beitrag des im Unterboden spezifisch gebundenen Ammoniums (spez. geb. NH<sub>4</sub><sup>+</sup>) für die Stickstoffernährung von Nutzpflanzen zu erfassen. Dazu wurden Einflussfaktoren ... -
Early detection and discrimination of biotic and abiotic stresses in Triticum aestivum and Malus domestica by means of chlorophyll fluorescence
Kuckenberg, Jan (2008)The key objective of this work was to assess the potential of selected chlorophyll fluorescence techniques for detection of temporal and spatial changes in leaf and plant response to economically important stress factors ... -
Early transcriptomic plasticity in barley (Hordeum vulgare L.) seminal roots in response to abiotic stress
Klaus, Alina (2024-05-15)Water deficit and soil salinity negatively affect plant growth and thus pose major threats to agricultural production and food security. Already one of these factors results in economic damage, while a combination of both ... -
Ecological interactions of Fusarium species and the meal beetle Tenebrio molitor
Guo, Zhiqing (2015-10-14)Contamination of stored grains by moulds and their mycotoxins results in quality and nutritional reduction. Ingestion of contaminated products and feed poses a significant hazard to human and animal health. The moulds ... -
Ecological sanitation via thermophilic co-composting of humanure and biochar as an approach to climate-smart agriculture
Castro Herrera, Daniela (2022-06-01)Lack of basic sanitation and appropriate waste management, limited access to mineral and organic fertilizers, and land degradation are major public health and food security challenges, particularly in developing regions ... -
Econometric specification of constrained optimization models
Jansson, Torbjörn (2007)This thesis provides a general estimation framework for econometric specification of constrained optimization models, with special attention to problems arising when (i) inequality constraints are present in the constrained ... -
Economic analysis of water use and management in the Middle Drâa valley in Morocco
Heidecke, Claudia (2010-02-17)In arid and semi arid regions of the world irrigation is crucial for agricultural production as it stabilizes the water supply for crops and, hence, prevents extreme fluctuations in production and prices. In the Drâa river ...