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Dissertation
Upgrading Starchy Staples for Tackling Malnutrition in South-West Ethiopia
(2018)
Child undernutrition is a critical public health challenge in Ethiopia. One of the immediate causes of child undernutrition is inadequate dietary intake as a result of relying on one or few starchy staples. Utmost attention should be given to improving diets of infants and young children if significant and fast changes are to be seen in the reduction of undernutrition. This dissertation examines the potentials of utilising appropriate food processing technologies for developing upgraded food products for infants and ...
Aufsatz
Morphological and Genetic Diversity of Sea Buckthorn (Hippophae rhamnoides L.) in the Karakoram Mountains of Northern Pakistan
(2018-07-30)
Sea buckthorn (Hippophae rhamnoides L.) is a dioecious, wind-pollinated shrub growing in Eurasia including the Karakoram Mountains of Pakistan (Gilgit-Baltistan territory). Contrary to the situation in other countries, in Pakistan this species is heavily underutilized. Moreover, a striking diversity of berry colors and shapes in Pakistan raises the question: which varieties might be more suitable for different national and international markets? Therefore, both morphological and genetic diversity of sea buckthorn ...
Aufsatz
Estimation of Vegetable Crop Parameter by Multi-temporal UAV-Borne Images
(2018-05-22)
3D point cloud analysis of imagery collected by unmanned aerial vehicles (UAV) has been shown to be a valuable tool for estimation of crop phenotypic traits, such as plant height, in several species. Spatial information about these phenotypic traits can be used to derive information about other important crop characteristics, like fresh biomass yield, which could not be derived directly from the point clouds. Previous approaches have often only considered single date measurements using a single point cloud derived ...
Aufsatz
Roots of symptom-free leguminous cover crop and living mulch species harbor diverse Fusarium communities that show highly variable aggressiveness on pea (Pisum sativum)
(2018-02-14)
Leguminous cover crop and living mulch species show not only great potential for providing multiple beneficial services to agro-ecosystems, but may also present pathological risks for other crops in rotations through shared pathogens, especially those of the genus Fusarium. Disease severity on roots of subterranean clover, white clover, winter and summer vetch grown as cover crop and living mulch species across five European sites as well as the frequency, distribution and aggressiveness to pea of Fusarium spp. ...
Aufsatz
Aqueous Leaching Prior to Dewatering Improves the Quality of Solid Fuels from Grasslands
(2018-04-04)
Renewable energies are necessary to reduce greenhouse gas emissions in energy production, and biomass plays a dominant role in the renewable energy sector. Combustion of biomass constitutes an efficient conversion technique, but is hindered by harmful elements which are frequently contained in residual grassland biomass. We investigated the effect of leaching on solid fuel quality with three independent experiments including the following treatments: (1) with or without leaching, (2) with leaching at various water ...
Dissertation
Effect of different types of soil conditioners (plant-derived composts and animal manure) and application methods on quantitative and qualitative characteristics of tomatoes and selected soil parameters
(2018)
World population prospect has increased the need for food production, therefore ensuring the sustainable production of food has been of interest to researchers of agricultural sciences, as well as politicians, due to high demands by consumers in various countries in the world.
In this dissertation, we have investigated the effect of different types of composts, from residual biomass (household compost (HC), Spent mushroom compost (SMC) and Vermicompost (VC)), on different characteristics of plant and soil in organic ...
Dissertation
Development of Maize Post-harvest Loss Reduction Mechanism Owing to Mycotoxin-producing Fungi Contamination Along Agro-ecology and Supply Chain in Southwestern Ethiopia
(2018)
Kurzfassung In vielen ländlichen Gebieten Äthiopiens ist Mais mit seinem hohen Kalorienwert das vorherrschende Grundnahrungsmittel und zudem für die Landwirte eine wichtige Einkommensquelle. Hohe Nachernteverluste sind jedoch ein landesweites Problem, allerdings gibt es hierzu kaum belastbare Daten, die die Ausarbeitung einer Reduzierungsstrategie erlauben würden. Insbesondere gilt das für die Verluste durch Pilzbefall und die daraus folgende Mykotoxinbelastung, wie dies häufig in den heißen und feuchten Klimabereichen ...
Aufsatz
The ‘forma specialis’ issue in Fusarium: A case study in Fusarium solani f. sp. pisi
(2018-01-19)
The Fusarium solani species complex (FSSC) has been studied intensively but its association with legumes, particularly under European agro-climatic conditions, is still poorly understood. In the present study, we investigated phylogenetic relationships and aggressiveness of 79 isolates of the FSSC collected from pea, subterranean clover, white clover and winter vetch grown under diverse agro-climatic and soil conditions within Temperate and Mediterranean Europe. The isolates were characterized by sequencing tef1 and ...
Dissertation
Untersuchung und Darstellung der Qualitätsveränderung von Agrarprodukten während der Trocknung
(2018)
Das Ziel der Arbeit war es optimale Trocknungsprozesse für verschiedene Agrarprodukte zu finden. Dazu wurden die Qualitätskriterien frischer und getrockneter Agrarprodukte analysiert und die Veränderungen durch die unterschiedlichen Trocknungsparameter, wie Luftgeschwindigkeit, Taupunkttemperatur, Trocknungstemperatur und –zeit dargestellt. In einer Literaturrecherche wurden sowohl die Faktoren für die Nachernteverluste und deren Höhe in Industrie- sowie Schwellen- und Entwicklungsländer untersucht. Zudem sind die ...
Dissertation
Use of organic wastes of Agave processing for bioenergy production
(2018)
Der organische Reststoff, welcher bei der Verarbeitung der Agave S. anfällt (Mezcal-Schlempe), ist aufgrund der hohen Anteile an organischer Substanz, anorganischen Salzen und anderer Inhaltstoffe ein umweltschädlicher Rückstand, der nicht ohne Vorbehandlung in Gewässer oder Böden gelangen darf, ggf. aber für die Bioenergieerzeugung genutzt werden könnte. Im Rahmen dieser Arbeit wurde daher unter Laborbedingungen die Eignung dafür durch drei Versuche zur anaeroben Vergärung und zwei zu mikrobiellen Brennstoffzellen ...