Essays about: "Pseudotsuga"
Showing result 1 - 5 of 7 essays containing the word Pseudotsuga.
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1. The effect of heat and UVC treatments on seed germination and seed-borne fungi of Pinus sylvestris, Pinus contorta and Pseudotsuga menziesii used in Swedish nurseries
University essay from SLU/Southern Swedish Forest Research CentreAbstract : Pathogen free seeds are critical to produce healthy plants for forest regeneration. However, recent studies have shown that tree seed carry a high diversity of fungi including known and unknown pathogens. READ MORE
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2. Comparison of native and introduced tree species in a range from low to high productivity sites in southern Sweden
University essay from SLU/Southern Swedish Forest Research CentreAbstract : The dilemma of climate change, biodiversity conservation and economic efficiency in nowadays forestry leads us to search for the new solutions. Introduction of non-native tree species becomes a more frequently explored field as a solution for the future problems. READ MORE
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3. Physiological responses to drought in healthy and stressed trees : a comparison of four species in Oregon, USA
University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskapAbstract : Four tree species in Oregon (USA) were studied to examine physiological and structural responses to drought stress: ponderosa pine (Pinus ponderosa) and western juniper (Juniperus occidentalis) in a semi-arid ecoregion, and Douglas-fir (Pseudotsuga menziesii) and white oak (Quercus garryana) in a mesic coastal ecoregion. This investigation compared the response of paired healthy and stressed (. READ MORE
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4. Etablering och tillväxt av Douglasgran i ett proveniensförsök i södra Sverige
University essay from SLU/Dept. of Forest Ecology and ManagementAbstract : I denna studie utvärderades ett proveniensförsök med douglasgran som anlades 2010 på Tönnersjöhedens försökspark, SLU i samarbete med Södra Skog. Syftet var att utreda skadebilden, tillväxten och avgång efter tre tillväxtsäsonger för 7 olika provenienser av Douglasgran, och genom statistiska analyser peka på skillnader i mellan kust-och inlandsprovenienser. READ MORE
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5. The growth dynamics of Douglas fir in Sweden and Finland : application of the 3-PG stand growth model
University essay from SLU/Dept. of Forest Ecology and ManagementAbstract : Little research has yet been conducted on the growth of Douglas fir (Pseudotsuga menziesii (Mirbel) Franco var. menziesii) in Sweden albeit its potentials as a commercial tree species in the future. Therefore, this study aimed at capturing currently available field and reference data for the purpose of evaluation. READ MORE