Search for dissertations about: "fertilizer use"
Showing result 1 - 5 of 46 swedish dissertations containing the words fertilizer use.
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1. Essays on Shocks, Welfare, and Poverty Dynamics: Microeconometric Evidence from Ethiopia
Abstract : Five self-contained papers constitute this thesis. Paper 1: Does fertilizer use respond to rainfall variability? Panel data evidence from urban Ethiopia In this article, we use farmers’ actual experiences with changes in rainfall levels and their responses to these changes to assess whether patterns of fertilizer use are responsive to changes in rainfall patterns. READ MORE
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2. Nitrogen land-sea fluxes in the Baltic Sea catchment : Empirical relationships and budgets
Abstract : In this thesis empirical relationships and modeling tools are used to describe the relationship between human activities and meso- and large scale riverine N fluxes from land to sea. On a large scale Paper I showed that by only having knowledge about human population size and runoff one can estimate the riverine export of DIN (r2= 0.76). READ MORE
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3. Phosphorus : flows to swedish food chain, fertilizer value, effect on mycorrhiza and environmental Impact of Reuse
Abstract : Phosphorus is an essential element for plants, animals and humans and is also a scarce resource as a raw material for fertilizer production. The flows of phosphorus to and from Swedish agriculture and food chain was investigated with a material flow analysis (MFA). READ MORE
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4. European ecosystems on a changing planet : Integrating climate change and land-use intensity data
Abstract : Dynamic global vegetation models are mathematical models that provide a bottom-up description of plant communities. They explicitly model physiological and population-level processes such as growth, photosynthesis, carbon allocation, regeneration and mortality. READ MORE
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5. Risk, Time and Land Management under Market Imperfections: Applications to Ethiopia
Abstract : This Ph.D. thesis addresses both theoretical and empirical issues pertaining to land management decisions of farm households in developing countries working under an imperfect market and institutional setting (with case studies from Ethiopia). READ MORE