E-Dissertationen: Browsing E-Dissertationen by Title
Now showing items 464-483 of 1180
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Factorial Approach to Determining Energy and Protein Requirements of Gilthead seabream (Sparus aurata) for Optimal Efficiency of Production
(2004)Requirements for dietary energy and protein in growing fish can be quantified using the factorial approach which assumes that the requirement is the sum of growth and maintenance. Thus dietary intake can be calculated using ... -
Fahrspur- und Routenplanung für teilautonome, GNSS-gestützte Landmaschinen
(2016-02-19)Die Entwicklungen in der Landwirtschaft sind durch Automatisierung und Informationstechnologie geprägt. Parallelfahrsysteme sind zu einem wichtigen Werkzeug geworden, um die Maschine mit einer Spurgenauigkeit von wenigen ... -
Farm Animal Welfare: Measurement and Compliance
(2012-07-18)The present study is divided into two main parts. The <i>first</i> main part aims at evaluating the conception of and compliance with legal and voluntary husbandry standards on Austrian and German pig fattening and cattle ... -
Farm-level impacts of policy instruments targeting plant protection products
(2018-09-25)Plant protection is necessary to achieve high yields with high quality. The application of pesticides, however, leads to negative external effects to the environment. Society calls for stricter agri-environmental instruments ... -
Farmer Innovation in Rural Ghana: Determinants, Impacts and Identification
(2015-11-23)Innovation is essential for agricultural and economic development, especially in today’s rapidly changing global environment. While farmers have been recognised as one of the key sources of innovation, many studies on ... -
Farmers' Behavior and Policy Design in the Era of Smart Farming Technology
(2026-01-23)The agricultural sector faces a dual challenge: ensuring food security while simultaneously protecting the environment. Population growth, climate change, and environmental degradation exacerbate this challenge. A promising ... -
Farmland abandonment in Rio de Janeiro State, Brazil: underlying, proximate causes, and predisposing factors
(2025-04-30)Along the RJ-196 road, where imperial palm trees stand near the ruins of old sugar mills and dirty pastures, the landscape tells a story of change: a story of agricultural abandonment. These abandoned sugarcane fields are ... -
Fate of veterinary pharmaceuticals in soil: An experimental and numerical study on the mobility, sorption and transformation of sulfadiazine
(2006)Among other sulfonamides sulfadiazine (SDZ) is a widely used antimicrobial substance in intensive livestock production to prevent and treat diseases. Up to 40 % of the administered sulfonamides are eliminated as microbial ... -
Feldversuche zur Erfassung des Transportverhaltens von gelösten und partikulären Tracern mittels Multitracing-Technik in einem schluffigen Boden
(2003)Die bodenphysikalische Heterogenität in strukturierten Böden und die Niederschlagintensität sind wichtige Faktoren für den gelösten und partikulären Transport durch die ungesättigte Bodenzone in das Grund- oder Oberflächenwasser. ... -
Field-based evidence of root plasticity under abiotic stresses and tillage
(2026-02-18)Modern agriculture faces the dual challenge of increasing food productivity while preserving soil health and biodiversity under a changing climate. Roots are central to this dilemma, as they dictate nutrient uptake, soil ... -
Finding spectral features for the early identification of biotic stress in plants
(2013-07-08)Early detection of biotic stress in plants is vital for precision crop protection, but hard to achieve. Prediction of plant diseases or weeds at an early stage has significant influence on the extent and effectiveness of ... -
Flavonoidgehalt in der Muttermilch nach Intervention mit einem Sojagetränk oder entkoffeiniertem schwarzen Tee
(2012-07-13)Viele in vivo Studien zeigen, dass Flavonoide (Isoflavone und Flavanole) ein breites Wirkspektrum mit einem positiven Einfluss auf diverse Stoffwechselvorgänge besitzen. So können sie zum Beispiel aufgrund ihrer antioxidativen ... -
Flächenentwicklung der Kalkmagerrasen im nordrhein-westfälischen Teil der Eifel seit 1900 und ihr aktueller Zustand
(2015-03-04)In der vorliegenden Arbeit wird die Flächenentwicklung der Kalkmagerrasen der nordrhein-westfälischen Eifel in den letzten 100 Jahren dargestellt. Aktuell kommen im gesamten Untersuchungsraum 549 Kalkmagerrasen mit einer ... -
Fluorescence-based systems for detection of abiotic stresses on horticultural crops
(2016-05-10)The main objective of this thesis was to assess the impact of economically important abiotic stresses on the plant physiology using non-destructive fluorescence indices, and to evaluate the potential use of the sensor ... -
Folate, vitamin B6, and vitamin B12 status in European adolescents: associations with homocysteine as well as communicable and non-communicable factors
(2010-07-06)Adolescence implies important psychological, social, and physiological changes. Apart from the first year of life, both energy and nutrient requirements are greatest during adolescence. To ensure physiological growth during ... -
Food price volatility: the role of stocks and trade
(2015-10-14)After a period of relatively low international food price volatility since the 1970s, prices spiked in 2007/2008 and 2011. These international price changes transmitted to domestic markets where they generate extra volatility. ... -
Food Security Monitoring for Developing Countries in the Age of Big Data
(2020-02-10)Approximately 817 million people are currently estimated to be undernourished and 85 million people across 46 countries are estimated to be in need of food emergency assistance over the course of 2019. Conflict, migration ... -
Food waste reduction concepts for stakeholders in the food supply chain and auxiliary organizations
(2019-09-10)The objective of this thesis was to develop concepts to support the reduction of food waste in the food sector. The concepts are targeted to private companies, such as manufacturing businesses, retailers, and large-scale ... -
Forecasting Tools and Risk Prediction Models for Decision Support in Fruit Production
(2026-01-12)Tree fruit production in Germany is confronted with various risks that affect quality and reduce yields, such as disease infestation or weather events. The occurrence of late spring frosts often leads to cell damage, ... -
Foreign Direct Investment in the Agribusiness Sector
(2011-06-10)Foreign Direct Investment (FDI) has increased strongly since 2003, especially into the agribusiness sector. This development has rarely been analysed in recent literature. Therefore, this thesis aims at analysing different ...
