Sökning: "leys"

Visar resultat 1 - 5 av 26 uppsatser innehållade ordet leys.

  1. 1. Does irrigation data matter in life cycle assessments?

    Kandidat-uppsats, Lunds universitet/Centrum för miljö- och klimatvetenskap (CEC)

    Författare :Olof Andersson; [2023]
    Nyckelord :Agent-Based Life cycle assessment; Arable grass rotation; Biofuel; Irrigation; Sensitivity analysis; Water footprint; Earth and Environmental Sciences;

    Sammanfattning : Biofuels are seen as a key substitute for fossil fuels and an essential tool for mitigating climate change. A sensitivity analysis was conducted on the AB-LCA (agent-based life cycle assessment) made by Raül López i Losada and his research team. LÄS MER

  3. 2. Trade-induced Environmental Impacts Connected to a Policy Promoting Agricultural Biofuels in Sweden; A sensitivity analysis on an Agent-based Life Cycle Assessment

    Kandidat-uppsats, Lunds universitet/Centrum för miljö- och klimatvetenskap (CEC)

    Författare :Fanny Elfgren; [2023]
    Nyckelord :AB-LCA; Life Cycle Assessment; Energy crops; Trade; Import; Biofuel; Sensitivity Analysis; Earth and Environmental Sciences;

    Sammanfattning : The demand for biofuels is increasing as a result of increased climate mitigation ambitions aiming to replace the use of fossil fuels. To meet the increasing demand, energy crops grown on agricultural land used to produce biofuels is getting more and more attention. LÄS MER

  4. 3. Optimizing nitrogen fertilization in ley : Evaluating the usage of N-sensor and other tools for optimized nitrogen fertilization

    Uppsats för yrkesexamina på avancerad nivå, SLU/Dept. of Soil and Environment

    Författare :Johan Johnsson; [2023]
    Nyckelord :nitrogen efficiency; optimized fertilization; SN value; unfertilized area; Yara N-sensor;

    Sammanfattning : Nitrogen is an essential nutrient for plant growth. It has several functions in the plant and a lack of nitrogen can cause severe yield losses. LÄS MER

  5. 4. Combining GHG Emissions and Soil Carbon Changes as a Single Metric to Evaluate Agricultural Policy Promoting Biomass for Biofuels

    Master-uppsats, Lunds universitet/Miljövetenskaplig utbildning; Lunds universitet/Centrum för miljö- och klimatvetenskap (CEC)

    Författare :Malin Lane; [2022]
    Nyckelord :Gräsvallar; klimatpåverkan; kolinlagring; jordbruk; biomassa; biobränslen.; Earth and Environmental Sciences;

    Sammanfattning : Incorporating a multi-year grass ley into an arable crop rotation can increase soil organic carbon stocks, reduce carbon emissions and provide feedstock for biogas. This thesis set out to study how a policy promoting agricultural biomass for biogas impacts GHG emissions and carbon sequestration on a regional level over a temporal scale of 20 years. LÄS MER

  7. 5. Long-term effects of cropping system on red clover proportion and crude protein concentration in mixed leys

    Master-uppsats, SLU/Dept. of Crop Production Ecology

    Författare :Sanna Bergqvist; [2021]
    Nyckelord :red clover; Trifolium pratense L; persistence; ley age; Sweden; crop rotation; harvest;

    Sammanfattning : Red clover is an important crop in Sweden, being the most cultivated forage legume in the country. It has a high crude protein concentration and fast establishment, which makes it a welcome addition to a ley mixture. However, red clover is not persistent and generally little remains in the third harvest year. LÄS MER