Essays about: "pine weevil"
Showing result 16 - 20 of 22 essays containing the words pine weevil.
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16. Methyl salicylate production by the fungus Ophiostoma pluriannulatum isolated from Pine Weevil frass
University essay from KTH/Skolan för kemivetenskap (CHE)Abstract : One great issue of reforestation is the infestation of pest insects. The pine weevil (Hylobius abietis L.) is one of the economically most important pest insects in Europe and Asia. When insects feed on the trees the plants emit compounds that repel the insects. READ MORE
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17. Angrepp av snytbagge och svart granbastborre i Norrland : skadeläget på SCA's marker en vegetationsperiod efter plantering
University essay from SLU/Dept. of Forest Ecology and ManagementAbstract : Snytbagge (Hylobius abietis L.) och svart granbastborre (Hylastes cunicularius L.) är två allvarliga skadegörare i skogsplanteringar. READ MORE
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18. Markberedningens, planteringspunktens och behållardjupets inflytande på granminiplantors etablering i fält
University essay from SLU/School for Forest ManagementAbstract : A new type of forest tree seedling, called mini seedling, has been developed by the University of Dalarna in Garpenberg, Sweden. Compared to traditional containerized seedlings that are grown for 1 – 2 years, mini seedlings are grown for only 10 weeks. READ MORE
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19. Överlevnad och tillväxt för nyplantersade barrots- och täckrotsplantor : en studie av 42 bestånd i södra Sverige
University essay from SLU/Southern Swedish Forest Research CentreAbstract : The choice between bare-rooted and containerized seedlings in southern Sweden affects the investment costs as well as growth and survival. It is important to take these differences into account when choosing seedling type for reforestation. READ MORE
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20. Produktivitet vid stubblyftning
University essay from SLU/Dept. of Forest Resource ManagementAbstract : Stump wood was used between 1850 and 1950 for production of tar and as firewood. In the 1950s the use decreased because of the introduction of the cheap fossil oil. In the 1970s stump wood became an interesting issue again as a raw material for the pulp industry. Stump lifting has today become a possible source for bioenergy. READ MORE