Search for dissertations about: "fumigation"
Showing result 1 - 5 of 6 swedish dissertations containing the word fumigation.
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1. Control Structures for Low-Emission Combustion in Multi-Cylinder Engines
Abstract : Traditionally, heavy-duty diesel engines have high efficiencies but also high emissions of NOx and soot particles. New engine concepts show the potential to retain diesel-like efficiencies while reducing emissions by forming a completely or partially homogeneous mixture of fuel and air prior to ignition through compression. READ MORE
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2. Impact of Brassicaceae cover crops on pea root rot (Aphanomyces euteiches) in subsequent peas
Abstract : The soil-borne pathogen Aphanomyces euteiches Drechs is among the greatest threats to pea production world-wide. This pathogen can persist in soil for many years without a host plant and is very difficult to control due to its long-lived oospores and to environmental restrictions on fungicide application. READ MORE
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3. Studies in pest control for cultural property
Abstract : This thesis considers discrete problems of protecting cultural property from pests and examines some of the solutions. Recent decades have seen a large change in how fumigants and pesticides are used in collections of cultural property. READ MORE
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4. Towards an integrated ecology through mechanistic modelling of ecosystem structure and functioning
Abstract : Plant physiology, population dynamics and the structure and functioning of ecosystems are closely interrelated. However, these processes are often investigated independently within different subdisciplines of ecology. READ MORE
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5. Factors Affecting Rates of Change in Soil Bacterial Communities
Abstract : The soil bacterial community is under the constant influence of its environment. Changing any of the factors affecting the bacterial community will induce a selection pressure which, with time, will change the community. In this work the effect of changing the temperature or pH on the soil bacterial community was studied. READ MORE