<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Jönsson, U.</style></author><author><style face="normal" font="default" size="100%">Lundberg, L.</style></author><author><style face="normal" font="default" size="100%">Sonesson, K.</style></author><author><style face="normal" font="default" size="100%">T. Jung</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">First records of soilborne Phytophthora species in Swedish oak forests</style></title><secondary-title><style face="normal" font="default" size="100%">Forest Pathology</style></secondary-title><short-title><style face="normal" font="default" size="100%">Forest Pathol</style></short-title></titles><dates><year><style  face="normal" font="default" size="100%">2003</style></year><pub-dates><date><style  face="normal" font="default" size="100%">06/2003</style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">33</style></volume><pages><style face="normal" font="default" size="100%">175 - 179</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;Thirty-two oak stands in southern Sweden, 27 with predominantly declining trees and five with a higher proportion of healthy trees were investigated regarding the presence of soilborne &lt;em&gt;Phytophthora&lt;/em&gt; species. &lt;em&gt;Phytophthora quercina&lt;/em&gt;, an oak-specific fine root pathogen, was isolated from rhizosphere soil samples in 10 of the 27 declining stands. Additionally, &lt;em&gt;P. cactorum&lt;/em&gt; and &lt;em&gt;P. cambivora&lt;/em&gt; were recovered from one stand each. No &lt;em&gt;Phytophthora&lt;/em&gt; species were isolated from the healthy oak stands. The soil conditions at the sites from which &lt;em&gt;Phytophthora&lt;/em&gt; spp. were recovered ranged from mesic sediments to moraines, with clayey to silty textures and with soil pH (BaCl&lt;sub&gt;2&lt;/sub&gt;) between 3.5 and 5.0. The results show that &lt;em&gt;P. quercina&lt;/em&gt; is geographically widespread in oak stands in southern Sweden and indicate that this pathogen may be one of the factors involved in oak decline in Northern Europe as has already been shown for western, Central and parts of southern Europe.&lt;/p&gt;</style></abstract><issue><style face="normal" font="default" size="100%">3</style></issue></record></records></xml>