Sökning: "Sporspridning"

Hittade 3 uppsatser innehållade ordet Sporspridning.

1. 1. Är förekomst av knäckesjuka i tallföryngringar mindre på stora naturvårdsaspar än på aspsly?

   Magister-uppsats, SLU/Dept. of Forest Ecology and Management

   Författare :Maja Löfstrand; [2009]
   Nyckelord :Knäckesjuka; Melampsora pinitorqua; Sporspridning; Naturvårdsasp; Populus tremula; Uredosporer; Teleutosporer; Rostsvampar;

   Sammanfattning : Pine twisting rust (Melampsora pinitorqua) is a parasitic rust fungus found all across Sweden causing damage resulting in lower quality and reduced tree growth in pine stands. In Sweden, the fungus is dependent on two alternate hosts; European aspen (Populus tremula) and Scots pine (Pinus sylvestris). LÄS MER

3. 2. Karaktärisering av Gremmeniella-skadade bestånd inom Holmen Skog AB

   L3-uppsats, SLU/Dept. of Silviculture

   Författare :Alexandra Frank; [2005]
   Nyckelord :tillämpad skogspatologi; skadesvamp; Gremmeniella; ståndort; bestånd; gallring; skogsskötsel; praktiskt skogsbruk; monokultur; altitud;

   Sammanfattning : Since the end of the eighteenth century forest damage caused by the pathogen Gremmeniella abietina has been observed and documented. During the latest epidemic in Sweden more than 480 000 hectares forest land have been injured and this has lead to considerable economic losses. LÄS MER

4. 3. Presence of Heterobasidion annosum and the need for stump treatment in monocultures of Scots pine in southern Sweden

   L3-uppsats, SLU/Southern Swedish Forest Research Centre

   Författare :Eglė Petrylaitė; [2004]
   Nyckelord :heterobasidion annosum; stump treatment; monocultures of Scots pine; pinus sylvestris L.;

   Sammanfattning : The incidence of Heterobasidion spp. in the roots of Scots pine (Pinus sylvestris L.) was investigated in fifteen monocultures of Scots pine in southern Sweden. On the basis of crown condition, all trees were divided into four classes from healthy to dead trees on a number of sample plots at each site. LÄS MER