Presence of Heterobasidion annosum and the need for stump treatment in monocultures of Scots pine in southern Sweden
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...
| Autor principal: | |
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| Formato: | L3 |
| Lenguaje: | Inglés sueco |
| Publicado: |
SLU/Southern Swedish Forest Research Centre
2004
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| Materias: |
| _version_ | 1855571847517569024 |
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| author | Petrylaitė, Eglė |
| author_browse | Petrylaitė, Eglė |
| author_facet | Petrylaitė, Eglė |
| author_sort | Petrylaitė, Eglė |
| collection | Epsilon Archive for Student Projects |
| description | 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. The root systems were excavated and
sample discs were taken from two healthy looking trees and two defoliated trees in
each stand. All samples were analysed for the presence of Heterobasidion spp. The
data was used to create a probability model for trees getting infected. Estimated
volume losses were then compared to the costs for treating stumps.
Heterobasidion spp. was found in root samples from pines at fourteen of the fifteen
stands. A total of 44 of the 60 sampled trees were infected by Heterobasidion spp. in
the root systems. Of the infected pines 20 trees were assessed as healthy looking and
24 as defoliated trees. Previous land use, thinning season and crown condition class
had significant effects on the percentage of root discs infected by Heterobasidion spp.
Accordingly, highest probability of finding an infected tree was among the defoliated
trees in stands on former agricultural land with thinnings carried out during season of
spore spread.
The results show that at three percent interest rate stump treatment to prevent spore
infection of Heterobasidion spp. in monocultures of Scots pine in southern Sweden is
clearly beneficial, especially in stands established on former arable land. |
| format | L3 |
| id | RepoSLU11306 |
| institution | Swedish University of Agricultural Sciences |
| language | Inglés swe |
| publishDate | 2004 |
| publishDateSort | 2004 |
| publisher | SLU/Southern Swedish Forest Research Centre |
| publisherStr | SLU/Southern Swedish Forest Research Centre |
| record_format | eprints |
| spelling | RepoSLU113062017-10-10T11:15:44Z Presence of Heterobasidion annosum and the need for stump treatment in monocultures of Scots pine in southern Sweden Förekomst av rotticka och behovet av stubbehandling i monokulturer av tall i södra Sverige Petrylaitė, Eglė heterobasidion annosum stump treatment monocultures of Scots pine pinus sylvestris L. 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. The root systems were excavated and sample discs were taken from two healthy looking trees and two defoliated trees in each stand. All samples were analysed for the presence of Heterobasidion spp. The data was used to create a probability model for trees getting infected. Estimated volume losses were then compared to the costs for treating stumps. Heterobasidion spp. was found in root samples from pines at fourteen of the fifteen stands. A total of 44 of the 60 sampled trees were infected by Heterobasidion spp. in the root systems. Of the infected pines 20 trees were assessed as healthy looking and 24 as defoliated trees. Previous land use, thinning season and crown condition class had significant effects on the percentage of root discs infected by Heterobasidion spp. Accordingly, highest probability of finding an infected tree was among the defoliated trees in stands on former agricultural land with thinnings carried out during season of spore spread. The results show that at three percent interest rate stump treatment to prevent spore infection of Heterobasidion spp. in monocultures of Scots pine in southern Sweden is clearly beneficial, especially in stands established on former arable land. Förekomsten av rotticka (Heterobasidion spp.) i rötterna av tall (Pinus sylvestris L.) undersöktes i 15 tallmonokulturer på sandig mark i södra Sverige. Baserat på kronutglesningen delades alla träd in i fyra klasser, från friska till döda, på ett antal provytor i varje bestånd. På två till utseendet friska respektive kronutglesade individer i varje bestånd grävdes rotsystemen fram och prover togs. Döda träd provtogs ej. Alla prover analyserades med avseende på förekomsten av rotticka. Det erhållna materialet användes sedan för att skapa en modell för att prediktera sannolikheten att ett träd i ett bestånd var infekterat av rotticka. Estimerade volymsförluster till följd av angrepp av rottickan jämfördes sedan med kostnaden för en stubbehandling vid gallring. Rotticka återfanns i 14 av 15 undersökta bestånd. I 44 av totalt 60 fall hade provtagna tallar infektion av rottickan i någon rot. Av de undersökta tallarna var 20 visuellt bedömda som friska och 24 som kronutglesade. Tidigare markanvändning, säsong för gallring och kronutglesningsklass hade en signifikant effekt på frekvensen infekterade rotprover. Följaktligen var risken störst att stöta på ett infekterat träd bland de kronutglesade tallarna i bestånd på tidigare åkermark med gallringar utförda under tiden för rottickans sporspridning. Vid en treprocentig internränta visar resultatet av denna studie att stubbehandling för att undvika sporinfektioner av rotticka i monokulturer av tall i södra Sverige är klart lönsam, speciellt i bestånd etablerade på tidigare jordbruksmark. SLU/Southern Swedish Forest Research Centre 2004 L3 eng swe https://stud.epsilon.slu.se/11306/ |
| spellingShingle | heterobasidion annosum stump treatment monocultures of Scots pine pinus sylvestris L. Petrylaitė, Eglė Presence of Heterobasidion annosum and the need for stump treatment in monocultures of Scots pine in southern Sweden |
| title | Presence of Heterobasidion annosum and the need for stump treatment in monocultures of Scots pine in southern Sweden |
| title_full | Presence of Heterobasidion annosum and the need for stump treatment in monocultures of Scots pine in southern Sweden |
| title_fullStr | Presence of Heterobasidion annosum and the need for stump treatment in monocultures of Scots pine in southern Sweden |
| title_full_unstemmed | Presence of Heterobasidion annosum and the need for stump treatment in monocultures of Scots pine in southern Sweden |
| title_short | Presence of Heterobasidion annosum and the need for stump treatment in monocultures of Scots pine in southern Sweden |
| title_sort | presence of heterobasidion annosum and the need for stump treatment in monocultures of scots pine in southern sweden |
| topic | heterobasidion annosum stump treatment monocultures of Scots pine pinus sylvestris L. |