Sökning: "ley crops"
Visar resultat 1 - 5 av 8 avhandlingar innehållade orden ley crops.
1. The Technology and Economy of Farm-Scale, High-Solids Anaerobic Digestion of Plant Biomass
Sammanfattning : Anaerobic digestion is a microbially mediated process occurring in nature in the absence of oxygen and other non-carbonaceous electron acceptors. The majority of the carbon of the organic matter degraded in the process is transformed into carbon dioxide and methane. LÄS MER
2. Modeling the Potential for Carbon Removal in Agriculture: Integrating Farmer Perspectives
Sammanfattning : The overarching aim of this thesis is to provide insights into the dynamic processes governing SOC stocks and to identify viable paths for agricultural systems to contribute to climate change mitigation. By integrating current scientific knowledge of carbon sequestration in agriculture with feasible agricultural applications, this work proposes local realistic strategies for enhancing soil organic carbon (SOC) and presents a quantitative assessment of their potential for CO2 removal. LÄS MER
3. Interception and storage of wet deposited radionuclides in crops : field experiments and modelling
Sammanfattning : The emission of radionuclides into the atmosphere from various sources, such as nuclear power plant accidents and nuclear bomb explosions, can result in the interception and uptake of radionuclides by crops in the agricultural ecosystem. These radionuclides e.g. LÄS MER
4. Nutrient economy in annual and perennial crops : comparisons between and within crop species in a sustainability context
Sammanfattning : Nitrogen use efficiency (NUE) of agricultural crops is related to crop nitrogen (N) uptake and thereby the amount of N that is removed from agro-ecosystems through crop harvest. As the N removal through harvest is linked to the fertilization requirements and the risk of N leaching, the crop NUE is an important aspect of sustainability in agriculture. LÄS MER
5. Plant-based biogas production for improved nutrient management of beetroot in stockless organic farming
Sammanfattning : Transition from a nutrient management system based on green manure (GrM system) to one based on biodigested plant material produced within the crop rotation (BG system) was investigated in crop sequences including clover-grass, beetroot and cereals. The overall hypothesis was that transition would improve nitrogen (N) availability. LÄS MER