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Relationships between health of Quercus robur, occurrence of Phytophthora species and site conditions in southern Sweden

Jönsson Belyazid, Ulrika LU ; Jung, T; Sonesson, Kerstin LU and Rosengren, Ulrika LU (2005) In Plant Pathology 54(4). p.502-511
Abstract
The effect of Phytophthora species, soil chemistry, precipitation and temperature on the vitality of oak was evaluated in 32 oak stands in southern Sweden. In addition, the relationship between the occurrence of Phytophthora species and soil conditions was determined. The results showed that there was a weak association between the presence of P. quercina, the most frequently recovered Phytophthora species in southern Sweden, and the vitality of the oak stands (determined from estimates of crown defoliation of individual trees). The pathogens occurred more frequently in clayey and loamy soils that were less acidic and which had higher base saturation. However, they were found in all but the most acidic soils (pH < 3.5). In stands where... (More)
The effect of Phytophthora species, soil chemistry, precipitation and temperature on the vitality of oak was evaluated in 32 oak stands in southern Sweden. In addition, the relationship between the occurrence of Phytophthora species and soil conditions was determined. The results showed that there was a weak association between the presence of P. quercina, the most frequently recovered Phytophthora species in southern Sweden, and the vitality of the oak stands (determined from estimates of crown defoliation of individual trees). The pathogens occurred more frequently in clayey and loamy soils that were less acidic and which had higher base saturation. However, they were found in all but the most acidic soils (pH < 3.5). In stands where Phytophthora species were not present, positive correlations between the average crown defoliation and proportion of damaged trees with average summer precipitation and average annual precipitation were found. There were no significant differences in soil chemistry between healthy and declining stands included in this study, and no significant correlations were found between any soil parameter and crown vitality. Based on the results from these 32 oak stands, it is likely that the decline of oaks in southern Sweden can be attributed to several different site-specific factors, such as infection by P. quercina or unusual weather events, which interact with a number of biotic and abiotic factors, leading to oak decline. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
crown defoliation, oak decline, Phytophthora quercina, precipitation, soil chemistry, temperature
in
Plant Pathology
volume
54
issue
4
pages
502 - 511
publisher
Wiley-Blackwell
external identifiers
  • wos:000230728300009
  • scopus:27844542170
ISSN
1365-3059
DOI
10.1111/j.1365-3059.2005.01228.x
language
English
LU publication?
yes
id
ecdb0374-b604-4dbf-87b3-c6ea5e181052 (old id 147071)
date added to LUP
2007-07-02 11:20:10
date last changed
2017-04-09 03:43:56
@article{ecdb0374-b604-4dbf-87b3-c6ea5e181052,
  abstract     = {The effect of Phytophthora species, soil chemistry, precipitation and temperature on the vitality of oak was evaluated in 32 oak stands in southern Sweden. In addition, the relationship between the occurrence of Phytophthora species and soil conditions was determined. The results showed that there was a weak association between the presence of P. quercina, the most frequently recovered Phytophthora species in southern Sweden, and the vitality of the oak stands (determined from estimates of crown defoliation of individual trees). The pathogens occurred more frequently in clayey and loamy soils that were less acidic and which had higher base saturation. However, they were found in all but the most acidic soils (pH &lt; 3.5). In stands where Phytophthora species were not present, positive correlations between the average crown defoliation and proportion of damaged trees with average summer precipitation and average annual precipitation were found. There were no significant differences in soil chemistry between healthy and declining stands included in this study, and no significant correlations were found between any soil parameter and crown vitality. Based on the results from these 32 oak stands, it is likely that the decline of oaks in southern Sweden can be attributed to several different site-specific factors, such as infection by P. quercina or unusual weather events, which interact with a number of biotic and abiotic factors, leading to oak decline.},
  author       = {Jönsson Belyazid, Ulrika and Jung, T and Sonesson, Kerstin and Rosengren, Ulrika},
  issn         = {1365-3059},
  keyword      = {crown defoliation,oak decline,Phytophthora quercina,precipitation,soil chemistry,temperature},
  language     = {eng},
  number       = {4},
  pages        = {502--511},
  publisher    = {Wiley-Blackwell},
  series       = {Plant Pathology},
  title        = {Relationships between health of Quercus robur, occurrence of Phytophthora species and site conditions in southern Sweden},
  url          = {http://dx.doi.org/10.1111/j.1365-3059.2005.01228.x},
  volume       = {54},
  year         = {2005},
}