Search for dissertations about: "Tillage"

Showing result 1 - 5 of 12 swedish dissertations containing the word Tillage.

  1. 1. Tillage practices and their impact on soil organic carbon and the microbial community

    University dissertation from Lund University, Faculty of Science, Centre for Environmental and Climate research (CEC) & Department of Biology

    Author : Sofia Hydbom; [2017-11]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Tillage; Agriculture; Long-term field experiment; Microorganism; Clayey soil; Soil organic carbon; Farmer; Sweden;

    Abstract : Soil microorganisms are important for climate regulation as well as for plant nutrition. In agricultural soils the microorganisms are affected by management choices, like which type of tillage that is used. READ MORE

  2. 2. Tillage effects on soil respiration in Swedish arable soils

    University dissertation from ; Dept. of Soil and Environment, Swedish University of Agricultural Sciences

    Author : Veera Kainiemi; Sveriges lantbruksuniversitet.; [2014]
    Keywords : LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Abstract : The amount of carbon (C) present in soil is greater than the sum of C present in terrestrial vegetation and the atmosphere combined. Small changes in soils can therefore affect atmospheric CO₂ levels and ultimately the global climate. Soil C is also one of the main soil properties involved in several soil functions critical for soil productivity. READ MORE

  3. 3. Soil tillage influences on soil mineral nitrogen and nitrate leaching in Swedish arable soils

    University dissertation from ; Department of Soil and Environment, Swedish University of Agricultural Sciences

    Author : Åsa Myrbeck; Sveriges lantbruksuniversitet.; [2014]
    Keywords : LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Abstract : Leaching of nitrogen (N) is an unwanted effect of agriculture practices which contributes to eutrophication of surface waters. This thesis examined how soil tillage practices affect leaching losses of N from arable fields. READ MORE

  4. 4. Resource efficient control of Elymus repens

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

    Author : Björn Ringselle; Sveriges lantbruksuniversitet.; [2015]
    Keywords : LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Abstract : Elymus repens is a perennial grass weed that causes great yield losses in a variety of crops in the southern and northern temperate zones. Primary control methods for E. repens are herbicides or intensive tillage, both of which have a number of negative side-effects, e.g. READ MORE

  5. 5. Traps and transformations : Exploring the potential of water system innovations in dryland sub-Saharan Africa

    University dissertation from Stockholm : Department of Systems Ecology, Stockholm University

    Author : Elin Enfors; Line Gordon; Christian Valentin; [2009]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; smallholder farming; water system innovations; agricultural droughts; multi-functional landscapes; development trajectories; uncertainty; NATURAL SCIENCES; NATURVETENSKAP; Natural Resources Management; naturresurshushållning;

    Abstract : In semi-arid and dry sub-humid sub-Saharan Africa (SSA), high poverty levels and a heavy reliance on small-scale rainfed agriculture make rural livelihoods difficult. Upgrading current farming systems, in a way that safeguards productivity beyond field-scale, is urgent. READ MORE