Sökning: "orthophosphate"

Visar resultat 1 - 5 av 8 uppsatser innehållade ordet orthophosphate.

  1. 1. The role of agricultural drainage in controlling the effectiveness of two-stage ditches in Sweden

    Master-uppsats, SLU/Dept. of Soil and Environment

    Författare :Neerajaa Nagarajan; [2021]
    Nyckelord :Subsurface drainage; Absorbance flourescence spectroscopy; Suspended sediments; NO3N; NH4N; PO4P; TP values; DOM indices;

    Sammanfattning : Increased agricultural activities are causing eutrophication in downstream water bodies. To mitigate nutrient leaching from cropland, various in-field and edge-of-field practices have been implemented. LÄS MER

  3. 2. Phosphorus speciation across elevation and vegetation in soils of the subarctic tundra : A solution 31P NMR approach

    Master-uppsats, Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

    Författare :Johannes Krohn; [2017]
    Nyckelord :Climate warming; arctic ecosystems; tundra; phosphorus; Solution 31P NMR;

    Sammanfattning : In tundra, phosphorus (P) is an important macronutrient for plants and microorganisms. A major fraction of P exists as organic compounds in the topsoil which can be mineralized to bioavailable inorganic P. LÄS MER

  4. 3. Organic matter properties and their relation to phosphorus and nitrogen concentrations in Swedish agricultural streams

    Master-uppsats, SLU/Dept. of Soil and Environment

    Författare :Betty Ehnvall; [2017]
    Nyckelord :dissolved organic matter; excitation-emission fluorescence spectroscopy; absorbance spectroscopy; eutrophication; biogeochemistry; absorbance index; fluorescence index;

    Sammanfattning : Many agricultural streams in Sweden exhibit high concentrations of nitrogen, phosphorus, suspended sediments and dissolved organic matter (DOM). Together these substances cause eutrophication in streams, rivers and eventually the Baltic Sea. The interactions between different fractions of DOM and nutrients are not very well understood. LÄS MER

  5. 4. Polyphosphate : the impact of polyphosphate on growth and nutrient uptake of Pelargonium x hortorum 'Mårbacka' and Petunia x hybrida 'Origami Watermelon'

    Master-uppsats, SLU/Dept. of Plant Breeding (from 130101)

    Författare :Rebecka Kullberg; [2016]
    Nyckelord :hydrolysis; orthophosphate; Pelargonium; Petunia; phosphate; plant nutrition; polyphosphate; root growth; soil chemistry;

    Sammanfattning : Phosphorus (P) is an essential macronutrient for plants. For example, it is required for the transfer of energy, in the photosynthesis and as a component of the phospholipids in the cell membrane. Phosphorus can exist in several different forms, depending on the soil's pH-value. LÄS MER

  7. 5. Assessment of nutrient loading in lake Ringsjön from the catchment of Hörbyån Creek in Southern Sweden.

    Master-uppsats, KTH/Mark- och vattenteknik

    Författare :Durgesh Kumar Singh; [2013]
    Nyckelord :Eutrophication; Nutrient loading; HEC-RAS and Water Quality;

    Sammanfattning : Lake Ringsjön, located in south of Sweden, has been subject of eutrophication since 1950s and received several restoration efforts. Latest restoration effort, “Project Ringsjön”, was proposed in 2003 to improve lake condition against eutrophication by reducing nutrient concentration. LÄS MER