Search for dissertations about: "Fertilizers"

Showing result 1 - 5 of 36 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 : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Kulturgeografi; Human Geography; 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. Phosphorus recycling from wastewater to agriculture using reactive filter media

    University dissertation from Stockholm : KTH

    Author : Victor Cucarella Cabañas; KTH.; [2007]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; 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

  3. 3. 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]

    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

  4. 4. Micronutrients in cereal crops

    University dissertation from Linköping : Linköpings universitet

    Author : Karin Hamnér; Sveriges lantbruksuniversitet.; [2016]

    Abstract : Seven elements essential for plants are defined as micronutrients: boron (B), copper (Cu), iron (Fe), manganese (Mn), molybdenum (Mo), nickel (Ni) and zinc (Zn). Deficiency of these nutrients can cause yield losses in crops and impaired crop quality. READ MORE

  5. 5. Evaluation of Modern Irrigation Techniques with Brackish Water

    University dissertation from Lund University

    Author : Tarek Selim Aboulila; Lunds universitet.; Lund University.; [2012]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Soil water; Soil Salinity; Drip irrigation; HYDRUS-2D 3D; El-Salam Canal; Egypt.;

    Abstract : Popular Abstract in English Improving irrigation practices and optimal exploitation of available water resources are vital issues facing water scarcity and similar problems in arid and semiarid countries (e.g., Egypt and Tunisia). In these countries, the use of saline and low quality irrigation water (i. READ MORE