Effects of season and urea treatment on infection of stumps of <i>Picea abies</i> by <i>Heterobasidion annosum</i> in stands on former arable land

Brandtberg, P‐O.; Johansson, Martin; Seeger, Paul

doi:10.1080/02827589609382935

Cited by 68 publications

(63 citation statements)

References 21 publications

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“…Consequently, adequate measures and correctly chosen tree species and management approaches depending on a certain forest site may substantially decrease possible wood losses caused by Heterobasidion spp. according to experience from Sweden and Lithuania (Vollbrecht et al 1995;Brandtberg et al 1996;Daniel et al 1998;Vasiliauskas, Stenlid 1998b;Wang et al 2014). Nevertheless, another vision in forest management approaches and in intensification of forest operations should be considered.…”

Section: Resultsmentioning

confidence: 99%

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The potential impact of climate change and forest management practices on Heterobasidion spp. infection distribution in northwestern Russia - a case study in the Republic of Karelia

Trishkin¹,

Lopatin²,

Гаврилова³

2016

J. For. Sci.

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Heterobasidion spp. is considered as a major pathogen which causes butt and root rots and impairs the forest health. The increasing Earth's temperature could be favourable for Heterobasidion spp. in terms of the increased duration of dispersal period. The results of the field work showed that about 35% of visually observed stumps in the southern part of Karelia are rotten, although the laboratory analysis showed that 6% from the total number of observed stumps were infected by Heterobasidion spp. Moreover, there are evident long-term trends of increased average annual temperature and number of days per year with mean temperature above +5°C in the Republic of Karelia. It has positive effects on possible distribution of the pathogen and, consequently increased damage to the wood caused by Heterobasidion spp.

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Section: Resultsmentioning

confidence: 99%

“…The spores of Heterobasidion spp. penetrate into the Norway spruce fresh stumps (Rishbeth 1951) mainly, while the temperature is above 0°C (Brandtberg et al 1996). Thus, long-term changes in mean annual temperature as well as the mean number of days with positive temperature will make climatic conditions favourable for Heterobasidion spp.…”

Section: Discussionmentioning

confidence: 99%

The potential impact of climate change and forest management practices on Heterobasidion spp. infection distribution in northwestern Russia - a case study in the Republic of Karelia

Trishkin¹,

Lopatin²,

Гаврилова³

2016

J. For. Sci.

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“…Summertime loggings in Fennoscandia create fresh stumps susceptible to spore infection as the basidiospores are produced mainly during the summer months (Kallio, 1970;Brandtberg et al, 1996). Recent studies have shown that annual temperature sum cannot explain the spatial variation in the spore deposition (Kasanen et al, 2011;Witzell et al, 2011).…”

Section: Figurementioning

confidence: 99%

Integrating mechanistic disturbance models and stand dynamics of Norway spruce

Honkaniemi¹

2017

Diss. For.

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Disturbances, caused by abiotic and biotic agents, are discrete events in time disrupting the ecosystem and resulting in the reduction of plant biomass. They play a key role in forest ecosystems, but in the managed forests pose a risk to forest productivity. The projected climate change is expected to increase the risk of various disturbances in the boreal forests. In Europe, the major risks threatening the Norway spruce (Picea abies) dominated stands are caused by Heterobasidion root rot, wind storms, and European spruce bark beetle (Ips typographus). Heterobasidion root rot causes growth losses, mortality and decreases the timber quality. It also decreases the mechanical stability of the tree against wind load and increases the stand vulnerability for wind damages. Bark beetles benefit from the low resistance breeding material, i.e., wind damaged trees, when the population is low and can emerge as outbreaks in the right conditions. This thesis presents a simulation framework WINDROT to simulate the interactive dynamics of these disturbance agents. WINDROT consists of four simulation models, each responsible for either the dynamics of the host or one of the disturbance agents. A stand level decision support system, MOTTI, simulates the growth and dynamics of tree stands as affected by forest management, and provides inputs for mechanistic models Hmodel, HWIND and BBDYN simulating the dynamics and effects of disturbance agents. The model performance analyses in tree and stand scale showed that; i) the Heterobasidion dynamics are driven by primary and secondary infections on large stumps; ii) increasing intensity of Heterobasidion root rot damages increases the risk for wind damages; and iii) the increasing wind damages increased the subsequent bark beetle damages. The simulation framework can be used to analyze the sensitivity of different forest management regimes to the risks posed by these damages alone and in various combinations.

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“…Since treatment of stumps with biological or chemical agents has been successful in preventing spore infection of stump surfaces (Korhonen et al 1994, Pratt 1994, Brandtberg et al 1996 and subsequent development of root rot, treatment of stumps at clear-felling may reduce the risk of infection in subsequent rotations. However, clearfelling operations may cause mechanical damage to stump roots, i.e.…”

Section: Introductionmentioning

confidence: 99%

Logging operation damage to roots of clear-felled Picea abies and subsequent spore infection by Heterobasidion annosum

Rönnberg

2000

Silva Fenn.

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Two studies were carried out to examine the effects of clear-felling operations on stump roots of Norway spruce (Picea abies (L.) Karst.). In study I, the number of cases and the degree of damage to stump roots of Norway spruce were investigated on three clearfelled sites in northern and southern Sweden respectively. The cutting was done in winter or spring. A mean of 37 % of the stumps had signs of root damage caused by clear-felling operations. Study II was carried out on two sites in southern and two sites in northern Sweden. The trees were clear-felled in June or July. The frequency of natural infection by Heterobasidion annosum (Fr.) Bref. through damaged roots was compared to infection through stump surfaces. The total area of damage on roots was 88 % of the stump surface area. On average, 54 % of the stumps were infected through the stump surface and 19 % through locations of root damage. The root infections, however, were generally small in size as compared to stump surface infections. The study shows that damage to roots at clear-felling may be extensive, but this probably is not of great importance for the efficacy of stump treatment against H. annosum.

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Effects of season and urea treatment on infection of stumps of Picea abies by Heterobasidion annosum in stands on former arable land

Cited by 68 publications

References 21 publications

The potential impact of climate change and forest management practices on Heterobasidion spp. infection distribution in northwestern Russia - a case study in the Republic of Karelia

The potential impact of climate change and forest management practices on Heterobasidion spp. infection distribution in northwestern Russia - a case study in the Republic of Karelia

Integrating mechanistic disturbance models and stand dynamics of Norway spruce

Logging operation damage to roots of clear-felled Picea abies and subsequent spore infection by Heterobasidion annosum

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