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Visar resultat 11 - 15 av 67 avhandlingar som matchar ovanstående sökkriterier.
11. The fate and ash transformations of phosphorus in combustion of biomass and sewage sludge
Sammanfattning : The combustion of phosphorus (P)-rich biomass has a significant potential to increase the stock of biomass resources available for renewable heat and power production. In addition, the P-rich ashes have the potential as a fertilizer and could reduce the need for non-renewable P resources in agriculture. LÄS MER
12. Spektrum och termanalys av fosfor I : [The spectrum and term analysis of phosporus I]
Sammanfattning : [abstract missing].... LÄS MER
13. Soluble and Plant Available Phosphorus in Acid Soils
Sammanfattning : The P availability and solubility differ between soils and plants seem to have different ways of utilising the P present. The many P fractions present in soil interact and are closely related to another and transformations may easily occur. Due to this more P than the soluble fraction is available to plants. LÄS MER
14. Soil phosphorus – a multidimensional resource that plays an important role for grassland plant species richness
Sammanfattning : The semi-natural grassland habitats contain an important part of the plant diversity in Europe. Changes in farming practices have lead to drastic decreases in plant species richness. The aim of the present thesis is to contribute to the knowledge about mechanisms governing the plant species richness in grasslands with emphasis on soil nutrients. LÄS MER
15. The Ecophysiology of Arbuscular Mycorrhizal Fungi: Phosphatase Activity Associated with Extraradical and Intraradical Mycelium
Sammanfattning : Arbuscular mycorrhizal (AM) fungi colonise a wide range of plant species and are especially common in soils with a relatively high pH, where phosphorus availability is a limiting factor for primary production. The aim of this thesis was to study the ecophysiology of arbuscular mycorrhizal (AM) fungi when exposed to different environments. LÄS MER