Search for dissertations about: "Fertilizers"

Showing result 1 - 5 of 26 swedish dissertations containing the word Fertilizers.

  1. 1. Ecostrategies in theory and practice : Farmer's perspectives on water, nutrients and sustainability in low-resource agriculture in the dry zone of Sri Lanka

    University dissertation from Linköping : Linköpings universitet

    Author : Klas Sandell; Karlstads universitet.; Linköpings universitet.; Linköpings universitet.; [1988]
    Keywords : Social Sciences Social and Economic Geography Human Geography; Samhällsvetenskap Social och ekonomisk geografi Kulturgeografi; Kulturgeografi; Human Geography; Social Sciences Other Social Sciences Social Sciences Interdisciplinary; Samhällsvetenskap Annan samhällsvetenskap Tvärvetenskapliga studier; INTERDISCIPLINARY RESEARCH AREAS; TVÄRVETENSKAPLIGA FORSKNINGSOMRÅDEN; Attitudes towards nature; Alternative development; Carrying capacity; Development strategies; Development theory; Diffusion; Dry zone of Sri Lanka; Ecodevelopment; Ethnoperspective; Fertilizers; Green revolution; Human ecology; Human geography; Low-resource agriculture; Small-scale farming; Sustainable development; Village irrigation.;

    Abstract : PROBLEMThe need for a sustainable man - nature relationship has long been a neglected aspect of development theory. The increasing awareness of this negligence has led to a search for development strategies alternative to conventional industrial growth. READ MORE

  2. 2. Costs of controls on farmers' use of nitrogen : a study applied to Gotland

    University dissertation from Stockholm : Economic Research Institute at the Stockholm School of Economics [Ekonomiska forskningsinstitutet vid Handelshögskolan] (EFI)

    Author : Ing-Marie Andréasson; Handelshögskolan i Stockholm.; [1988]
    Keywords : Social Sciences Economics and Business Economics; Samhällsvetenskap Ekonomi och näringsliv Nationalekonomi; Agriculture; Fertilizers; Pollution control; Costs; Sweden; SOCIAL SCIENCES Business and economics Economics; SAMHÄLLSVETENSKAP Ekonomi Nationalekonomi;

    Abstract : The purpose of this thesis is to compare policy instruments with respect to cost efficiency, income distribution effects, technological change and violation incentives. The policy instruments under study are quota, charge and permit market system. READ MORE

  3. 3. Essays in the Latin American fertilizer industry

    University dissertation from Stockholm : Economic Research Institute, Stockholm School of Economics [Ekonomiska forskningsinstitutet vid Handelshögsk.] (EFI)

    Author : Albert Patrickson; Handelshögskolan i Stockholm.; [1990]
    Keywords : Social Sciences Economics and Business Economics; Samhällsvetenskap Ekonomi och näringsliv Nationalekonomi; Fertilizers; Deliberate strategies; Emergent Strategies; Industrial location; Oil crises; Mexico; Chile; SOCIAL SCIENCES Business and economics Human geography; economic geography; SAMHÄLLSVETENSKAP Ekonomi Kulturgeografi; ekonomisk geografi; SOCIAL SCIENCES Business and economics Economics; SAMHÄLLSVETENSKAP Ekonomi Nationalekonomi;

    Abstract : .... READ MORE

  4. 4. Phosphorus recycling from wastewater to agriculture using reactive filter media

    University dissertation from Stockholm : KTH

    Author : Victor Cucarella Cabañas; KTH.; [2007]
    Keywords : Natural Sciences Earth and Related Environmental Sciences Oceanography; Hydrology; Water Resources; Naturvetenskap Geovetenskap och miljövetenskap Oceanografi; hydrologi; vattenresurser; Filtra P; phosphorus; Polonite; recycling; sorption; wollastonite; INTERDISCIPLINARY RESEARCH AREAS Water in nature and society; TVÄRVETENSKAPLIGA FORSKNINGSOMRÅDEN Vatten i natur och samhälle;

    Abstract : This thesis focused on testing the suitability of reactive filter media used for phosphorus (P) removal from wastewater as fertilizers, thus recycling P to agriculture. The work compared the P sorption capacity of several materials in order to assess their suitability as a source of P for plants. READ MORE

  5. 5. Traditional lowland rice agriculture in Sri Lanka : Nitrogen cycling and options for biofertilizers

    University dissertation from Linköping : Linköpings universitet

    Author : Ola Palm; Linköpings universitet.; Linköpings universitet.; [1988]
    Keywords : Social Sciences Other Social Sciences Social Sciences Interdisciplinary; Samhällsvetenskap Annan samhällsvetenskap Tvärvetenskapliga studier; INTERDISCIPLINARY RESEARCH AREAS; TVÄRVETENSKAPLIGA FORSKNINGSOMRÅDEN;

    Abstract : The aim of this thesis has been: to study the dynamics of soil organic-matter, with regard to nitrogen in a traditional lowland-rice agricultural system; to consider options for and nitrogen cycling of biofertilizers, especially the green-manure legume Sesbania sesban; to discuss fertilizer sources and management constraints as parts of a sustainable agricultural development; and to discnss the methodological problems of controlled experiments vs. investigations in farmer's fields. READ MORE