Browsing Fakultät für Agrarwissenschaften (GFA) by Title
Now showing items 816-835 of 946
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The effect of grassland botanical composition and (co-) grazing cattle and sheep on herbage production and sward nutrient utilisation
(2011-09-13)Plant diversity in grassland ecosystems has recently gained increasing interest, as plant diversity has often been found to be related to improved ecosystem functioning. So far, studies of ... -
The effect of nitrogen and potassium supply on suberization in maize roots
(2025-10-02)Nutrient radial transport in plant roots involves the movement of solutes across multiple cell layers, including the rhizodermis, exodermis, cortex, endodermis, and stele. This process occurs via apoplastic, symplastic, ... -
The Effectiveness of Agricultural Extension Programs in the Desert Areas of Nubaria, Egypt: A Case Study of a Sugar Beet Program
(2012-02-22)The Egyptian government has applied extensive programs for land reclamation as a strategy to meet rapidly growing demand for food. Public extension services have applied many programs to ... -
The Effects of Marketing Contracts and Resource-providing Contracts: Comparisons in the Small Farm Sector in Ghana
(2020-08-12)Agri-food systems in developing countries are undergoing a rapid transformation, characterized by modernizing supply chains and the rising importance of highervalue products. Participation of smallholder farmers in the ... -
The effects of the root endophytic fungus Acremonium strictum on plant-herbivore interactions
(2010-07-23)The widespread occurence of endophytic fungi in virtually all plant species has prompted an increasing number of investigations into the ecological significance of these cryptic microorganisms ... -
The Essays on Competitiveness, Efficiency, and Productivity: Methodological Issues and Applications
(2010-04-14)This PhD thesis consists of six papers that thematically could be divided into two groups. The first group comprises four papers that deal with assessing and explaining performance of ... -
The food system transformation in developing countries: opportunities and challenges for smallholder farmers
(2010-07-15)In many developing countries, agricultural and food systems are undergoing a major transformation towards high-value, modern supply chains. In export markets, stan-dards and certification ... -
The Impact of Adaptive Performance on Holstein Breeding in Northern Thailand
(2003-04-07)Actual production and breeding status of a Northern Thai dairy herd (Holstein) was investigated in order to identify data basis for developing sustainable breeding concept for the local ... -
The impact of agri-environmental policy and infrastructure on wildlife and land prices
(2018-12-14)The thesis contains three essays in the field of environmental policy. In the first paper, we study the relationship between the agri-environmental payments for farmers and wildlife. The effects of EU agri-environmental ... -
The Implications of ASEAN FreeTrade Area (AFTA) on Agricultural Trade (A recursive dynamic General Equilibrium Model)
(2004-06-23)The establishment of the AFTA raised concerns related to the inclusion of raw agricultural products into the agreement. This agreement would have negative impacts on welfare of thousand ... -
The importance of reproductive traits and pollinators for increased use of heterosis in faba bean (Vicia faba L.)
(2024-05-16)The grain legume faba bean (Vicia faba L.) is grown on all continents for its protein-rich seeds, which are used for human and animal nutrition. In recent years, domestic production of protein crops has been supported by ... -
The induce resistance against fire blight by the plant activator BTH (BION) or extract of Hedera helix leaves and studies on the mode of action
(2001-06-20)In the present study the plant activator BTH (= benzothiadiazole) (BION ® ) and an extract from leaves of Hedera helix were assayed on resistance inducing effects against fire blight caused ... -
The influence of drought stress on yield and forage quality of grasslands differing in functional composition
(2019-03-04)The present study aimed at unraveling the interacting influences of functional group composition, drought stress and N fertilization on sward productivity and forage quality in old semi-natural grassland in Northern Germany. ... -
The last mile problem: Insights from Cambodian smallholder farmers
(2022-07-08)While the progress over recent decades in combating poverty is remarkable and has changed the economic status of many individuals around the globe, the quest for poverty reduction is ongoing. Those still enrooted in poverty ... -
The meat science perspective of spirulina (Arthrospira platensis) and black soldier fly larvae (Hermetia illucens) as alternative protein feeds in broiler and swine production
(2020-09-29)Soybean meal has been extensively researched and is currently the standard protein feed used in Western European pork and poultry production. However, in recent years concerns have arisen regarding the production of soybeans. ... -
The nutrition transition, supermarkets, and nutritional outcomes in developing countries
(2014-07-29)Many developing countries are currently undergoing a rapid nutrition transition. This transition is characterized by changes in dietary habits towards more energy-dense, often processed foods with high fat and sugar contents, ... -
The potential of virtual fencing for cattle and goats with regard to learning behaviour and animal welfare
(2025-10-16)The modern fencing technology ‘virtual fencing’ is becoming increasingly popular worldwide because it promises to make farmers’ work easier. Instead of actual physical fences, the virtual fence lines are invisible to the ... -
The Relationship between Biodiversity and Productivity in Permanent Grasslands and in Ley System
(2008-08-28)To investigate the effect of plant diversity on productivity, two experiments have been conducted. The first experiments aimed to study the biodiversity-productivity relationship in permanent ... -
The Role of Extension and Sustainable Soil Management in Smallholder Agriculture - Evidence from Ethiopia
(2020-09-24)Rising demand for agricultural commodities coupled with population growth, climate change, declining soil fertility, environmental degradation and rural poverty in the develop-ing world call for strategies to sustainably ... -
The role of glutathione transferases in herbicide detoxification - a genome-wide study on flufenacet resistant black-grass
(2024-04-19)Resistance of black-grass (Alopecurus myosuroides Huds.) to post-emergent herbicides is already widespread in Europe. In addition to that, resistance to pre-emergent herbicides is evolving such as Group 15 herbicides, among ...