Search for dissertations about: "cropping"

Showing result 1 - 5 of 23 swedish dissertations containing the word cropping.

  1. 1. Land use dynamics in the face of population increase. A study in the districts of Gatsibo and Nyagatare, Eastern Province, Rwanda

    University dissertation from Göteborg : University of Gothenburg

    Author : Theophile NIYONZIMA; Göteborgs universitet.; Gothenburg University.; [2009]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; land use dynamics; land cover changes; population increase; cropping; livestock; political ecology; Rwanda;

    Abstract : This thesis is about land use dynamics in areas undergoing population increase. The study was undertaken to clarify how the increasing population interacted with their physical environment through farming in Eastern Province, Rwanda. READ MORE

  2. 2. Dynamics of root microorganisms in closed hydroponic cropping systems

    University dissertation from ; Department of Biosystems and Technology, Swedish University of Agricultural Sciences

    Author : Anna Karin Rosberg; Sveriges lantbruksuniversitet.; [2014]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Abstract : Greenhouse production of vegetables in closed hydroponic cropping systems is a resource-efficient technique for the production of high-quality produce with a high yield per unit area. While this type of cropping system allows savings in terms of water and nutrient use, the recirculation of water increases the risk of pathogen dispersal. READ MORE

  3. 3. Recycling Filter Substrates used for Phosphorus Removal from Wastewater as Soil Amendments

    University dissertation from Stockholm : KTH

    Author : Victor Cucarella Cabañas; KTH.; [2009]
    Keywords : LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Compact filter; Filtra P; Phosphorus recycling; Polonite; Soil amendment; Sorption isotherms; FORESTRY; AGRICULTURAL SCIENCES and LANDSCAPE PLANNING Soil science; SKOGS- och JORDBRUKSVETENSKAP samt LANDSKAPSPLANERING Markvetenskap; NATURAL SCIENCES Chemistry Inorganic chemistry Solution chemistry; NATURVETENSKAP Kemi Oorganisk kemi Lösningskemi; FORESTRY; AGRICULTURAL SCIENCES and LANDSCAPE PLANNING Area technology Agricultural engineering; SKOGS- och JORDBRUKSVETENSKAP samt LANDSKAPSPLANERING Areell teknik Jordbruksteknik; TECHNOLOGY Civil engineering and architecture Water engineering; TEKNIKVETENSKAP Samhällsbyggnadsteknik och arkitektur Vattenteknik; NATURAL SCIENCES Chemistry Environmental chemistry; NATURVETENSKAP Kemi Miljökemi;

    Abstract : This thesis studied the viability of recycling filter substrates as soil amendments after being used in on-site systems for phosphorus (P) removal from wastewater. Focus was put on the materials Filtra P and Polonite, which are commercial products used in compact filters in Sweden. READ MORE

  4. 4. Diversity of wheat phyllosphere fungi in different agricultural production systems : with special reference to Fusarium

    University dissertation from ; Department of Crop Production Ecology, Swedish University of Agricultural Sciences

    Author : Ida Karlsson; Sveriges lantbruksuniversitet.; [2015]
    Keywords : LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : Fusarium head blight (FHB) is a disease affecting cereals world-wide caused by Fusarium fungi. The disease is of great economic importance especially since it is associated with contamination by harmful mycotoxins produced by Fusarium spp. READ MORE

  5. 5. Agroforestry systems with trees for biomass production in western Kenya

    University dissertation from ; Department of Forest Ecology and Management, Swedish University of Agricultural Sciences

    Author : Hans Sjögren; Sveriges lantbruksuniversitet.; [2015]
    Keywords : LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Abstract : Low agricultural production and a decline in fuelwood resources are serious constraints for subsistence smallholder farmers in western Kenya in the sub-Saharan African region. Furthermore, low soil fertility and general environmental degradation has contributed to the build-up of the parasitic weed Striga hermonthica. READ MORE