Heterobasidion root rot in Norway spruce
In spite of its biological and economic impact on Swedish forestry, root rot caused by Heterobasidion annosum (Fr.) Bref. sensu lato has received no or little attention in forest planning. This thesis summarizes and discusses two experiments involving prophylactic treatment of stumps, and three inve...
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ftslunivuppsala:oai:pub.epsilon.slu.se:729 2024-06-09T07:45:55+00:00 Heterobasidion root rot in Norway spruce Thor, Magnus 2005 application/pdf https://pub.epsilon.slu.se/729/ https://pub.epsilon.slu.se/729/1/Avh.nr.5_.pdf eng eng https://pub.epsilon.slu.se/729/1/Avh.nr.5_.pdf Thor, Magnus (2005). Heterobasidion root rot in Norway spruce. Diss. (sammanfattning/summary) Uppsala : Sveriges lantbruksuniv., Acta Universitatis Agriculturae Sueciae, 1652-6880 2005:5 ISBN 91-576-7004-8 [Doctoral thesis] Not in use please see Agris categories Doctoral thesis NonPeerReviewed 2005 ftslunivuppsala 2024-05-16T04:04:25Z In spite of its biological and economic impact on Swedish forestry, root rot caused by Heterobasidion annosum (Fr.) Bref. sensu lato has received no or little attention in forest planning. This thesis summarizes and discusses two experiments involving prophylactic treatment of stumps, and three investigations on the modelling and simulation of root rot in coniferous stands with special emphasis on Norway spruce (Picea abies [L.] Karst.). In 14 previously unthinned stands of Norway spruce, the efficacy of mechanized stump treatments with disodium octaborate tetrahydrate (DOT), Phlebiopsis gigantea (Fr.) Jül. and urea was compared with no treatment of stumps cut in the summer and winter, and with manual treatment. Stump treatment reduced the stump area colonized by H. annosum s. l. by 88-99% as compared with untreated stumps cut in the summer. In terms of colonized stump area, there were neither differences between compounds, nor between mechanized and manual treatments. Sensitivity of root rot antagonist P. gigantea spores to high temperature or pressure was tested in laboratory and field experiments using a mechanized application. The spores withstood 1,600-2,200 kPa for 24 h without losing viability. Spore germination of P. gigantea had an optimum at c. 30ºC. Mechanized application under normal summer conditions in Sweden did not obstruct spore germination of P. gigantea. Functions for predicting the probability of decay in individual trees were developed using logistic regression from data in the Swedish national forest inventory 1983-2001. The functions use data readily available in most stand records, and are recommended for strategic, tactical and operational planning. Models for simulation of disease development were developed based on known facts about the mode of infection and spread of H. annosum s. l. in Fennoscandian coniferous forests. The economic outcomes for a number of stands typical of Swedish forest management were modelled and predicted using the models for H. annosum s. l. dynamics and models ... Doctoral or Postdoctoral Thesis Fennoscandian Swedish University of Agricultural Sciences (SLU): Epsilon Open Archive Norway Stump ENVELOPE(-153.167,-153.167,-86.183,-86.183) The Stump ENVELOPE(-58.161,-58.161,-62.097,-62.097) |
institution |
Open Polar |
collection |
Swedish University of Agricultural Sciences (SLU): Epsilon Open Archive |
op_collection_id |
ftslunivuppsala |
language |
English |
topic |
Not in use please see Agris categories |
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Not in use please see Agris categories Thor, Magnus Heterobasidion root rot in Norway spruce |
topic_facet |
Not in use please see Agris categories |
description |
In spite of its biological and economic impact on Swedish forestry, root rot caused by Heterobasidion annosum (Fr.) Bref. sensu lato has received no or little attention in forest planning. This thesis summarizes and discusses two experiments involving prophylactic treatment of stumps, and three investigations on the modelling and simulation of root rot in coniferous stands with special emphasis on Norway spruce (Picea abies [L.] Karst.). In 14 previously unthinned stands of Norway spruce, the efficacy of mechanized stump treatments with disodium octaborate tetrahydrate (DOT), Phlebiopsis gigantea (Fr.) Jül. and urea was compared with no treatment of stumps cut in the summer and winter, and with manual treatment. Stump treatment reduced the stump area colonized by H. annosum s. l. by 88-99% as compared with untreated stumps cut in the summer. In terms of colonized stump area, there were neither differences between compounds, nor between mechanized and manual treatments. Sensitivity of root rot antagonist P. gigantea spores to high temperature or pressure was tested in laboratory and field experiments using a mechanized application. The spores withstood 1,600-2,200 kPa for 24 h without losing viability. Spore germination of P. gigantea had an optimum at c. 30ºC. Mechanized application under normal summer conditions in Sweden did not obstruct spore germination of P. gigantea. Functions for predicting the probability of decay in individual trees were developed using logistic regression from data in the Swedish national forest inventory 1983-2001. The functions use data readily available in most stand records, and are recommended for strategic, tactical and operational planning. Models for simulation of disease development were developed based on known facts about the mode of infection and spread of H. annosum s. l. in Fennoscandian coniferous forests. The economic outcomes for a number of stands typical of Swedish forest management were modelled and predicted using the models for H. annosum s. l. dynamics and models ... |
format |
Doctoral or Postdoctoral Thesis |
author |
Thor, Magnus |
author_facet |
Thor, Magnus |
author_sort |
Thor, Magnus |
title |
Heterobasidion root rot in Norway spruce |
title_short |
Heterobasidion root rot in Norway spruce |
title_full |
Heterobasidion root rot in Norway spruce |
title_fullStr |
Heterobasidion root rot in Norway spruce |
title_full_unstemmed |
Heterobasidion root rot in Norway spruce |
title_sort |
heterobasidion root rot in norway spruce |
publishDate |
2005 |
url |
https://pub.epsilon.slu.se/729/ https://pub.epsilon.slu.se/729/1/Avh.nr.5_.pdf |
long_lat |
ENVELOPE(-153.167,-153.167,-86.183,-86.183) ENVELOPE(-58.161,-58.161,-62.097,-62.097) |
geographic |
Norway Stump The Stump |
geographic_facet |
Norway Stump The Stump |
genre |
Fennoscandian |
genre_facet |
Fennoscandian |
op_relation |
https://pub.epsilon.slu.se/729/1/Avh.nr.5_.pdf Thor, Magnus (2005). Heterobasidion root rot in Norway spruce. Diss. (sammanfattning/summary) Uppsala : Sveriges lantbruksuniv., Acta Universitatis Agriculturae Sueciae, 1652-6880 2005:5 ISBN 91-576-7004-8 [Doctoral thesis] |
_version_ |
1801375580614033408 |